1970

VICTORIA

STATE ELECTRICITY COMMISSION OF VICTORIA

FIFTY-FIRST ANNUAL REPORT

FOR THE

FINANCIAL YEAR ENDED 30TH JUNE, 1970

TOGETHER WITH

APPENDICES

PRESENTED TO PARLIAMENT PURSUANT TO SECTION 82 (b) OF STATE ELECTRICITY COMMISSION ACT No. 6377.

By Authoniy: C. H. RIXON, GOVERNMENT PRINTER, MELBOURNE.

No. 16.-10923/70.-60 cents.

FIFTY-FIRST ANNUAL REPORT 1969-70

Chairman and General Manager W. H. Connolly, C.B.E .• D.Eng.(Hon.), B.E.E., B.Com., F.I.E.Aust., M.I.E.E.E.(U.S.A.), Hon. M.Aus.I.M.M.

Commissioners T.P.Scott, F.A.I.I. B. J. Callinan, D.S.O., M.C., B.C.E., F.I.C.E., F.I.E.Aust., F.A.P.I. C. R. Darvall, C.B.E., F.A.S.A.

Deputy General Manager N. R. White, M.E., F.I.E.Aust.

Assistant General Manager {Administration) J. C. Trethowan, B.Com., A.A.S.A.

Assistant General Manager (Generation and Transmission) G. Paterson, B.C.E., F.I.E.Aust., A.M.A.S.C.E.

Assistant General Manager (Marketing and Distribution) R. G. Chapman, B.C.E., M.I.E.Aust., M.I.C.E.

Secretary F. P. Chipperfield, B.Com., J.P.

Head Office 15 William Street, Melbourne, 3000

Contents

Page Summary of the Year's Activities 4 Financial Review 10 Revenue Account 15 Balance Sheet 16 Future Generating Capacity 18 Some Matters of Special Interest Preserving the Environment 20 Future of Yallourn Township 21 Metropolitan Municipal Electricity Distribution Systems 22 Review of Major Activities Marketing and Distribution 23 Construction 29 Electricity Production 30 Brown Coal Production 31 Briquette Production and Sales 32 Tramways- Ballarat and Bendigo 33 Public Safety and other Regulatory Responsibilities 34 Commissioners 36 Personnel and Organisation 37

STATISTICS

Page Record of Ten Years' Progress 42 Ten Years of Financial Statistics 44 Revenue Account Supplementary Information 46 Balance Sheet Supplementary Information 48 Electricity Consumer Statistics 51 Electricity Sales and Income 52 Electricity- Generation and Disposition 52 Generators and Boilers Installed 53 Generation of Electricity 56 Load Factors and Fuel Used 58 Transmission and Distribution Systems 60 Brown Coal and Briquette Production 62 Electricity Supply Undertakings {Municipal and Private) 64 Summary of Consumers and Sales- State of Victoria 64 Statistical Summary- State of Victoria 65 Schedule of Standard Tariffs 66 Map- Victorian Electricity Supply System Back Cover

3 Summary of Activities

FINANCIAL 1969/70 1968/69 $ $ Total income 225,702,301 216,683,053 Balance of income used for capital works 2,939,939 3,199,849

Fixed assets at 30th June cost 1,350,264,705 1 ,270,639,649 less depreciation 368,232,044 329,161 '724

$982 032,661 $941,477,925

ELECTRICITY PRODUCTION AND SALES

Maximum coincident demand (1970 winter compared with 1969 winter) MW 2,536 2,387 (23/6/70) (22/7/69)

Electricity generated (incl. purchases)* GWh 13,454.5 12,867.7 Electricity sales (incl. exports)t GWh 11,070.1 10,554.4

Number of consumers (excl. bulk supplies) at 30th June 1,014,572 981,535

Average consumption per domestic consumer kWh 3,850 3,750 per head of population (Victoria) kWh 3,043 2,911

• Includes energy from Snowy Mountains scheme and interchange from New South Wales. t Includes sales to Snowy Mountains scheme and interchange to New South Wales. :j: GWh (gigawatt-hour) =1,000,000 kWh (kilowatt-hours).

4 Fifty-first Annual Report FOR THE YEAR ENDED 30TH JUNE. 1970

The Hon. J. C. M. Balfour, M.L.A., Minister for Fuel and Power, MELBOURNE.

Sir, In conformity with the provisions of Section 82(b) of the State Electricity Commission Act No. 6377, we have the honour to present the 51st Annual Report of the Commission covering the financial year ended 30th June, 1970, together with balance sheet and revenue account. The following is a summary of the main features of the year's activities:

Results for the Year The year's financial results again were satisfactory; income was $225.7m and expenditure and special provisions were $222.8m leaving a balance of income of $2.9m which was used for capital works. In spite of an increasingly competitive market electricity sales increased by 6.8% over the previous year compared with 5.9% in 1968/69. A more selective approach to marketing and sales promotion is being adopted with the aim of restoring the annual increase in sales to the long term average of 8%. To help achieve this objective, selective reductions were made in electricity tariffs to promote load growth in a manner which will improve the system load factor and so obtain a greater efficiency of operation. There was an increase of 33,037 in the number of consumers connected to the system compared with an increase of 37,101 for the previous year. Electricity supply has been extended almost throughout the State and there are now only a few remote areas not served by the distribution system. More than 97% of farms are connected to supply. Brown coal production reached a record of 22.8 million tons. Now that the Hazelwood Power Station is approaching completion the annual output from Morwell open cut for the first time exceeded that from Yallourn open cut. Briquette sales to industrial and domestic customers reached a record of 1.1 million tons helping to offset the loss in sales through the closure in November, 1969, of the Gas and Fuel Corporation's gasification plant at Morwell.

Major Capital Works The construction program to meet future load growth is proceeding satisfactorily despite delays at the Yallourn 'W' Power Station caused by industrial disputes and late delivery of steelwork. The construction program for the station has been revised in an endeavour to have the two 350 megawatt generating sets in service in 1972 and 1973 as previously planned. The seventh 200 megawatt generating set was placed in service at Hazelwood Power Station. The eighth unit to complete the station to its approved capacity of 1,600 megawatts will be completed within the next few months. Extension and augmentation of the State transmission and distribution system is continuing, including construction of a second 500 kV transmission line from the Latrobe Valley to Melbourne.

5 During the year detailed investigations were made into the alternatives available for the next major power generation project to follow Yallourn 'W'. A decision ELECTRICITY PRICE TREND IN VICTORIA will need to be made soon on the type of power station to be constructed to

Base year t 95Y -60 100 meet growth in peak load requirements after 1975. The Commission will submit a separate recommendation to you in this regard. 180 Industrial Relations / 170 V/ Like many other large employers, the Commission suffered a high level of I I 160 industrial unrest during the year. On occasions electricity supply to the public was disrupted and this is viewed most seriously. 1£/ 150 Employees' Retirement and Benefit Fund Y/' 140 // The Commission was pleased that it was able to introduce as from 1st May, / le' 130 1970, a retirement and benefit fund for employees working under awards or ;;/ V determinations. it had felt for some time that such a fund was desirable. (There V 120 has been a staff provident fund since 1930.} The fund is on a voluntary basis and [/. ....-....- contributions by employees are supplemented by the Commission paying ~ V 110 / --"" V into the fund one and a half times the employees' contributions. As a result ~ 100 substantial benefits are available upon retirement or in the event of earlier death I'~ - or disability. - 90 This move received the wholehearted endorsement of employees- over 94% of 1960 '6 1 '62 '63 '64 '65 '66 '67 '68 '69 '70 those eligible already have joined. S.E.C. average sa tary/wage per week Tariffs Average weekly earnings per employed male unit (Victoria) A new tariff introduced on 1st January, 1970, results in savings for domestic consumers who qualify by having an electric range, hot water service and Consumer pr1ce index (Melbourn e) refrigerator. By encouraging the use of these appliances a more balanced growth Average price of electric it y of domestic loading will result. per kWh- all suppli es Also tariffs for industrial consumers using large quantities of electricity were reduced to assist in promoting industrial development in Victoria. The Commission was pleased to introduce these tariff reductions at a time of strong inflationary pressures. They reflect the very significant economies being effected even during a period of rapid growth.

Trends in Wages and Prices The average price paid for all supplies of electricity has remained substantially constant over the past decade, as shown in the graph alongside. This is in marked contrast to the steady rise in the Consumer Price Index and a steep rise in average weekly earnings. The application of the special tariff reductions introduced in January, 1970, over a full twelve months together with the increasing use of electricity by consumers in the lower blocks in the tariffs will reduce the average price during the forthcoming year. Forecasts of the Commission's future costs and financial position, assuming a continuation of past cost trends, indicate that further tariff reductions may be possible during the next three years. Such reductions would be made as the opportunity arises, in accordance with the Commission 's objective of supplying the electricity needs of the people of the State at the lowest practical price.

6 lt will be noted that the average weekly earnings of Commission employees exceeds the average for Victoria. The cost of salaries, wages, employees' benefits and payroll tax is 33% of the Commission's income. That electricity prices have been held constant despite rapid increases in rates of pay and other costs is a clear indication of the extent to which the efficiency of operations has been improved.

Expo Electric As reported last year representatives of the electrical industry from other States and Europe, North America and Japan joined in the Commission's Golden Jubilee celebrations by participating in Expo Electric '69 during October last year. With the theme "Tomorrow is Electric" Expo Electric demonstrated the many applications of electricity, the technological advances of recent years, and previewed some of the foreseeable benefits which progress in electrical and electronic technology will bring. More than 150,000 people attended Expo Electric establishing a record for a ten-day function at the Exhibition Buildings.

In the following pages the activities of the Commission during the year, and its future plans, are presented in detail. They have required a high sense of responsibility by personnel throughout the service. The Commission has pleasure in placing on record its sincere appreciation of the efforts of those personnel who have loyally accepted the heavy responsibilities placed upon them.

We have the honour, Sir, to present this Report. W. H. CONNOLL V, Chairman. T. P. SCOTT, Commissioner. B. J. CALLINAN, Commissioner. C. R. DARVALL, Commissioner.

F. P. Chipperfield, Secretary. 22nd October, 1970.

7 Yallourn 'W' Power Station (two 350 MW turbo-generator sets) under construction. At right is the base for one of the two 375 lt. high natural draught cooling towers, at left the base for the chimney which will serve both boilers.

The recently completed No. 11 bucket wheel dredger (capacity 1,750 tons of coal per hour) in operation in the Morwe/1 Open Cut.

8 Above: The char manufacturing plant of Australian Char Pty. Ltd. - the Commission holds 5 per cent of the shares of this company. When in full production the plant will use approximately 140,000 tons of briquettes per annum.

At right: Battery powered fork lift vehicle in use in ship's hold. Considerable research is being carried out overseas into the development of battery driven vehicles, including cars. Overnight charging of batteries could provide a substantial market for electricity during off-peak hours.

9 State Electricity Commission of Victoria REPORT FOR THE YEAR ENDED 30th JUNE, 1970

Financial Review

INCOME

Oomeslic oloctricity ...______29°/o 1

lnd uS!rml electricity '------'1 26%, The operating result again was satisfactory, even after some reductions in BulK £aupplles electn clly '------l 21 % tariffs during the year. The balance of income used for capital works was $2,939,939 ($3, 199,849 last year) after meeting $50,771,909 interest plus $871 ,000 loan flotation expense and providing $53,966,233 for depreciation and Subs1 d ~r y briQue le. b rown co ~JI. u am \·.fays $8,000,000 for accruing long service leave and retiring allowances. Income for the year was $225,702,301 and expenditure and special provisions were $222,762,362. The amounts provided for depreciation and accruing long service leave and retiring allowances, plus the balance of income, constitute a necessary source of internal funds for meeting a reasonable proportion of capital expenditure. EXPENDITURE The Commission has been successful in its efforts to offset rising costs by 1------~- Salanes. wages. 339 • employees· benehts improving the efficiency of its operations, and this has assisted considerably in & payroH ta x meeting additional expenditure on salaries, wages, employees' benefits and 24°o l~-----..1 Oeprectal ton payroll tax arising from the substantial improvements in rates of pay and benefits. 1------..., Interest ~m d loan 23oo flo lalion expen::;e The average salary and wage payment per employee increased by more than 22 per cent over the last three years to $79.28 a week. During the year the Australian Loan Council twice increased the rates of interest payable on new loans to the Commission -by 0.6 per centage point per annum in July, 1969, and a further 1.0 percentage point per annum in May, 1970 -and the interest rates on new loans now range from 7.0 to 7.4 per cent. These increases had no substantial impact in 1969/70, but if these rates continue the annual interest bill will increase by a cumulative $1.5m each year. During 1969/70 selective reductions in tariffs were made to encourage the greater use of electricity with the aim of restoring the annual growth of sales in Victoria to the long term average of about 8 per cent. This year the increase in sales was 6.8 per cent. In all, tariff reductions representing about $5m per annum in a full year (based on present electricity consumption) were introduced, with a $2m reduction in income in the year under review. The Commission is faced with a difficult problem in ensuring in a competitive market that tariffs individually will encourage a greater use of electricity and at the same time that the overall income is sufficient to provide an adequate return on capital investment. A rate of return of about 12 per cent on fixed assets investment at the end of the year is needed to meet the annual cost of loan moneys and to finance internally that proportion of the

10 capital works program which is beyond the capacity of the loan market. In the year under review the rate earned was 11.9 per cent compared with 11 .3 per cent VICTORIAN ELECTRICITY SALES 1945-1970 in 1968/69, calculated as follows: GWh 1969/70 1968/69 $m $m Return Interest (including loan flotation expense) 51.6 48.5 Depreciation provision 54.0 49.0 Provision for accruing long service leave and retiring allowances 8.0 6.0 Balance of income used for capital works 2.9 3.2

116.5 106.7

Fixed Assets Investment Gross cost at 30th June 1,350.2 1,270.6 Less provision for depreciation 368.2 329.1

Net investment 982.0 941.5

Rate of return on net investment 11 .9% 11.3%

Income 1945 1950 1955 1960 1965 1970 Operating income from all sources increased by $9.02m (4.2%) to $225.7m. Electricity income increased by $10.09m (after the decrease of $2m resulting from the selective tariff reductions), but income from briquettes and brown coal decreased by $1 .07m.

Electricity Sales Annual Growth 1969/70 1968/69 1969/70 1968/69 GWh GWh % % 3,214 3,014 Domestic supplies 6.6 11.9 999 935 Commercial supplies 6.9 12.6 3,461 3,189 Industrial supplies 8.5 - 1.0* 232 231 Traction supplies 0.4 -5.3 59 55 Public lighting supplies 7.5 5.8 2,598 2,470 Bulk supplies 5.1 7.4 10,563 9,894 Total Victorian sales 6.8 5.9*

These figures were affected by the supply to the smelter of Alcoa of Australia Pty. Ltd. being transferred progressively over the second half of 1968/69 to the company's power station at Anglesea. Excluding Alcoa, industrial and total sales would have increased by 5.6% and 8.4% respectively.

Electricity supplied in bulk to the eleven metropolitan municipal undertakings increased by 5.1%. Sales by these authorities increased by 3.6% to domestic, 8.6% to commercial and 2.9% to industrial consumers. Despite a reduction of 143,000 tons in briquette sales to the Gas and Fuel Corporation following closure of the Lurgi gasification plant at Morwell in November, 1969, briquette sales were satisfactory. Domestic sales dropped by 20,000 tons but sales to industrial and commercial users increased by 40,000 tons to a record level.

11 Briquette Sales 1969/70 1968/69 Variation Tons 000 Tons 000 Tons 000 % Domestic users 523 543 - 20 3.7 Industrial and commercial users 605 565 + 40 + 7.2 Gas and Fuel Corporation 83 226 -143 -63.5

Total (excluding consumption in power stations) 1,211 1,334 -123 9.2

Brown coal sales also were reduced by 13.5% with the closure of the gas plant at Morwell.

Expenditure Expenditure increased by $9.3m or 4.4% to $222.8m.

1969/70 1968/69 Variation $m $m $m % Salaries, wages, employees' benefits and payroll tax 73.4 72.2 +1.2 + 1.7 Interest and loan flotation expense 51.6 48.5 +3.1 + 6.5 Depreciation 54.0 49.0 +5.0 +10.2 Purchased electricity, materials, services and miscellaneous expenditure 28.6 30.8 -2.2 7.1 Provision for accruing long service leave and retiring allowances 8.0 6.0 +2.0 +33.3 Statutory transfers to Consolidated Revenue of Victoria 7.2 7.0 -+-0.2 + 3.1

222.8 213.5 +9.3 + 4.4

The average salary and wage payment per employee over the year increased by 5% but there was a 3% reduction in the number of personnel so that salaries, wages, employees' benefits and payroll tax increased overall by 1.7%. The 10.2% increase in depreciation provides for re-assessed lives tor distribution lines. Depreciation lives of all fixed assets are reviewed periodically to ensure that they are on a sound basis. Payments to Commonwealth, State and municipal funds in the form of payroll tax, statutory transfers to Victoria's Consolidated Revenue, and contributions to municipalities amounted to $9.5m for the year, which is 4.2% of income.

12 Capital Expenditure Expenditure on capital works during the year was $97.1 m compared with NEW CAPITAL EXPENDITURE 1960-1970 $103.7m in 1968/69. 1969/70 1968/69 $(millions) $m $m Power stations 31.4 40.3 120 Transmission 30.4 26.8 Distribution 26.6 26.8 Coal production 4.3 4.9 100 Other works and equipment 4.4 4.9

97.1 103.7 80

With the 1600 MW Hazelwood Power Station nearing completion expenditure .,.:::; ~ 60 I-- - on this station fell to $19.1 m compared with $36.3m in the previous year. ~ Expenditure on Yallourn 'W' Power Station increased from $3.7m to $12.2m, _, ::::: 1--~ 40 although progress by the contractors was retarded by industrial disputes. $4.75m - / was expended on the 500 kV transmission lines from the Latrobe Valley to ,. -- Melbourne compared with $2.9m in 1968/69. 20 At 30th June, 1970, the cost of the Commission's fixed assets, after deduction of $368.2m accumulated depreciation provision, was $982.0m compared with 0 $941.5f!! at the beginning of the year. 1960 '61 '62 '63 '64 '65 '66 '67 '68 '69 '70

Capital Finance Thermal power stations • Briquette production The Commission was authorised to borrow $74.5m comprising $45.4m for renewal of maturing loans and $29.1 m for new works compared with $51.7m Hydro-electric Transmission and • developments distribution systems and $25.5m, respectively, last year. This amount was raised in full through General equipment, private offers of $38.7m and four public loans totalling $35.8m. D Coal production • workshops, stores Loan transactions for each of the last five years were: Total Cash Conversions Raisings Redemptions $m $m $m $m 1965/66 47.3 13.1 60.4 20.3 1966/67 42.9 16.7 59.6 14.9 1967/68 43.2 24.0 67.2 17.6 1968/69 49.7 27.5 77.2 24.2 1969/70 46.6 27.9 74.5 17.5 Finance available for capital works and loan redemptions was $10m in excess of expenditure. Over half of this excess was occasioned by the delays in progress on the Yallourn 'W' Power Station contracts. Also, some of the loan authority for new works was allotted to the Commission late in the year on the understanding that it will be used in 1970/71. The deferred Yallourn 'W' expenditure will increase the works program of the next two years as the first of the two sets is scheduled for operation in the autumn of 1972.

13 The excess finance of the last two years ($14.2m) has almost recouped the $16.7m reduction in the Commission's liquid reserves over the preceding two years. 1969/70 1968/69 1967/68 1966/67 $m $m $m $m Capital Expenditure Capital works 97.1 103.7 102.9 99.3 Loan redemptions 17.5 24.2 17.6 14.9 114.6 127.9 120.5 114.2

Finance SEC loan raisings 46.6 49.7 43.2 42.9 State Government loans 15.0 17.0 17.0 16.0 "Self-help" extension deposits and miscellaneous capital contribu- tions and advances 13.6 16.4 14.1 14.4 Internal funds 49.4 49.0 35.1 35.3 124.6 132.1 109.4 108.6

Shortages 11.1 5.6 Excesses 10.0 4.2

14 Revenue Account FOR YEAR ENDED 30th JUNE. 19/C

Last Year INCOME $ $ $ Electricity sales Domestic 66,704,775 63,023,866 Commercial and general 32,976,404 31,014,391 Industrial 58,978,152 55.606,400 Bulk supplies 46,529,227 45,571,587 Traction 3,705,368 3,690,623 Public lighting 2,529,365 2,351,480 Increase in unread consumption 1,056,541 1.135,519 ----- 212,4 79,832 202,393,866 Briquette sales 12,286,508 13,252,820 Brown coal sales 673,767 770,792 Tramways income 262,194 265,575

225,702,301 216.683,053

OPERATING EXPENDITURE Operation and maintenance {incl. fuel) 70,741,769 73,796,906 Depreciation 48,106,447 42,958,631 Administration and general expenses 20,433,976 18.718,943 Employees' service benefits, accommodation and general services 10,149,993 9,944,375

149,432,185 145,418,855

76,270,116 71,264,198

FINANCE CHARGES AND SPECIAL PROVISIONS

Interest 50,771,909 47,961,509 Loan flotation expense 871,000 545,500 Miscellaneous expenditure 627,758 575.696 Additional depreciation of briquette factories and depots 5,859,786 6.000.000 Provision for accruing long service leave and retiring allowances 8,000,000 6.000.000 Provision for transfers to Consolidated Revenue of Victoria- On gross income 6,600,000 6,300,000 Under provision in 1968/69 30,000 120,000 On brown coal production 569,724 561,644

73,330,177 68,064,349

BALANCE OF INCOME USED FOR CAPITAL WORKS $2,939,939 $3,199,849

NOTE: Additional information on the Revenue Account is provided on pages 46 and 47.

15 Balance Sheet AS AT 30th JUNE. 1970

Last Year CURRENT ASSETS $ $ $ Balances at bank and cash in hand 691,728 819,879 Consumers' and other accounts receivable 18,897,098 18,072,179 Estimated income from unread electricity consumption 16,782,426 15,725.885 Materials and fuel at cost 14,465,187 12.570.658 Miscellaneous deferred charges 188,285 247.046

51,024,724 47.435,647

INVESTMENTS (incl. loan redemption and "self-help") at cost 60,672,161 48,436,475

LONG TERM DEBTORS (real estate sales) 4,383,900 4,119,978 FIXED ASSETS Assets in service at cost 1 ,281 ,486,681 1 '192,887.800 Deduct: Provision for depreciation 368,232,044 329,161,724

913,254,637 863,726,076 Assets not yet in service- at cost 55,409,943 64.031,958 Development of open cuts balance of cost 13,368,081 13,719,891

982,032,661 941.477,925

$1,098,113,446 $1.041,470,025

J. L. PEPPERELL, Chief Finance Officer.

NOTE: Additional information on the Balance Sheet is provided on pages 48-50.

16 Last Year CURRENT LIABILITIES $ $ $ Bank overdraft 217,900 470,861 Accounts payable and miscellaneous accruals 14,405,551 14,619,329 Interest accrued 11,090,891 10,363,543 Provision for transfers to State Revenue 7,169,724 6,861,644 Consumers' and contractors' deposits 1,351,458 1,047,088

34,235,524 33,362,465

DEFERRED LIABILITIES Consumers' and other advances for capital works 51,168,133 53,118,707 Advances from Provident Fund 42,296,279 36,896.527 Acquisition loans from Municipalities 3,237,608 3,453,097 Provision for long service leave and retiring allowances 14,000,000 6,000,000

110,702,020 99,468,331

RESERVES General reserve 32,588,305 29,127,152 Consumers' and other contributions for capital works 9,162,666 8,206,836

41,750,971 37,333,988

CAPITAL LIABILITIES Inscribed stock and debentures 660,326,558 633,008,917 Victorian Government advances 251 ,098,373 238,296,324

911,424,931 871 ,305,241

$1,098,113,446 $1,041,470,025

W. H. CONNOLL Y, Chairman.

Auditor-General's Certificate The accounts of the Slate Electricity Commission of Victoria have been audited for the year ended 30th June, 1970. For the purpose of the audit, appraisals and examinations carried out by the Commission's Internal Auditor have been accepted. In my opinion, the above Balance Sheet presents a true and fair view of the affairs of the undertaking at 30th June, 1970, and the Revenue Account properly summarises the operations of the Commission for the year. A. J. A. GARDNER, Auditor-General. 20th October, 1970

17 Future Generating Capacity

Plant Program to 1975

Estimated Planned Capacity Additions Corrected Reserve Maximum Calendar Less Over-age or Derated Plant Capacity Winter Year Plant Capacity Expected Demand (MW) (MW) (MW) (MW)

1971 2,833 Hazelwood 8 200 3,568 735 Snowy (increased (25.9%) Commonwealth reservation) -7 Yallourn B (over-age) -17 Yallourn Briquette Factory generating plant (over-age) -12

164

1972 3,036 Yallourn W1 350 4,031 995 Snowy (Tumut 3) 131 (32.8%) Yallourn B (over-age) -18

463

1973 3,253 Snowy (Tumut 3) 148 4,179 926 (28.5%)

1974 3,487 Yallourn W2 350 4,676 1,189 Snowy (Tumut 3) 147 (34.1%)

497

1975 3,742 Snowy (cessation 4,675 933 of construction) 5 (24.9°/o) Spencer Street (over-age) -6

-1

NOTES 1. This program assumes that thermal plant will not be available after 40 years of service; however these over-age units are not necessarily taken out of service at that time. 2. Corrected plant capacity is the manufacturer's maximum continuous rating of generator sets less an allowance imposed by shortage of essential elements such as boiler capacity, circulating water (steam sets), or water (hydro sets).

The expanded demand on the State generating system to 1975 will be met by completion of the Hazelwood Power Station, the 700 MW Yallourn 'W' Power Station now under construction, together with entitlements from the 1500 MW Tumut 3 stage of the Snowy Mountains hydro-electric scheme.

18 System studies indicate that brown coal fired power stations at Hazelwood, Yallourn and Morwell will be adequate to meet increases in base load energy unti11979 or 1980 but additional generating plant will be required after 1975 to meet increased peak and intermediate load requirements. In the absence of further water resources which could be economically utilised, plant fired by natural gas or oil located close to the metropolitan area -the main load centre- would be the most suitable for this purpose. Such plant would permit a high degree of operating flexibility, and provide an energy reserve capable of meeting contingencies. However, before a decision can be made a number of important matters have yet to be resolved including the likely cost of alternative fuels and the appropriate capacity of generating units to be installed. A separate report will be submitted on this subject. For base load requirements after 1979 or 1980 plant fuelled by brown coal, oil or gas and nuclear plant are under consideration. In the past, brown coal fuelled plant has provided the base load capacity for the State system and a high level of expertise in the design and operation of this type of plant has been gained by the Commission and its principal contractors. The brown coal reserves in the Latrobe Valley have been extensively investigated and analysed, and there is sufficient coal available at a competitive cost to support some 20,000 MW of generating plant over a 40-year life. The discovery of natural gas and oil resources in Victoria could provide the opportunity to use these fuels for power generation, but there is no certainty that either will be available locally in sufficient quantities and at an economical price to allow their use to meet future base load requirements. Commercial nuclear plants are in operation in other parts of the world and many are under construction. Although these are mainly in countries where conventional fuel costs are higher than in Victoria, there are indications that for units over 500 MW nuclear power could be a serious competitor for future developments. During the next few years many more nuclear plants will be coming into service and it will be possible to draw upon a considerable amount of operating experience. In addition the Jervis Bay project of the Australian Atomic Energy Commission is providing opportunities for the assessment of nuclear power potential in Australia. Two senior engineers of the Commission are assisting in the assessment of tenders for this project and another is obtaining experience in nuclear establishments overseas. Extensions of the generating system to meet future electricity requirements involve extensive planning and investigation. As large capital costs are involved close attention must be given to the size of generating units, the timing of their installation and the costs of alternative fuels, as well as the siting of the power stations. The comparative economics of the different sources of power are subject to fluctuation with advances in technology, and it is a sound policy to examine all available alternatives for any project, but defer a decision as long as possible so that the decision is based upon the latest information available.

19 SOME MATTERS OF SPECIAL INTEREST

Preserving the Environment During the past year world-wide attention has been directed to the deterioration of the environment which has frequently accompanied industrial development. Ironically many projects which are necessary for the well-being of a community can have some adverse but unavoidable side-effects on the general environment. The Commission believes that it is necessary to identify these side-effects and to minimise those which are deleterious to the environment, and so welcomes the public interest being displayed in this subject. 1t has a responsibility for the development and use of natural resources, and it recognises that at the same time it has a duty to ensure that all reasonable measures are taken to preserve a healthy and pleasing environment. In fact the Commission has taken a lead in improving standards for its new generating plants which are in advance of statutory requirements.

Air Over the years the Commission has achieved a considerable reduction in the amount of smoke and dust emitted from power stations. Following continual investigation and research, equipment for the control and reduction of dust emission has been improved substantially, and dust emission can now be effectively controlled by the use of electrostatic precipitators. This equipment is expensive, and the total cost of installing electrostatic precipitators in the new Hazelwood and Yallourn 'W' power stations is $10.7 million. Additional expenditure of some $1.75 million is to be incurred in installing similar equipment at Yallourn 'E' Power Station when there are opportunities to do the work during annual overhaul periods. This, together with the retirement from service of older plant, will reduce further dust emission from the power stations. In installing electrostatic precipitators the Commission has adopted a higher standard for air pollution control than that which subsequently has been prescribed under the Clean Air Act. lt will continue to be the Commission's policy not merely to meet minimum statutory requirements for pollution control, but to attempt to anticipate and give a lead in advance of the standards acceptable to the community.

Water Cooling water used in power stations is not contaminated in the process but there is a need to ensure that the temperature of adjacent streams and pondages is not unduly increased. Large capital costs have been incurred in preventing this from happening. The Commission is represented on the Latrobe Valley Water and Sewerage Board and collaborates fully with the Board to ensure that the effect of its activities on the Latrobe River and its catchment area is kept to a minimum. Temperature rises in the river have been minimised by the construction of cooling towers and water storages. In tact the Commission's activities have added to the enjoyment of the area as the Yallourn Storage Dam and the Hazelwood Cooling Pond constructed to provide cooling water for the power stations are proving to be valuable recreational facilities for the public in the area, and are popular resorts tor boating, fishing and swimming. The Hazelwood

20 Cooling Pond is bounded by land owned by the Commission, but, in co-operation with the Shire of Morwell, the Pond has been developed as a centre for a large variety of aquatic sports.

Appearance of Assets Increasing population density and ever-expanding residential development accentuate the problem of siting transmission lines, terminal stations and substations in a manner which has the least detrimental effect on the aesthetics of the locality. The Commission is happy to continue to confer with local municipal councils and other appropriate planning authorities in ensuring the best possible result in the public interest. In some difficult cases it has arranged for the decisions of its expert officers to be reviewed by independent consultants. lt is the practice to publish in the press the proposed routes of main transmission lines and to allow time for any objections to be lodged and considered. In recent years arrangements were made for two independent public enquiries to be held, and these provided opportunities for a broad expression of public opinion. For terminal stations and substations in residential and commercial areas, special attention is being given to the layout, the external walls and to landscaping with trees and shrubs so that a pleasant appearance is maintained in harmony with the surroundings. The undergrounding of high voltage lines as a general practice is uneconomic, but a close watch is being kept on technical developments both in Australia and overseas with the object of adopting any improvement which may reduce the costs of undergrounding. Encouragement is given to the placing of distribution lines underground in new residential estates and a number of developers have accepted the Commission's arrangement for them to contribute the additional costs involved, as invariably the value of the land is increased as a result. In addition the Commission puts lines underground at its own expense in locations where special circumstances exist. Some pruning of trees adjacent to overhead lines is essential but personnel have been carefully instructed to ensure that every practicable step is taken to avoid excessive tree-cutting and to preserve, as far as possible, the natural beauty of areas through which power lines pass. In this regard there are constant pressures from two directions- from those who wish to preserve the natural landscape and others who express concern for the continuity of electricity supply. The Commission has spent substantial sums in beautifying its major works areas throughout the State, and has provided attractive amenities for visitors to these areas. The Commission welcomes inspection by the public of its projects in the Latrobe Valley, at Kiewa and elsewhere and encourages their development as tourist attractions. Future of Yallourn Township Last year it was reported that a detailed investigation had shown that on both economic and technical grounds the development of the Yallourn Open Cut should proceed through the area upon which the township of Yallourn is located. In April, 1969, the Yallourn Town Advisory Council was informed of the effect of this proposal on the future of the township, and of the program for gradual

21 removal of houses up to the year 2000. The first area of the town required would be the south-east section, where about 200 houses would need to be removed by 1985, by which time most of these houses will be about 60 years old. In November, 1969, following representations from interested parties who pressed for the town to be retained, the Advisory Council recommended that a Parliamentary Committee of Enquiry investigate the matter of the future of the Yallourn township. The Commission advised that it had no objection to the proposed enquiry, and on 9th December, 1969, the Governor in Council gave approval to an enquiry being conducted by the Parliamentary Public Works Committee with the following terms of reference: "To enquire into the correctness of the decision of the State Electricity Commission of Victoria that the town of Yallourn be removed so that established coal reserves in the Yallourn town area can be mined as a development of the Yallourn Open Cut." The Committee began its hearing in July, 1970; the enquiry was still proceeding at the date of this report. Metropolitan Municipal Electricity Distribution Systems

When the Commission was established it was required by Parliament to report to the Minister the steps which should be taken to secure the ultimate co-ordination and amalgamation of the many small electrical undertakings throughout the State which had to that date been developed on a piecemeal basis. The task of developing a unified State-wide electricity distribution system has been completed with the exception of the incorporation into the system of the eleven metropolitan municipal undertakings. For some years the Commission has expressed its view that the process of unifying the State electricity system should be completed to achieve a cohesive approach to the distribution and marketing of electricity for the benefit of all electricity consumers in the State. The eleven separate municipalities who hold interminable Orders in Council to distribute electricity within their municipal boundaries have been unwilling to negotiate for acquisition of their electrical undertakings, and the matter has reached the stage where legislative action will probably be required for its resolution. The Commission has been particularly concerned at the declining growth of electricity sales in some council areas. Bulk supply charges have been adjusted to provide a greater margin for councils (amounting to some $1.2 million over a two-year period) to encourage their participation in marketing and promotion plans for increasing electricity sales, particularly in off-peak periods. This arrangement will be reviewed after two years.

22 REVIEW OF MAJOR ACTIVITIES

Marketing and Distribution ELECTRICITY SALES AND INCOME The Commission is placing increased emphasis on market development and sales promotion since by making full use of plant and equipment installed the Subd ivision ac co rd ing to classes of consum ers Year ended 30th June 1970 economies of large scale production can be achieved and consumers can benefit from the resultant savings in costs. At the same time it is making a SALES INC OME concerted effort to improve organisational efficiency. A special study was undertaken in conjunction with Commonwealth Services Incorporated, New York, to establish a marketing program based substantially on economic DOMESTIC analyses developed by the Edison Electric Institute in the U.S.A. to achieve the most effective orientation of marketing efforts. The various sectors of the electrical industry are participating in the Commission's marketing and promotional plans through the Electrical Development Association of Victoria, which is representative of manufacturers, '31 11,. INDUSTRIAL wholesalers, retailers, electrical contractors and the electricity supply authorities. In country areas representatives of these sectors of the industry have joined with the Commission in establishing local electrical development groups. Negotiations were concluded with Broken Hill Proprietary Co. Ltd ., John Lysaght (Aust.) Ltd. and Guest Keen and Nettlefolds (Aust.) Ltd. for the supply of electricity to the steel complex being constructed at Western Port. The establishment of industries of this magnitude ultimately brings a wide range of benefits to the community in general and is one of the most important factors in promoting the overall development of the State. To attract such industries a reliable and adequate supply of electricity is required at competitive tariffs. TOTAL 11 ,070 GW h TOTAL $211.423.29 1 Other negotiations are in hand for supply to prospective major industrial plants at Western Port and other areas.

Tariffs For some time the Commission has been concerned regarding the level of tariffs for large industrial consumers in Victoria. Past development of heavy industry has to a large degree been determined by consumer needs of the local population, and industry generally has developed locally in order to gain the benefits of proximity to a substantial market and access to an adequate work force. However, the situation has changed rapidly, with large industrial development becoming increasingly oriented to interstate and overseas markets. To make Victorian tariffs more attractive and to encourage industrial development within Victoria, tariffs for industrial consumers using large amounts of electricity were reduced from 1st January, 1970. Tariff 'M' which is applicable to large high load factor consumers was reduced by 15%. The industrial all-purpose Tariff 'D' was also reduced, resulting in savings of up to 10% for large industrial consumers. A new domestic tariff known as the Better Electric Living Tariff 'GC' was introduced on 1st January, 1970. This tariff results in substantial savings for those consumers who qualify by having home installations with a permanently wired electric range, a permanently wired hot water service, and an electric refrigerator. By promoting the use of these appliances the new tariff will encourage more even use of electricity in the home throughout the 24 hours of the day and help to achieve a more balanced load growth.

23 Above: Heat Banks- a new concept in heating- which provide fully automatic heating at low cost off-peak rates.

At right: Apart from being speedy and efficient, electric cooking is so much cleaner. With its flameless heat the cooker stays cleaner and so do walls, curtains, shelves and ceilings. The wide range of electrical appliances permit great versatility in the design of kitchens.

24 Above: Effective lighting enhances the appeal of this shopping arcade in South Yarra. The external lighting of buildings is being used increasingly for both decorative and security purposes.

At right: High level lighting on the Tullamarine Freeway between Melbourne and the city's new international airport.

25 These tariff reductions are designed to complement each other by promoting greater load growth in a balanced fashion to improve the load factor on the GROWTH OF RETAIL ELECTRICITY Commission's system with consequential economy of operation. SALES IN VICTORIA Electricity Sales GWh Electricity sold to retail and bulk consumers, excluding exports to New South Wales and supply to Alcoa of Australia Pty. Ltd., totalled 9,991 GWh, an increase of 6.7% on the previous year. This compares w ith an increase of 8.4% in 1968/ 69. (a) Retail Sales Sales to retail industrial consumers, excluding Alcoa, increased by 8.6% (5.6% in 1968/69) and to retail commercial consumers by 6.9% (1 2.6% in 1968/69). The number of consumers in these classes increased by 4,171 (5.3% ). Sales to retail domestic consumers increased by 6.6% (1 1.9% in 1968/69), and the number of consumers increased by 3.5% compared with an increase of 4.0% in the previous year. The following table shows how the average consumption per domestic consumer has more than doubled in the past 20 years. Average kWh Sold Year Ended Number of Retail Per Domestic 30th June Domestic Consumers Consumer 1950 331,506 1,521 1955 451 ,223 1,889 1960 571,869 2,584 1965 704,155 3,214 1940 1945 1950 1955 1960 1965 1970 1970 849,028 3,850 (b) Bulk Supply Sales • Industrial Traction D Sales to bulk supply areas totalled 2,598 GWh, an increase of 5.1 % on the previous year. This compares with an increase of 7.4% in 1968/69 . • Commercial Domestic From June, 1970, bulk supply charges to the metropolitan municipal electricity supply undertakings were adjusted to provide an incentive for the municipal • Public lighting councils concerned to co-operate in the Commission's plans to promote off-peak sales to improve the overall system load factor, and to facilitate negotiations for large industrial loads in these areas. The adjustments involve a reduction in revenue to the Commission from bulk supply sales of some $600,000 per annum. Electricity Supply Branches Effective from 8th September, 1969, the electricity supply branches throughout the State which had previously been included in the former Electricity Supply Department were made responsible directly to the Assistant General Manager (Marketing and Distribution). For functional matters the branches follow guide lines established by the specialist departments. The revised organisation is part of the effort for improved efficiency and has operated most effectively. lt has brought management closer to the marketing and distribution units which deal directly with consumers. During the year there was an increase of 33,037 in the total number of retail consumers, taking the total to 1, 014,572. This has involved construction of the following distribution works:- Total at Increase % 30 / 6/70 on 30 / 6/ 69 Increase Substations 62,043 2,905 4.9 Distribution lines (route miles) - high voltage 43, 255 1,694 4.1 - low voltage 14,371 325 2.3 Poles 727,450 28,838 4.1

26 Rural Supply Extension Policy With the exception of a relatively few dwellings in remote areas the electrification of the State has been completed. For many years the Commission has continued to extend supply to rural areas although this was generally uneconomic. However, it has recognised that the great benefits of electricity should be available to as many country people as practicable. While the cost of extending supply has steadily increased the revenue gained from rural areas has been low. In addition, many optional and seasonal loads (such as certain irrigation pumping installations and infrequently occupied holiday homes) are very uneconomic to supply. These factors, together with steadily rising costs of labour and materials, the competitive situation in the energy market and the need to maintain or reduce electricity tariffs, have caused the Commission to limit the expenditure to be incurred per consumer for uneconomic supplies, and to require a non-refundable contribution of the balance of the cost from those seeking such supplies. This new policy was implemented from 17th August, 1970, but it does not affect those extensions for which commitments had been made under the previous conditions.

Merchandising The merchandising of electrical appliances through the Commission's metropolitan and country showrooms continued in co-operation with the electrical trade. Electrical retailers have been included in special sales campaigns. For many years the Commission has repaired appliances sold in its showrooms, charging only for the materials used, but in view of rapidly rising costs it has been found necessary to introduce standard charges to cover labour and overhead costs. These additional charges are being introduced on a graduated basis over three years.

Public Lighting During the year, 37 miles of high level traffic route street lighting were installed in metropolitan and country areas. In addition, approximately eight miles of freeway lighting, comparable with overseas standards, were placed in service with the opening during the latter half of the year of the Tullamarine Freeway, Strathmore By-pass and South Eastern Freeway, Stage 2. A special project in which the Commission is actively involved is the Lower Yarra Crossing Authority's "West Gate Bridge" project and its western approaches. This installation will use for the first time in Australia 400 watt 'high pressure' sodium vapour lamps for traffic route lighting.

Isolated Generation At the request of consumers the Commission has examined in detail some 50 proposals for isolated generation. Only four of these proposals have proceeded to the installation stage; of these, two have now reverted to Commission supply for the whole of their requirements and the other two are not yet producing electricity. The reason for so few cases being tenable is that this development is a reversion to what is now a well out-dated method of electricity supply- from privately owned plant on consumers' premises. As such, it is highly unlikely to be economic compared with purchased supply from

27 the grid system and separate heat generation, except in the rare c ircumstance where the electricity and heat requirements are large and virtually coincident in occurrence. In the latter cases, the Commission can assist by permitting parallel operation of private plant with the grid system and providing standby supply. Also it is prepared to take an active role in providing expert advice to consumers on technical and economic aspects of isolated generation proposals to ensure that they can assess all factors before making a decision.

New Applications for Electricity New electric storage heaters- commonly termed " Heat Banks" - were promoted extensively in conjunction with manufacturers and are proving popular with the public. Their virtues of cleanliness, simplicity and low-cost operation have strong appeal, and it is anticipated that they will grow in popularity in Victoria. Development work is also being undertaken in a number of other areas including increased lighting levels associated with health and productivity needs, use of electricity for grain aeration and drying to assist in long period storage, and environmental control. Close contact is being maintained with overseas developments on electric vehicles, particularly through the Electric Vehicle Association in the U.S.A. of which the Commission is a member. Battery driven vehicles would make a major contribution towards mitigating air pollution problems.

Haze/wood Terminal Station­ where power from Haze/wood Power Station is stepped up from 220 kV to 500 kV for transmission to Melbourne. 28 Construction

Hazelwood Power Station The approved capacity of this station is eight 200 MW turbo-generators and eight 1,650,000 lb/hr pulverised brown coal fired boilers. The seventh unit was accepted for commercial service in March, 1970, and the eighth is scheduled for operation at the end of 1970. Tests and modifications to the boiler plant to improve reliability of performance were substantially completed.

Yallourn 'W' Power Station This station will comprise two turbo-generators of 350 MW each and two 2,500,000 lb/hr pulverised brown coal fired boilers. The main steelwork structures for the first unit were completed during the year, and erection of the boiler pressure parts and construction of the shell of the first natural draught cooling tower were begun. The late delivery and erection of boiler steelwork and industrial disputes early in 1970 have delayed progress. However, following revision of the construction program it is expected that the first unit will still be available for service before the winter of 1972, and the second late in 1973.

Main Transmission The first stage of the 500 kV system, the first alternating current system to operate at this voltage in the Southern Hemisphere, is now in service. This consists of a single circuit line connecting 500 kV terminal stations at Hazelwood in the Latrobe Valley and Keilor in the Melbourne metropolitan area. Construction of a second 500 kV line between these terminal stations is proceeding and is scheduled for completion by mid-1971. To reinforce supply in the Wimmera area a new terminal station at Horsham, supplied by a 220 kV line from Ballarat, was placed in service in November, 1969. Supply in the north-eastern area of the State also was reinforced by a new terminal station near Glenrowan, completed in April, 1970. The 220 kV system is being further augmented by the establishment of 220 kV transformation at Fisherman's Bend Terminal Station and construction of a new terminal station at East Rowville. Transformer capacity was increased at the Richmond, Shepparton and Morwell terminal stations and is being increased in the Brooklyn, Keilor, Ballarat and Glenrowan terminal stations. New 66 kV zone substations were placed in service at Ararat, Bentleigh, Elwood, Fisherman's Bend, Frankston South, Hastings, St. Kilda, South Melbourne and in Flinders Lane, Melbourne. Major reconstruction work was completed at the Gardiner and Wodonga zone substations. There are now 1,943 route miles of high voltage transmission lines in the main transmission network, comprising 113 miles of 500 kV line and 1,830 miles of 330 kV and 220 kV lines.

29 Electricity Production

Sources of Electricity for State System

ELECTRICITY PRODUCTION 1960-1970 Installed · Base year 1959-60 = 100 Capacity of Maximum Demand GWh Generated Power Stations Generators 1968 / 69 1969/70 1968/ 69 250 (30/6/70) 1969/70 MW MW MW

1. Base Load Thermal Stations - 200 Hazel wood 1,400.0 1,463.0 1,242.0 7,410.2 5,838.1 Yallourn (incl. Briquette Factory) 567.5 573.0 626.7 3,115.9 3,896.0 Morwell 170.0 182.0 183.0 1 '166.8 1,175.0 150 Sub Total 2,137.5 11 ,692.9 10,909.1 (86.9%) (84.8%) 2. Peak Load Th ermal Stations- 100 Melbourne Newport 228.0 190.0 250.8 232.3 324.8 Spencer Street 109.3 90.0 90.0 59.6 55.6 Richmond 38.0 39.0 39.0 30.2 17.7 50 Geelong 30.0 31.0 38.5 3.6 8.9 Ballarat 20.0 20.4 25.0 2.6 2.9 Red Cliffs 15.5 15.3 7.0 1.0 0.7 Araratt 3.2 4.2 0 1960 '61 '62 '63 '64 '65 '66 '67 '68 '69 '70 Sub Total 440.8 333.5 410.6 (2.5% ) (3.2% ) 3. Hydro Stations- 011 0 Briquettes Kiewa 183.6 209.0 197.0 338.3 396.7 Eildon-Rubicon (incl. Cairn Curran) 265.0 226.0 • Black coal Raw brown coal 150.9 142.0 139.6 (Incl. coke) Sub Total 334.5 603.3 622.7 Hydro stations (incl. Snowy) (4.5%) (4.8%) 4. Stations Operated by Other Bodiest 633.0 593.0 526.0 824.8 925.3 (6.1%) (7.2%) TOTAL 3,545.8 2,536.0§ 2,429.0 13,454.5 12,867.7 (23/ 6/70) (2/7 /68) (1 00.0% ) (100.0%)

10 Install ed capacity is the manufacturer's maxi mum continuous rating of generators. This is subject to limitations imposed fro m time to time by shortage of othe r essential elements such as boiler capacity, c irc ulating water (steam sets) o r wate r (hydro sets). t A cquired 30th June, 1969, retired 29th September, 1969. t This capacity refers to Vi ctoria's firm entitlement from the Snowy Mountains scheme, plus half the capacity of Hume Power Station. The output from the Snowy Mountains scheme, after meeting Commonwealth reservations, is shared between New South Wales and Victoria in the ratio 2:1, and the output from Hume Power Station is share d equally between New South Wales and Victo ria. Figures fo r electric ity generated also include interchange from New South Wa les and purchases from Alcoa of Aust ralia Pl y. Ltd. (Ang lesea), Phosphate Company o f Australia (Geelo ng), Tumut River County Council , Electricity Trust of South Australia, Cresco Fertilisers Ltd. (Portland) and Radio A ust ralia (Congupna). § This was a lso the maximum demand o n the system for the 1970 winter.

Interchange with New South Wales Interchange arrangements with New South Wales continued to work satisfactorily to the mutual advantage of both States.

During the year the Commission supplied 38 GWh to the Snowy Mountains Hydro-electric Authority for the operation of the Jindabyne Pumping Station which pumps water from Jindabyne Reservoir on the Snowy River into the headworks of the Murray group of power stations.

30 Brown Coal Production

Operations during the year brought the total brown coal excavated in the Latrobe Valley to nearly 382 million tons. For the first time production from the Morwell open cut exceeded that from Yallourn. BROWN COAL PRODUCTION 1940-1970 Tons (mi llions) Coal Won Overburden Removed (tons - thousands) (cubic yards- thousands) 1969/70 To Date 1969/70 To Date Yallourn 10,105 292,181 6,843 117,801 Morwell 12,287 68 ,270 263 33,424 Yallourn North 397 21 ,266 Nil 21 ,717

22,789 381 ,717 7,106 172,942

(22,466 thousand last year) ~ . 662thousand lastyea0

The Latrobe Valley power stations consumed 17.9 million tons of the combined brown coal production of the Yallourn and Morwell open cuts; the balance (4 .5 million tons) was used in the manufacture of briquettes. Coal won at Yallourn North was used mainly by Australian Paper Manufacturers Limited at Maryvale (353,856 tons) and the Gas and Fuel Corporation at Morwell (33,458 tons).

Morwell Open Cut Commissioning of equipment installed in the control centre to monitor and provide operational control of Morwell open cut (scheduled for late 1969) has 1940 1945 1950 1955 1960 1965 1970 been delayed but the equipment should be in service before the end of 1970. No. 10 bucket wheel dredger (capacity 1,750 cu yd of overburden, or 1,600 tons • Morwell open cut Yallou rn open cut of brown coal per hour) commenced operations on 18th March, 1970, and No. 11 (capacity 1,600 cu yd of overburden or 1,750 tons of brown coal per • YallournNorthopencut hour) was placed in service on 13th July, 1970. With the commissioning of these two dredgers there will be sufficient excavating capacity to meet the full requirements of the Hazelwood and Morwell power stations. However some further conveyor equipment will be requ ired . Installation of the second stage of the conveyor system in the West Field continued during the year with a further section being placed in service on 12th January, 1970.

Yallourn Open Cut A contract has been placed for the design and manufacture of a conveyor system to supply coal for the new Yallourn 'W' Power Station.

31 Briquette Production and Sales

Production (Tons) Yallourn Morwell Total BRIQUETTE SALES 1966-1970 1965/ 66 501 ,51 2 1,381 ,302 1,882,814 1966/ 67 483,730 1,336,390 1 ,820,120 Tons (thousands( 1967/ 68 475,075 1,269,873 1,744,948 1968/69 335,744 1,135,584 1,471,328 700 1969/70 257,403 1,283,315 1,540,718 The Yallourn 'B' Briquette Factory was retired from service on 22nd October, 1969, after 38 years' continuous three-shift operation, during which time it produced nearly 8 million tons of briquettes. Sales Sales to the public (including export) totalled 1,128,056 tons, the highest ever recorded and an increase of 20 ,579 tons on 1968/69, the previous best year. This result, achieved despite intensive competition from other fuels, clearly demonstrates the importance of briquettes in the energy market. Domestic sales were down 20,035 tons (3.7%) to 522,986 tons. However, a record was established for industrial sales with a total of 605,070 tons, which was 40,614 tons (7.2%) in excess of sales for 1968/69. Sales to the Gas and Fuel Corporation ceased with the advent of natural gas 1oo and the c!osing of the Corporation's gasification plant at Morwe:l in November, 1969. 0 Briquette Char Market 1966 1967 1968 1969 1970 Australian Char Pty. Ltd . completed construction of a char manufacturing plant Domestic lnduslrial adjacent to the Morwell briquette factory, and commenced operations in May, (incl. export) 1970. When in full production the plant will use approximately • Gas & Fuel Corpn. 140,000 tons of briquettes annually. In the meantime 25,075 tons of briquettes were exported to Japan during the year for the manufacture of char for the carbon disulphide industry, the carbon disulphide in turn being used for the production of rayon. Production of char for the local market commenced at the Footscray plant of the Colonial Gas Association. Initially this material is being processed to produce a new barbecue fuel. Sales of briquettes continue to be made to Gippsland Cement and Lime Co. Pty. Ltd. to produce char for use in its cement production process. The foregoing developments in the use of briquettes for the production of char will offset the loss of sales to the Gas and Fuel Corporation's Morwell plant.

Marketing Developments An accredited distributors' scheme was put into operation in the metropolitan area from 1st December, 1969, after consultation with the Fuel Merchants' Association. By reducing the number of retail outlets a proposed rise in the retail price of briquettes was avoided and the standard of service to the public was improved. lt has been possible for the Commission to cease operations at the briquette depots at Malvern, Essendon, Westall, Camberwell and Glenhuntly and at the packaged briquette depots at Box Hill South and Cheltenham and to arrange for the distribution of briquettes from these centres to be carried out by selected wholesalers. Manufacturers are continuing to develop new briquette-burning appliances. A new central heating system was released to the public in April, 1970, and the development of two new central heating systems is well advanced.

32 Tramways BALLARAT AND BENDIGO

Patronage of the tramway systems at Ballarat and Bendigo continued to decline. The combined loss on the two systems for many years approaching $500,000 a year- was $499,303 last financial year. The financial results and passengers carried are shown in the following table: Year Ended Income Expenditure Loss Passengers 30th June $ $ $ 1966 248,375 702,312 453,937 4,332,771 1967 281,677* 754,920 473,243 3,860,604 1968 266,077 753,112 487,035 3,537,177 1969 265,575 743,727 478,152 3,237,291 1970 262,194 761,497 499,303 2,902,064 *A fare increase resulted in an increase In income in this year. In June, 1968, the Transport Regulation Board, at the request of the Minister of Transport, conducted a public enquiry into the public passenger transport facilities in the two cities and concluded that they would be better served by modern omnibus services. lt was recommended that the tramway systems be discontinued as soon as alternative services could be provided. The Commission then presented to Parliament notice of its intention to abandon the tramway systems pursuant to Section 74 of the State Electricity Commission Act, but on 2nd October, 1968, a motion that the proposed abandonment of the tramways be not allowed was passed by the Legislative Council. As the patronage of the tramway services is continuing to decline rapidly the case for the introduction of an omnibus service has strengthened and notice of intention to abandon the tramway systems was again presented to Parliament on 15th September, 1970. Under the provisions of Section 74 of the State Electricity Commission Act this notice must lie on the table of both Houses of Parliament for the ensuing 24 sitting days of the Legislative Assembly and the abandonment may proceed unless either House passes a resolution to the contrary. At the date of this report the required period had not expired. An undertaking has been given that no tramway service will be abandoned until such time as there is available an omnibus service satisfactory to the Transport Regulation Board. Payments will be made to the municipalities to enable them to remove tramway tracks and restore roadways. Also payments will be made over a period of five years to the Transport Regulation Board to enable fare concessions to pensioners to be continued; in fact these concessions will be extended to those who now travel by bus in these provincial cities. Generous retrenchment benefits will be available to those employees who cannot be placed in alternative employment within the Commission.

33 Public Safety and Other Regulatory Responsibilities

Electric Light and Power Act 1958 There remain 13 electricity supply undertakings operating under this Act in Victoria. Of these eleven are municipal undertakings in the metropolitan area receiving supply in bulk from the Commission. The others are a municipal undertaking operated by the Monaro County Council of New South Wales which by arrangement has extended its supply lines to serve isolated areas in the far east of Victoria, and a private undertaking generating supply in the township of Mallacoota.

Licensing of Electrical Mechanics 14,455 licences were in force in the following Grades: Grade 'A' 9,341 Grade 'B1' 129 Grade 'B' 2,206 Grade 'C' 2,779 In addition, 2,860 special conditional permits were issued, 1,795 for periods not exceeding six months and 1,065 for periods not exceeding twelve months. Three licensing examinations (including theory and practice) were held. A Uniform Licensing Committee representing electricity regulatory authorities in all States has been investigating proposals to achieve uniformity between the States in the examination and licensing of electrical mechanics. As a first step, agreement has been reached enabling certain holders of 'A' Grade licences to obtain a recognising licence in any other State without further examination. Arrangements are being made tor the related statutory regulations to be amended so that this scheme can be fully implemented.

Registration of Electrical Contractors Registrations in force totalled 2,107 being 49 more than the previous year.

Electrical Approvals Board The Commission records its appreciation of the valuable contribution to electrical safety rendered by members of the Board. Under the Board's constitution, two of its members retire each year. Mr. R. W. Rose, representing electrical contractors in Victoria, was reappointed for a further three years. Mr. J. F. Arthur retired after representing wholesale electrical traders for three years. Mr. N. H. Armfield was appointed to fill this vacancy. Mr. H. W. Reynolds was appointed Chairman of the Board in place of Mr. G. J. Gay, who has been appointed Assistant Chief Electrical Inspector. Mr. N. G. Trathen was appointed Deputy Chairman. During the year, 1,974 appliance prototypes were tested by the Board and approval given to 1,126. In addition, 952 other articles were voluntarily submitted for testing.

34 Electrical Fatalities Of 13 electrical fatalities during the year four resulted from contact with overhead conductors, three from contact with live parts of appliances which had become defective, two from contact with live equipment, two from incorrectly connected flexible cords, one from defective wiring and one from interference with fixed wiring. The number of fatalities has remained at a low level despite substantial increases in population and also in the use of electricity. As a result of an active safety program the record of electrical safety in Victoria compares favourably with that in other developed countries.

Electrolysis Mitigation Conversion of the metropolitan electrolysis protection system to a thyristor assisted straight drainage system is nearing completion. The high rate of installation of new pipes and cables has made the drainage system more complex and increased the amount of testing and maintenance required. Regulations were approved by the Governor in Council enabling the Commission to prescribe standards for and regulate the use of cathodic protection systems in order to prevent damage to other nearby metallic structures.

35 Commissioners

Reappointment of Commissioner The Governor in Council reappointed Mr. T. P. Scott, F.A.I.I., as a Commissioner for a period of five years from 12th May, 1970. Mr. Scott was first appointed a Commissioner in 1960.

Chairman The Chairman of the Commission, Dr. W. H. Connol!y, attended a meeting of the International Executive Council of the World Energy Conference in Rio de Janeiro, Brazil, in May, 1970. Dr. Connolly is Chairman of the Australian National Committee, World Energy Conference, and the immediate Past­ President of the Conference. Commissioners learned with pleasure that the Australasian Institute of Mining and Metallurgy had bestowed Honorary Membership of the Institute upon Dr. W. H. Connolly in recognition of his services to the State of Victoria in the field of education and in the development of brown coal resources and electricity supply.

Death of Former Deputy Commissioner The Commission records with profound sorrow the death on 13th September, 1969, of Mr. J. Spencer Nail, C.M.G., who served as a Deputy Commissioner from 25th May, 1960, to 6th October, 1960.

Death of Mr. W. J. Price lt is with profound sorrow that the Commission records the death on 30th October, 1969, of Mr. W. J. Price, former Deputy General Manager, who retired on 27th November, 1964, after more than 44 years' service. Mr. Price played a major part in the development of the Commission's organisation and administrative policies from its formative years until he retired. For many years he directed and maintained a financial program which enabled the Commission, despite many serious financial setbacks, to pursue a progressive program of works so essential for the electrical development of the State. He was a Deputy Commissioner from 20th August, 1965, to 15th October, 1965. The Commission recorded its high appreciation of Mr. Price's outstanding service both to the Commission and the State in its 46th Annual Report. Mr. Price made a tremendous contribution to the development of this State during a lifetime of devoted service to the Commission. Even after his retirement he maintained an intense interest in the activities of the Commission and his advice was frequently sought and highly valued by Commissioners and Management.

36 Personnel and Organisation

Retirement of Assistant General Manager Mr. K. W. L. Murray, F.I.E. Aust., Assistant General Manager, retired on 17th October, 1969, after more than 45 years of highly valued service with the Commission. Mr. Murray progressed through various managerial positions in the former Electricity Supply Department to become head of the Department in 1961 as Engineer and Manager, a post requiring both outstanding managerial ability and an extensive knowledge of engineering and of commercial practices. He occupied this responsible position with great distinction during a period which was notable for the expansion of Victoria's rural electrification program and the amalgamation of many country electricity undertakings into the State system. In 1968 Mr. Murray was appointed Assistant General Manager (Administration) in which post he was responsible for the management and co-ordination of the Commission's commercial and administrative activities. Upon a reorganisation of the Commission's higher management in 1969, Mr. Murray as Assistant General Manager applied his extensive knowledge and experience to special assignments including reorganisation of the departments responsible for electricity marketing and distribution to ensure that the people of Victoria enjoy the highest standard of electrical service.

Other Retirements of Senior Staff The Commission also records its appreciation of the splendid service rendered over long periods by the following senior officers who retired on the dates shown:- Mr. A. Lynch, Regional Administrative Officer, Latrobe Valley Region­ on 28th November, 1969, after 40 years' service; Mr. H. W. Elliott, Special Officer (Marketing Policies) -on 19th December, 1969, after 48 years' service; Brigadier Sir William Hall, Comptroller of Stores, Supplies and General Services Department- on 9th January, 1970, after 45 years' service; Mr. V. W. Gore, Comptroller of Stores, Supplies and General Services Department- on 28th July, 1970, after 45 years' service; Mr. L. A. Collins, Field Practices Engineer, Distribution Engineering Department -on 21st August, 1970, after 47 years' service; Mr. A. B. Banks, Construction Engineer, Civil and Architectural Department­ on 25th August, 1970, after 42 years' service.

Queen's Birthday Honours Commissioners learned with pleasure that Her Majesty the Queen in Her Birthday Honours had awarded Mr. J. Lawson, former Overseer, Parks and Gardens, Yallourn, now retired, the British Empire Medal for services to horticulture at Yallourn.

Higher Organisation A Computer Services Department responsible to the Assistant General Manager (Administration) was formed as from 20th October, 1969, to undertake the planning, co-ordination and operation of commercial and engineering electronic data processing services throughout the Commission.

37 Computer services previously were provided by two separate divisions - Systems Division of the Finance Department and the Engineering Electronic Data Processing Division of the Planning and Investigations Department. Consequential senior appointments were: Manager, Computer Services Department- Mr. W. R. S. Webster, A.A.S.A., A.C.I.S., formerly Assistant Chief Finance Officer (Accounting and Systems); Assistant Manager, Computer Services Department- Mr. J. S. Webster, M.B.E., B.C.E., M.I.E.Aust., formerly Officer~in-Charge, Engineering Electronic Data Processing Division, Planning and Investigations Department. Subsequently the organisation of the Finance Department was reviewed and Mr. P. F. Moir, F.A.S.A., A.C.I.S., who had been Assistant Chief Finance Officer (Budgets and Disbursements) became Assistant Chief Finance Officer. Following the resignation of the Chief Engineer, Fuel, Mr. E. D. J. Stewart, on 28th February, 1970, after 19 years of highly valued service, Mr. K. A. Lam in, B.M.E., M.A.I.M.M., Coal Engineer, Latrobe Valley Region, was appointed to this post. Mr. Lamin will continue to be located in the Latrobe Valley with responsibility for coal production activities in the Region, as well as responsibility for developmental and contract work carried out in Melbourne under the direction of the Assistant Chief Engineer, Fuel. Mr. J. M. Alexander, B.Mech.E., M.I.Mech.E., Development Engineer, Fuel, was appointed to this latter position. As from 6th July, 1970, the Electrical Inspection Branch (renamed Electrical Inspection Department) headed by the Chief Electrical Inspector, Mr. B. H. Miller, B.E.E., B.Mech.E., M.I.E.Aust., became responsible to the Assistant General Manager (Marketing and Distribution) instead of reporting directly to the Commission through the Secretary. This change will encourage better co~ordination between electrical safety requirements and electricity supply branch activities. The Commission recognises the importance of preserving the independence of thought and action of the Chief Electrical Inspector so that he may continue to exert a strong influence in electrical safety matters and it will support him fully in carrying out the duties imposed upon him by legislation. He will be required to report annually to the Commission on the effectiveness of policies and practices for the electrical safety of the public and consumers' installations. Total Personnel Wages Staff Total 30th June, 1969 11,897 9,347 21,244 30th June, 1970 11,415 9,226 20,641

Distribution of Personnel Administration 1,849 Power generation 2,689 Main transmission lines, terminal stations and substations 2,034 Electricity supply - extra-metropolitan branches 3,390 - Metropolitan Branch 2,163 Briquette production and distribution 1,223 Coal winning 1,391 General services and workshops - Latrobe Valley 2,422 elsewhere 3,308 Tramways - Ballarat and Bendigo 172

20,641

38 Education and Training

Scholarships awarded during the year and the number current at 30th June, DISABLING INJURY STATISTICS 1970, were as follows: Number of disabling injuries per Scholarships Scholarships million man-hours worked Awarded Current During Year at 30/6/70 60 At Universities degree courses 9 25 8 post graduate awards 7 50 At Technical Colleges diploma courses 5 15 bursaries for Latrobe 3 15 Valley students 40 Overseas scholarships 4 7

Within the Commission 77 cadet engineers and surveyors and 26 engineering 30 and science graduates are receiving special training; 9 trainee linesmen and 106 linesmen-in-training (junior) are undertaking courses at the Training School for Linesmen, and there are 773 apprentices in 25 trades. 20 Special training schemes are also being conducted for a large number of commercial and technical personnel in a variety of pursuits. 10 Seventy-two officers attended Middle Management Courses and 199 attended Supervisory Training Courses. 0 1960 '61 '62 '63 '64 '65 '66 "67 '68 '69 '70 Accident Prevention Years ended 30th June The Commission has continued an active safety campaign for industrial accident prevention. The graph alongside shows that the frequency rate for disabling injuries has been reduced to less than half that of ten years ago.

Industrial Relations Industrial unrest in the form of strikes, work limitations and bans and demarcation disputes continued at a high level. On three occasions during the year industrial action resulted in disruption to electricity supply to the public including forced restriction of supplies to industrial consumers and for public transport. Up to half a million people were put out of work for the duration of the restrictions. This disruption to supply and consequent loss of employment is viewed most seriously by the Commission. Man-hours lost within the Commission during the year due to stoppages and stop-work meetings more than doubled to 348,774 compared with 149,987 in 1968/69. Staff organisations and trade unions have used the strike weapon early as an instrument in furthering their claims in a manner which the Commission believes is quite irresponsible. The Commission has found itself a target for these tactics resulting in immediate and drastic effect on the whole community. The Commission believes that the parties should use the established procedures and provisions of the Commonwealth Conciliation and Arbitration Commission for claims of a basic nature such as basic rates of pay, annual leave periods and standard hours of work, which could have a general effect on the country's economy.

39 However, freer channels of communications are being developed between representatives of staff associations and trade unions and the Commission. lt is hoped this will enable matters likely to cause industrial unrest to be identified at an early stage and action to be taken to relieve tension which could otherwise develop. Major industrial matters during the year were: • In support of the comprehensive log of claims submitted by the Victorian Trades Hall Council on behalf of unions with members employed by the Commission, the Trades Hall Council called 24-hour stoppages on 6th August, 1969, and 14th November, 1969, and a 48-hour stoppage on 27th to 29th November, 1969. On each occasion the use of electricity throughout the State had to be curtailed. After discussions between the Commission and the unions, some increases in wage rates and improved benefits were granted by the Commonwealth Conciliation and Arbitration Commission. • The hearing of a claim by professional engineers throughout Australia for increased salaries was concluded by the Commonwealth Conciliation and Arbitration Commission. Increases ranging from 11% to 15% were granted, and were payable to professional engineers employed by the Commission with effect from 10th October, 1969. Similar increases were granted to kindred professional officers from the same date. • A demarcation dispute between the Amalgamated Engineering Union and the Electrical Trades Union at Hazelwood resulted in a stoppage of work by all Electrical Trades Union members employed by the Commission in the Latrobe Valley between 30th July and 10th August, 1969. The Commission requested a hearing before the Commonwealth Industrial Court in an endeavour to lift the bans but this was adjourned for six months to enable the parties to settle the dispute. The Commission and these unions have set up a special sub-committee comprising representatives of all parties to handle demarcation matters in the Latrobe Valley.

Employees' Retirement and Benefit Fund On the Commission's initiative an employees' retirement and benefit fund which it had felt for some time desirable was introduced. The fund is on a voluntary basis and contributions by employees are supplemented by the Commission paying into the fund at least one and a half times the employees' contributions. Substantial benefits are available to employees upon retirement or in the event of earlier death or disability. The fund has received wide acceptance, over 94% of eligible employees having joined.

40 Statistics

Page Appendix Record of Ten Years' Progress 42 2 Ten Years of Financial Statistics 44 3 Revenue Account Supplementary Information 46 4 Balance Sheet Supplementary Information 48 5 Electricity Consumer Statistics 51 6 Electricity Sales and Income 52 7 Electricity Generation and Disposition 52 8 Generators and Boilers Installed 53 9 Generation of Electricity 56 10 Load Factors and Fuel Used 58 11 Transmission and Distribution Systems 60 12 Brown Coal and Briquette Production 62 13 Electricity Supply Undertakings (Municipal and Pi'ivate) 64 14 Summary of Consumers and Sales- State of Victoria 64 15 Statistical Summary State of Victoria 65 16 Schedule of Standard Tariffs 66 Map Victorian Electricity Supply System Back Cover

41 Appendix 1 Record of Ten Years' Progress

ELECTRICITY PRODUCTION AND SALES 1970 1969

Installed generating capacity (nameplate rating) MW 3,545 ·8 3,331 ·8 Maximum coincident demand on interconnected system (Winter) MW 2,536 ·0 2,387 ·0 Overall electricity generated {incl. purchases) GWh 13,454 ·5 12.867·7 Overall electricity sales* GWh 11,070 ·1 10,554 ·4 Number of consumers {excl. bulk supplies) 1,014,572 981,535 Average kWh sold per consumer*- Domestic .. kWh 3,850 3,750 Commercial kWh 11,276 10,797 All consumers (excl. bulk supplies) kWh 7,978 7,714 Average kWh sold per head (Victoria) kWh 3,043 2,911 Average price per kWh sold*- Domestic .. c. 2·08 2·09 Commercial c. 3·30 3·32 Industrial .. c. 1 ·70 1 ·74 All consumers (excl. bulk supplies) c. 2·07 2 ·10 All supplies c. 1 ·91 1 ·91 Farms served 73,137 72,202 • These figures do not include allowances for unread meters

BRIQUETTES

Produced tons 1,540,718 1,471,328 Sold and used in power stations tons 1.462,711 1,629.894

BROWN COAL PRODUCED

Yallourn Open Cut tons 10,104.906 11,889,642 Yallourn North Open Cut tons 396,571 458,737 Morwell Open Cut .. tons 12,287,469 10,117,377 TOTAL tons 22,788.946 22,465.756

TRAMWAY PASSENGERS .. 2,902,064 3,237,291

42 1968 1967 1966 1965 1964 1963 1962 1961

3,120 ·8 2,895 ·7 2,395 A 2,287 ·7 1,887 ·7 1,898 ·2 1,854 ·6 1,657 ·5 2,429 ·0 2,171·0 2,037 ·0 2,013 ·0 1,793 ·0 1,711·0 1.477 ·8 1,322 ·5 11,935 ·0 11,208 ·8 10,281 ·1 9,674 ·7 8,666 ·9 7,723 ·4 6,889 ·1 6,607 ·0 9,716 ·3 9,143·7 8,354 ·8 7,873 ·6 7,019 ·6 6,171 ·4 5,447 ·9 5,282 ·6 944,434 911,038 876,345 842,062 804,253 775,020 743,176 712,363

3,474 3.433 3,293 3,214 3,049 2,881 2,699 2,741 9,833 9,297 8,694 8,144 7,648 7,145 6,644 6,500 7,583 7.441 7,186 7,120 6,590 5,830 5,323 5,364 2,796 2,687 2,548 2,474 2.253 2,013 1,811 1,797

2·04 2·00 2·02 1 ·96 1 ·95 1 ·97 1 ·98 1 ·98 3·29 3·22 3·25 3 24 3·20 3·24 3·25 3·28 1 ·63 1 ·58 1 ·57 1 52 1 ·56 1 ·73 1 ·81 1 ·83 2·00 1 ·94 1 ·94 1 ·89 1 ·90 2·00 2·04 2·05 1 ·88 1 ·83 1 ·86 1 ·81 1 ·81 1 ·87 1 ·90 1 ·90 70,610 67,608 64,001 60.415 56,412 52,985 49,506 46,838

1,744,948 1,820,120 1.882,814 1,892,759 1,882,626 1,805,347 1,819,937 1,806,619 1,704,831 1,793,742 1,825,567 1,877,880 1,891,976 1,785,271 1,844.351 1,733,554

11,979,824 13,080,772 13,765,815 13,944,456 13,488,000 12,892,693 12,456,478 11,864,704 418,243 422,596 428,689 459,826 597,164 477,736 486,618 840,908 10,122,668 8,479,607 6,872,487 4,597,514 4,080,103 3,873,916 3,298,318 2,515,773 22,520,735 21,982,975 21,066,991 19,001,796 18,165,267 17,244,345 16,241,414 15,221,385

3,537,177 3,860,604 4,332,771 4,727,654 4,945,140 5,583,118 6,004,520 6,071 '150

43 Appendix 2 Ten Years of Financial Statistics

REVENUE ACCOUNT 1970 1969 1968 $m $m $m Income- Electricity sales 212·480 202·394 184·865 Briquette sales 12·287 13 ·253 12 ·467 Brown coal sales ·674 ·771 ·734 Tramways ·262 ·265 ·266 225·703 216·683 198·332 Deduct- Operating expenditure 149·432 145·419 134·997

76·271 71·264 63·335 Deduct- Finance charges and special provisions- Interest ...... 50 ·772 47 ·961 45·517 Loan flotation expense and miscellaneous 1 ·499 1 ·121 2·760 Deferred interest and other expenditure on works under construction written off Additional depreciation of briquette factories and depots .. 5·860 6·000 6·000 Provision for accruing long service leave and retiring allowances 8·000 6·000 Statutory transfers to Consolidated Revenue of Victoria .. 7·200 6·982 6·603

BALANCE OF INCOME USED FOR CAPITAL WORKS 2·940 3·200 2·455

BALANCE SHEET

Fixed assets expenditure 1350·264 1270·640 1184·271 Deduct- Provision for depreciation .. 368·232 329 ·162 293·943

Fixed assets (depreciated) 982·032 941 ·478 890·328 Current assets 51 ·025 47·436 48·177 Investments 60 ·672 48·436 43 ·195 Long term debtors and deferred charges 4·384 4 ·120 4·163 -·--- TOTAL ASSETS 1098·113 1041 ·470 985 ·863

Capital liabilities 911 ·425 871 ·305 834·595 Deferred liabilities 110.702 99·468 86·791 Reserves 41 . 751 37·334 31 ·727 Current liabilities 34·235 33·363 32·750

TOTAL LIABILITIES 1098·113 1041·470 985·863

44 1967 1966 1965 1964 1963 1962 1961 Sm Sm Sm Sm Sm Sm Sm 168·131 156·308 143·934 127·868 116·149 104 032 100·741 12·519 12·270 12·524 11 ·292 10·342 8·894 8·772 ·733 ·722 ·746 ·718 ·646 ·806 1 ·114 ·282 ·248 ·230 ·244 ·210 ·196 ·202 ------181 ·665 169·548 157·434 140 ·122 127 ·347 113.928 110 ·829 128·428 119 ·855 111 ·222 103·398 92·413 84·764 80·335 53·237 49·693 46·212 36·724 34·934 29·164 30·494

41 ·758 39·069 36·308 34·146 31 ·858 28·948 25·948 1 ·668 1 ·930 1 ·296 1 ·372 1 ·432 1 ·692 1 ·606 2·552 ·500 1 ·016 2·500 4·000 5·000 2·000 5·549 ·526 ·475 ·262 3·168 3·581 ·706 ·628 1 ·476 ·440 (loss)

1098·844 1009 ·124 926·787 856·928 791 ·956 737·632 679·883 260·398 226 ·691 192 ·024 167·468 144·212 123·226 104.768 838·446 782·433 734·763 689·460 647·744 614·406 575·115 41 ·409 39·474 36 ·122 31 ·766 30 ·190 27·278 27·238 55·448 55·325 54·784 44·052 36·602 25·448 20·026 5·873 5·835 6·276 9·896 9·766 9·206 9·896 941 ·176 883·067 831·945 775·174 724·302 676·338 632·275 798·279 753·508 717 ·805 680·704 642·731 €01 ·856 562·668 80·779 72·422 60·239 49·395 38 ·441 30·875 27·353 27·732 31 ·473 27·437 23·646 22·492 21 ·244 22·289 34·386 25·664 26·464 21 ·429 20·638 22·363 19 ·965 941·176 883·067 831·945 775·174 724·302 676·338 632·275

45 Appendix 3 Revenue Account Supplementary Information

FOR THE YEAR ENDED 30th JUNE, 1970

A. RE-STATEMENT OF REVENUE ACCOUNT AS ELECTRICITY BUSINESS WITH SUBSIDIARY COAL, BRIQUETTES AND TRAMWAYS SALES AND SERVICES

Last Year $ $ Income from sales of electricity 212.479,832 202,393,866

Expenditure Transmission Generation and Distribution $ $ Brown coal and briquettes (total expenditure, including capital charges and overheads, less income from sales) 22,618,827 22,618,827 25,211 '179 Purchased fuel 234,789 234,789 217,754 Purchased electricity .. 10,050,025 10,050,025 8,906.103 Operation and maintenance 18,071,585 22,999,230 41,070,815 42,354,988 Interest (direct) 18,569,830 25,927,300 44,497,130 41,366,774 Depreciation (direct) ...... 19,629,115 19,231,587 38,860,702 32,920,281 Administration, customers' accounting, marketing and sales promotion 4.132,556 15,708,754 19,841,310 18,020,983 Employees' service benefits, accommodation and general services 5,476,391 3,930.933 9,407.324 9,680,463 Loan flotation expense 338,400 434,000 772.400 480,000

$99,121,518 $88.231,804

Tramways expenditure (net after deduction of income $262, 194) .. 499.303 478,152 Miscellaneous expenditure (net after deduction of income $123,961) 627,758 575,696 Additional depreciation of briquette factories and depots .. 5,859,786 6.000,000 Provision for accruing long service leave and retiring allowances 8,000,000 6,000,000 Provision for statutory transfers to Consolidated Revenue of Victoria- On gross income 6,600.000 6,300,000 Under provision in 1968/69 30,000 120.000 On brown coal production .. 569,724 561,644

$209,539,893 $199,194,017 --·--- Balance of income used for capital works .. $2,939,939 $3,199,849

B. CAPITAL CHARGES

INTEREST

On capital liabilities 49,248,146 46.755,439 On advances for capital works including provident fund and municipalities 5,823,118 5,188,127 On current liabilities 38,302 26,325 ___.. _ 55,109,566 51,969,891 Deduct: Interest earned on investments 3,391,271 3,031,208

-~--~-·- $51,718.295 $48,938,683

Allocated to Revenue Account- Generation, transmission and distribution .. 44,497,130 41,366,774 Coal and briquette production 2,943,065 3,340,625 Service facilities 3,331,714 3,254,110

-~··---- 50,771,909 47,961,509 Fixed Assets - component of charges for services 946,386 977,174

$51.718,295 $48,938,683

46 DEPRECIATION

Depreciation in accordance with pre-assessed asset lives (adiusted when necessary) has been allocated to- Last Year Revenue Account- $ $ $ Generation. transmission and distribution 38,860,702 32,920,281 Coal and briquette production 5,339,640 5,344,057 Service facilities 3,906,105 4,694,293 --·····--- 48,106.447 42,958,631 Additional depreciation of briquette factories and depots 5,859,786 6,000,000

53,966,233 48,958,631 Fixed Assets- component of charges for services 1,204,177 1,291.256

$55,170.410 $50.249,887

LOAN FLOTATION EXPENSE This expense has been allocated to Revenue Account- Generation, transmission and distribution 772.400 480.000 Coal and briquette production 98,600 65,500

$871,000 $545,500

C. GENERAL OVERHEADS

ADMINISTRATION AND GENERAL EXPENSES This overhead including customers' accounting, marketing and sales promotion expenses has been allocated to - Revenue Account 20.433,976 18,718,943 Fixed Assets 1,236,811 1,372,054

$21,670,787 $20,090,997

EMPLOYEES' SERVICE BENEFITS, ACCOMMODATION AND GENERAL SERVICES This overhead, which includes superannuation contributions, long service leave and retiring allowance payments, training and education, safety, medical, recreational, bus services, townships and housing, hostels, bush fire prevention and other Latrobe Valley and Kiewa area services, has been allocated to Revenue Account 10,149,993 9,944,375 Fixed Assets 974,355 1,180,063

$11,124,348 $11,124.438

D. MISCELLANEOUS EXPENDITURE

Brown coal investigations 306,191 268,352 Electrical inspection and regulation for State of Victoria 327,076 282,822 Other expenditure and income Cr. 5,509 24,522

$627,758 $575,696

47 Appendix 4 Balance Sheet Supplementary Information

AS AT 30th JUNE, 1970

A. MATERIALS AND FUEL

30/6/70 30/6/69

$ $

Construction and maintenance stocks 9,889,680 9,522,609

Briquettes and fuel oil 2,588,122 1,587,240

Electrical and fuel appliances for sale 1,742,370 1,239,817

Manufactures in progress 245,015 220,992

$14,465,187 $12,570,658

B. INVESTMENTS

Investments at 30th June, 1970, comprise- Cost

$ Government securities

Commonwealth market value $20,765,782, face value $21,847,220 21,955,798

Semi-Government- market value $13,341 ,768, face value $14,595,478 14,595,478

Other securities (short term money market, etc.) 23,752,531

Bank deposits 318,284

Shares in Australian Char Pty. Ltd. 50,070

$60,672,161

They represent investment of­ $

Loan sinking fund 13,904,600

"Self Help" contributions not yet spent 7,750,000

Contractors' and consumers' deposits .. 54,794

Reserves, provisions and short term funds 38,962,767

$60,672,161

48 C. FIXED ASSETS SCHEDULE- Expenditure for year and total at 30th June, 1970

ELECTRICITY SUPPLY OTHER AREAS I ALL AREAS I LATROBE VALLEY BRANCHES AND GENERAL

New Total at New 1 Total at New Total at New Total at Expenditure 30/6/70 Expenditure· 30/6/70 Expenditure 30/6/70 Expenditure 1 30/6/70 ------1-----J------i·-···---··---~1·- ----·--- -1-----1------$ $ $ $ $ $ $ Coal Production System .. 4,324,978 75,566,588 4,324,978 75,566,588

Briquette Production and Storage­ Yallourn Briquette Factory . . . . 9,781 5,100,347 Morwell Briquette Factory . . . . 30,669,595 Briquette Storage 49,281 329,635 19,912 3,790,854 78,974 39,890.431

Power Production - Thermai- Yallourn .. . . 83,845 104,616,640 Morwell .. . . 20,029 40,736,532 Hazelwood .. " 19,067,960 21 2,585,265 Yallourn ·w· .. . . 12.150,564 17,485,068 Newport .. 21,684,179 Richmond .. 2,398 6,952,185 Geelong .. 7,907,071 Ballarat .. 6,361,594 Mildura-Red Cliffs (in- cluding internal com­ bustion) . . . . 4,067,861 31,324,796 422,396,395

Hydro­ Kiewa .. 25,830 67,577,258 Eildon and Mountain Streams 8,892,763 25,830 ! 76.470,021

Transmission System. . 4,129,87 5 33,897.445 26,276,465 262,115,978 30,406,340 296,013,423

Distribution System - Metropolitan . . . . 7,303,612 80,103,696 Provincial and Country Branches . . . . 19,274.259 252,014,015 26,577,871 332,117,711

General Services Offices, Stores, Work- shops, etc. . . 292,663 13.818,769 506.432 24,669,311 799,095 38,488,080 INCLUDED IN Plant and Equipment 185,618 1,769,784 1,146,847 : 13,248,449 1,332,465 15,018.233 Accommodation, Town­ DISTRIBUTION ships, Hostels, etc. . . 100,536 8,172,790 17 818,211 100,553 8,991,001 Miscellaneous Services SYSTEM (roads, railways, sewer­ age, electricity, 'phones, fire services, etc.) .. 507,999 19,635,616 1.427,744 12,309,125! 1,935,743 31,944,741

Total Cost of Fixed Assets . . 40,923,129 564,384,074 26,577,871 :332,117,711 29,405,645 1 440,394839 96,906,645 1.336,896,624

Deduct- Provision for Deprecia- tion .. 174,282,554 47,118.429 146,831 ,061 368,232,044

Depreciated Cost of I Fixed Assets . . 40,923,129 390,101,520 . 26.577,871 284,999,282 29,405,645 293,563,778 96,906,645 i 968,664,580

Add- Development of Open Cuts- : : Balance of Cost . . 193,330 13,368,081 I . 193,330 : 13,368,081 1 1 1 TOTAL .. .. . $ _4_1·.-1-1-6,-4-59+40-3-,4-6-9,-6-01- 26,s77,s71l2s4,999,2s2j-2-9,-4-o_s_,_64_s_ _2_9_3_,s_6_3_,7_7_s_ _9_7_,-o9_9_,9_7_sl 982,032,661

The cumulative Depreciation Provision movements were $ Balance at 30th June, 1969 .. 329,161,724 Add-Provision for year to 30th June, 1970 54,660,126.

383,821,850 Deduct-Retirements and adjustments applied during year .. 15,589,806

Balance at 30th June, 1970 $368,232,044

• Excludes $510,284 amortisation of development of open cuts.

49 D. CAPITAL LIABILITIES

INSCRIBED STOCK AND DEBENTURES $ Balance at 30th June, 1969 633,008,917 Issues during year ended 30th June, 1970 76,007,840

709,016,757 Deduct-Redeemed or repaid during the year *48,690,199

Balance at 30th June, 1970 $660,326,558

• Includes $44,654,000 in respect of maturing private and public loans {of which $27,935,500 was converted) and $746,200 maturing area loans. The Commission stack and debenture borrowings are subject to sinking fund provisions (unless otherwise approved by the Governor-in­ Council), but, because of their comparatively short currency, there remain at maturity substantial balances to be reborrowed in the form of conversions and new subscriptions in renewal loans, or to be redeemed from the Commission's internal funds. As at 30th June, 1970, the Commission's stock and debenture liability, in years of maturity, is: $ $ 1970-71 41,854,000 1974/75 45,645,000 1971/72 46,255,000 1975/76 34,317,000 1972/73 40,205,000 1976/77 55,392,000 1973/74 33,682,000 Later Years Balance The sinking fund for redemption of Commission Stock and Debentures stands as follows: $ Balance at 30th June, 1969 23,933,878 Add-Sinking Fund requirements tor the year ended 30th June, 1970 5,948,828

29,882,706 Deduct-Amount attributable to loans which matured during the year 3,465,429

Balance at 30th June, 1970 $26,417,277

At the 30th June, 1970, this fund consisted of the following: Investments at face value 13,904,600 Loans re-purchased in the open market, and repaid prior to maturity .. 11,865,216 Moneys temporarily employed in the business .. 647,461

$26,417,277

VICTORIAN GOVERNMENT ADVANCES $ $ Balance at 30th June, 1969 238,296,324 Advances during year ended 30th June, 1970- New loans 15,000,000 Loan flotation expense-new and renewal loans 162,078 15,162,078

253,458,402 Deduct-Repayments during the year (increase in Commission's equity in National Debt Sinking Fund) 2,360,029

Balance at 30th June, 1970 $251,098,373

Victorian Government advances are repaid over periods of 53-58 years through annual contributions to the National Debt Sinking Fund, including those paid by the Commonwea th Government.

Sinking Fund requirements in respect of both Inscribed Stock and Debentures and Victorian Government Advances are met from the depreciation provision. The remainder, by far the larger part of depreciation moneys, is invested in fixed assets.

E. GENERAL RESERVE

$ Balance at 30th June, 1969 29,127,152

Add-Contributions by the Commonwealth Government, etc., to the repayment of Victorian Government Advances less charges in connection with the repayments levied by the National Debt Sinking Fund 521,214

Balance of Income transferred from Revenue Account tor year ended 30th June, 1970, and used for capital works 2,939,939

Balance at 30th June, 1970 $32,588,305

F. CAPITAL COMMITMENTS

Outstanding contract commitments tor capital expenditure at 30th June, 1970, not taken up in the accounts are estimated at $115m. {1969 $142m.).

50 Appendix 5

Electricity Consumer Statistics<~> (a) AGGREGATES FOR ALL BRANCHES 1948-1970

kWh Sold per Estimated Number of Consumers Income I GWh Sales Consumer (Average) Population (excl. (excl. Year of Area Total , Bulk Bulk All Number Ended of Supply Corn- classes 1 Supplies) Supplies) Corn- Consumers of Farms 30th June (thousands) Domestic Industrial mercial except Bulk $ Domestic Industrial mercial (excl. Bulk Supplied Supplies) Supplies) --- 1948 1,300 300,671 14845 39,544 355,255 10,178,614 1,004·546 1,127 32,880 3,102 2,891 13,181 1949 1,353 315,191 16,200 40,539 372,131 12,575,922 1,146·161 1,333 33,039 3,373 3,151 14,419 1950 1,414 331,506 17,476 41,813 390,998 14,411,632 1,252·030 1,521 32,352 3,533 3,281 15,741 1951 1,496 353,239 19,160 43,065 415,674 17,885,832 ',436·485 1,553 32,226 3,791 3,565 17,572 1952 1,574 376,977 21,285 44,527 443,004 23,404,184 1,556·046 1,495 29,145 3,736 3,627 19,953

1953 '.651 399,171 23,228 46,334 468,951 29,757,576 1,676·881 1,579 27,621 3,942 3,575 22,326 1954 1,753 426,461 25,882 49,410 501,982 34,288,696 1,946·706 1,739 29,761 4,285 4,001 27,082 1955 1,841 451.223 28,218 52,582 532,257 38,092,812 2,205·611 1,889 30,982 4,614 4,274 30,131 1956 1.949 475,192 30,549 55,877 561,862 43,938,354 2,506·237 2,098 32,009 4,966 4,583 32,734 1957 1.977 498,528 33,339 58,750 580,868 51,570,580 2,710·569 2,235 31,044 5,173 4,700 35,852 1958 2,044 522,120 36,074 61,476 619.925 56,274,772 2,926·790 2,333 31.105 5,334 4,839 38,999 1959 2,099 546,880 38,496 64,025 649,658 64,161,076 3,166·302 2,474 31,055 5,648 4,987 41,748 1960 2,177 571,869 40,872 66,914 679,917 70,562,706 3,437·026 2.584 32.415 5,949 5,168 44,079 1961 2,195 598,265 44,473 69,360 712,363 76,642,644 3,737·943 2,741 32,105 6,500 5,364 46,838 1962 2,24$ 623,443 47,396 72,062 743,176 79,206,706 3.874·107 2,699 31,279 6,644 $,323 49,506 1963 2,301 649,226 50,849 74,663 775,020 88,798,258 4.430·631 2,881 35,570 7,145 5,830 52,985 1964 2,358 673,107 54,214 76,643 804,253 98,987,436 5,200·941 3,049 43,449 7,648 6,590 56,412 1965 2,421 704,155 58,423 79,188 842,062 110,636,962 5,867·026 3,214 47,815 8,144 7,120 60,415 1966 2.469 732,311 62,355 81,378 876,345 120,1 03,279 6,178·525 3,293 46,392 8,694 7,186 54,001 1967 2,518 760,756 66,572 83,405 911,036 129,207,355 6,646·402 3,433 46,763 9,297 7,441 67,608 1968 2.574 788,407 70,283 85,432 944.434 140,721.640 7,040·641 3,474 46,905 9,833 7,583 70,610 1969 2,640 820,165 73,286 87,765 981,535 155,686,760 7,424·033 3,750 44.422 10,797 7,714 72,202 1970 2,688 849,028 75,623 89,599 1.014,572 164,894,064 7,965·464 3,850 46,336 11,276 7,978 73,137

(b) INDIVIDUAL BRANCHES-1969 AND 1970

• kWh Sold per Estimated Number of Consumers Income GWh Consumer (Average) Population 1 (excl. Sales Number of Area Bulk (excl. All of Farms Branch of Supply Corn- ro.t:~ses Supplies) Bulk Corn- Consumers Supplied (thousands) Domestic I Industrial ] mercial except $ Supplies) Domestic Industrial rnercial (excl. Bulk Bulk Supplies) Supplies) - Metropolitan 1970 1,216 370,257 10,075 31,334 411,711 76,711.232 3,626·958 3,991 151,235 14,622 8.930 578 1969 1,204 359,728 9,837 30,965 400,575 73,162,563 3,411. 279 3,935 143,574 13,801 8,639 591 Barwon 1970 156 43,031 2,029 4,563 49,639 13,048,943 989·264 3,178 403,939 10,147 20,187 1.882 1969 154 41,800 1,918 4,482 48,215 12.316,842 918·507 3,078 392,937 9,955 19.257 1,886 Eastern Metro. 1970 518 178,558 9,955 13,911 202,462 31,391,559 1,477·866 4,401 51,048 12,667 7,529 8,771 1969 500 167,046 9,221 13,154 189,459 28,796,465 1,335·772 4,259 50,107 12,097 7,267 8,817 Gippsland 1970 188 56,543 12,324 8,001 77,002 10,200,050 446·868 3,322 14,699 8,061 5,869 13.203 1969 184 55,229 12,100 7,828 75.190 10,096.523 450·975 3,210 16,652 7,953 6,093 13,117 Mallee 1970 38 12,506 2,347 1,967 16,830 2,197,162 90·342 3,133 14,275 9,502 5,434 3,872 1969 38 12,276 2,192 1,956 16.434 2,048,860 82·687 2,978 13,303 9,022 5,095 3,749 Midland 1970 54 17.620 3,219 2,583 23,453 2,605,905 111·142 2,987 12,691 7,211 4,812 3,953 1969 52 17,049 3,079 2,563 22,721 2.437,546 102·118 2,806 11,804 7,171 4,548 3,877" Mid-Western 1970 89 28,068 3,446 3,891 35,428t 4,085,857 169·081 2,750 21,495 9,072 5,071 4,100+ 1969 88 26,425 2,706 3,670 32,823 3.544,187 148·723 : 2,627 21,021 8,778 4,932 3,358 North-Eastern 1970 169 56,102 12,715 9,181 78,042 11,278,160 492·959 3,777 14,240 11,263 6,396 13,562 1969 165 54.693 12,551 8,895 76,182 10,502,138 450·895 3,645 12.752 10,863 6,000 13,288 Northern 1970 91 31,936 5,827 5221 43,009 4,999,049 208·483 3,401 10,763 7,199 4,887 7,017 1969 89 31,412 5,732 5,227 42,397 4,747,738 193·749 3.285 9,761 6,770 4,613 7,034 South-Western 1970 123 38,412 10,190 5,939 54,573t 6,398,673 275·753 3,670 8,725 6.129 4.928 11,250t 1969 121 38,921 10,753 6,044 55,751 6,169,325 261·443 3,561 8,069 6,218 4,739 12,079 Wimmera : 1970 46 15,895 3,496 3,008 22,423 1,977,474 76· 748 3,187 2,906 5,392 3.467 4,679 1969 45 15,586 3,197 2,981 21,788 1,764,473 67·885 3,015 2,491 5,167 3,259 4,406" -···· TOTAL 1970 2.688 849,028 75,623 89,599 1,014.572 164,894,064 7,965·464 3,850 46,336 11,276 7,978 73,137 1969 2,640 820,165 73,286 87,765 981,535 155,686,760 7,424·033 3,750 44.422 10,797 7,714 72.202

J; These figures do not include allowances for unread meters. *131 farms were transferred from Midland Branch to Wimmera Branch on 1st July, 1968.

t 2,204 consumers (including 713 farms) were transferred from South~ Western Branch to Mid-Western Branch on 24th May, 1970.

51 Appendix 6 Electricity Sales and Income 1948-1970t

Sales-GWh Income

Per kWh Sold (cents) Year Ended 1 Bulk Public Commer- 30th June Domestic Industrial Traction Total Total All Con- Supplies" Lighting dal ( $) Corn- sumers Domestic Industrial merc:ial <;:~p~~~

--~····

1948 506·780 18·106 331·357 467·063 66·900 121·120 1,511·326 12,939.444 1 ·262 0·725 1·569 1·013 1949 563·296 18·607 410·607 513·763 68·181 135·003 1,709 ·457 16,154,718 1·286 0·813 1·728 1·098 1950 613·552 14·253 491·743 545·656 54·998 145·380 1,865·582 18,610.296 1·286 0·875 1·779 1 ·151 1951 656·488 17·982 531·083 590·953 135·548 160·919 2.092·973 22,932,102 1·401 0·949 1·817 1·245 1952 679·665 20·451 545·271 590·626 236·265 163·433 2,235·711 29,651,504 1·663 1·163 2·140 1·504

1953 729·369 21·228 613·203 615·330 248·115 179·005 2,406·250 38.151,182 1·960 1 ·413 2·561 1·774 1954 844·749 22·508 719·398 733·991 265·443 205· 366 2,791 ·455 43,952,112 1·939 1 ·403 2·591 1·762 1955 955·610 23·832 827·244 840·015 280·117 234·403 3,161 ·221 49,228,660 1 ·843 1 ·398 2·590 1 ·728 1956 1,058·551 25·824 971·290 942·514 297·839 268·770 3.564·788 56,772,000 1·846 1 ·460 2·699 1·753 1957 1,132·597 28·193 1,088·486 992·422 304·291 297·177 3,843·166 67.263,810 1·915 1 ·690 3·123 1·903

1958 1,238·337 30·423 1,189·402 1,082·613 304·448 319·904 4,165·127 73,990.082 1·898 1·713 3·218 1·923 1959 1,327·463 33·609 1,323·230 1,161 ·891 294· 162 354·597 4.494·952 83,942,026 1 ·973 1·826 3·313 2·026 1960 1 .444·529 36·217 1,445·900 1.287·870 277·276 389·763 4,881· 555 92,710.616 1·998 1·839 3·321 2·053 1961 1,544·699 38·804 1,604·675 1,374·529 275·795 444·140 5,282·642 100,198,848 1·978 1 ·833 3·279 2·050 1962 1,573·765 42·225 1,648·538 1,439·128 274·104 470·112 5,447·872 103,248,750 1·978 1 ·811 3·253 2·044

1963 1,740·744 43·692 1,834·813 1,754·411 272·019 525·696 6,171·375 115.398,440 1·968 1·730 3·235 2·004 1964 1,818·664 45·545 2,014·204 2,282·394 279·721 579·077 7,019·605 127.105.602 1 ·951 1·559 3·204 1·903 1965 2,006·601 47·434 2,214·840 2,698·709 270·156 635·887 7,873·627 142,630,006 1·962 1·516 3·241 1·886 1966 2,176·238 48·305 2,366·693 2,802·937 262 ·061 698·529 8,354·763 155,633,036 2·016 1·566 3·254 1·944 1967 2,497·308 49·367 2,560·989 3,017·303 253·041 765·702 9,143·710 167.478,130 2·002 1·575 3·215 1·944

1968 2,675·706 51 ·671 2,692. 624 3.221 ·693 244·029 830·624 9,716·347 182,230,140 2·035 1 ·633 3·290 1 ·999 1969 3,130·349 54· 933 3.014·230 3,188·620 231·338 934·912 10,554·382 201,258,347 2·091 1·744 3·317 2·097 1970 3,104·609 59·045 3,214·003 3,460·801 232·274 999·341 11,070·073 211,423,291 2·075 1 ·704 3·300 2·070

t These f!gures do not include allowances for unread meters. • Includes interchange to N.S.W. and sales to the Snowy Mountains Scheme

Appendix 7 Electricity- Generation and Disposition (GWh)

Year ended 30th June

1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 I I Generation (including Purchases)

Generated .. 12,629.7 11,942.4 10,962.6 10.296.3 9,339.1 8,253.0 7,564.2 6,881.7 6.491.5 6,258.0 Used in power stations 904.7 868.4 816.1 783.1 742.9 614.8 564.7 515.9 480.6 420.5 Sent out .. .. 11,725.0 11,074.0 10,146.5 9.513.2 8.596.2 7.638.2 6.999.5 6,365.8 6,010.9 5,837.5 Purchased from other bodies .. 824.8 925.3 972.4 912.5 942.0 1.421.7 1.102.7 841.7 397.6 349.0

------~~- Total .. 12,549.8 11.999.3 11,118.9 10.425 7 9,538.2 9,059.9 8,102.2 7,207.5 6.408.5 6.186.5 I Disposition Transmission losses 834.9 803.8 766.0 696.1 635.4 627.2 579.8 I 544.6 I 449.3 480.3 Works usage .. 187.0 178.7 181.7 187.9 183.8 181.5 177.2 166.4 164.2 162.2

Distribution losses and unread meters 457.8 462.4 454.9 398.0 364.2 377.6 325.6 325.1 347.1 261.4 Sales to other bodies • .. 3,104.6 3,130.3 2.675.7 2.497.3 2,176.2 2,006.6 1,818.7 1,740.7 1,573.8 1,544.7 Retail sales 7.965.5 7.424.1 7,040.6 6,646.4 6,178.6 5,867.0 5.200.9 4.430.7 3,874.1 3,737.9

Total .. .. 12,549.8 11,999.3 11,118.9 10.425.7 9,538.2 9,059.9 8,102.2 7,207.5 6.408.5 6,186.5

• Including bulk supplies and interchange to New South Wales.

52 Appendix 8 State Generating System

(a) TOTAL INSTALLED PLANT CAPACITY MW Manufacturer's maximum continuous rating of plant installed at 30/6/70 2,912.815 Add-Available from Hume Power Station .. 25.000 Available from Snowy Scheme 608.000

Total 3,545.815

(b) GENERATORS INSTALLED AT POWER STATIONS AT 30th JUNE, 1970

Maximum i Power Station Set No. Make Continuous Year Installed Rating

STEAM- MW Hazelwood ...... 1 & 2 Associated Electrical Industries 200·000 1964, 1965 3 to 7 Parsons 200·000 1966, 1967. 1968, 1969, 1970 1.400·000

Yallourn ...... 7 to 10 '} MO

546 ·000

Yallourn Briquette Factory .. .. 1 General Electric 1 ·500 1923 2&3 English Electric 10 ·000 1931(2)

21 ·500

Newport ...... A2• & A4• 30·000 1943, 1951 1 & 2 15 ·000 1923(2) 4 30·000 1945 5 to 7 l}t"'""' 30·000 1946, 1948, 1950 8 Brush Ljungstrom 18 ·000 1944

228·000

Morwell .. . . 1 20·000 1958 .. .. Metropolitan Vickers 2 to 4 I} 30·000 1958, 1959(2) 5 60·000 1962

170·000

Richmond ...... 2 Brown Boveri 38 ·000 1952

Geelong "B" ...... B1 to B3 Westing house 10·000 1953, 1954(2)

30·000 i Ballarat "B" ...... B1 to 64 Westing house 5·000 1954(2), 1953(2)

20·000

Red Chffs .. C.. C1 & C2 Westing house 5 ·000 1954(2)

10 ·000

Spencer St. (Melbourne City Council) 6 Parsons 5·500 1935 7&8 A.S.E.A. 6·875 1939(2) 9 & 10 Parsons 15 ·000 1949. 1954 11 & 12 30·000 1953, 1959

109 ·250

• 25-cycle

53 ... Continued

Maximum Power Station Set No. Make Continuous Year Installed Rating

~··

MW INTERNAL COMBUSTION- Electric Construction Co. 1 ·850 1957(3) Red Cliffs "B" ...... B1 to B3 (Sulzer Engine) ---- 5·550

HYDRO-

McKay Creek (Kiewa) .. . . 1 to 6 Metropolitan Vickers 16·000 1960(6)

West Kiewa ...... 1 to 4 Metropolitan Vickers 15 ·400 1956, 1955(3) (Boving Turbine) Clover ( Kiewa) ...... 1 & 2 English Electric 13·000 1944,1945

183·600

Eildon ...... 1 & 2 British Thomson-Houston 60·000 1957,1956 (Boving Turbine) 3&4 Brown Boveri (Boving Turbine) 8 ·000 Re-installed 1954(2)

Rubicon ...... 1 & 2 4·550 1928(2) Lower Rubicon ...... 1 l Westinghouse J (Boving Turbine) 2·700 1928 Royston ...... 1 0·840 1928 Rubicon Falls ...... 1 A.S.E.A. (Boving Turbine) 0·275 1926 ---·-- 148 ·915

Cairn Curran ...... 1 Boving 2·000 1960

-····--- Overall Total 2,912 ·815

54 {c) BOILERS INSTALLED AT POWER STATIONS AT 30TH JUNE, 1970

Rated Working Total Steam [ Evaporative Pressure of Temperature Power Station Boiler No. Make Capacity of each Boiler Including Year Installed each Boiler lb (gauge) Superheat lb per hour per sq. in. Deg. F.

Hazelwood .. 1 to 7 Babcock & Wilcox 1,650,000 1,600 1,055 1964, 1965, 1966, 1967' 1968, 1969, 1970

Yallourn .. .. C1 to C6 I 200,000 645 840 1955{2), 1956,1957, 1954{2) ~John Thompson D1 to D6 J 200,000 645 840 1958{2), 1959{2), 1958{2) E1 & E2 Babcock & Wilcox 950,000 1,600 1,060 1962, 1961

Yallourn Briquette Factory .. .. 1 to 4 I 18,000 260 650 1924{4) rBabcock & Wilcox 5 J 33,500 650 750 1928 6 to 9 John Thompson 58,000 650 750 1931 {4)

Newport .. .. A1MtoA4M International Combustion 187,500 400 780 1952,1951, 1943{2)

6 to 10 60,000 270 750 1939(5) 1John Thompson 11 to 18 J 160,000 620 820 1945{2), 1947,1948, 1950{3), 1949

Morwell .. .. 1 to 8 Mitchell Engineering 235,000 1,300 932 1960{2), 1961 (2), 1959{2), 1958(2)

Richmond,, .. Velox Nos. 1 & 2 Brown Boveri 165,500 650 850 1953, 1952

Geelong .. . . B1 to B3 Combustion Engineering 110.000 625 825 1953, 1954{2)

Ballarat .. .. B1 to B4 Combustion Engineering 70,000 430 760 1954(2), 1953{2)

Red Cliffs .. .. C1 & C2 Combustion Engineering 70,000 430 760 1954

Spencer Street '' 10, 12, 14,16 I 55,000 160 570 1937, 1939,1940,1936 (Melbourne City B1 & B2 I 150,000 275 775 1954, 1955 ~John Thompson Council) .. C1 I 300,000 620 820 1953 C2 J 270,0JO 600 825 1959

55 Appendix 9 Generation of Electricity

Electricity Commission of Victoria Interconnected System

• Spencer Street Station Yallourn• Morwell Hazelwood Newpott Richmond (Melbourne Geelong Ballaratt City Council)

M.D. M.D. M.D. M.D. b M.D. ~-~- M.D. ____Y_e __ "_'----!---G--W--h--I---M-W---I-- ..G ...... W ...... h--·I--M--W·---I--G--W-h---I-----M--W ______G_W __ h--II---M-W---i--G--~-Ah- ..-SI . __G_W __ h_I ___ M__w ___ ,___ G_w __ h __ l __ m_s_~-~-d--l-----_-1 __ ~·-~~~d

Operation Operation Operation Operation Station "A" Station ~·· .;,;)~.<:wl;'u commenced commenced commenced commenced acquued and operated as acquired 15.6.24 7.12.58 1.10.64 12.10.23 reconditioned. part of State 1 .9.30 and and Newport "A" Restarted system from retired retired acquir•d 21 .1 .51 6.5.29 1.1.41 1.7.66 18.12.61 and retired 27.11.68

1925-26 143·6 37·500 46·0 16·000

1926-27 240·3 61·000 45·4 19·800 1927-28 321·1 68·500 54·3 20·800 1928-29 305·7 64·000 49·0 20·000 3·5 15 000 1929-30 312·7 62·500 50·8 21 ·000 21·9 16·200 1930-31 257·9 63·000 38·4 19·800 26·6 15·520 20·5 5·570 1931-32 333·7 81·500 9·8 18·800 15·000 26·9 6·510 1932-33 400·8 90·600 2·8 14·400 15·360 27·1 6·560 1933-34 444·6 96·700 7·6 18·500 15·120 29·5 6•690 1934-35 322·8 95·500 54·0 18·200 15·500 30·8 6·980 12·7 3·711 1935-36 505·3 109·600 16·7 19·300 15·100 34·1 7·930 13·2 3·825 1936-37 549·4 123·600 27·2 19·000 15·400 32·1 7·930 12·5 3•750 1937-38 675·6 142·800 27·1 18·600 15·300 34·4 8·620 10·0 3·797 1938-39 717·0 138·400 23·9 19·600 15·200 38·0 9·230 9·4 2·716 1939-40 797·1 170·450 39·3 35·000 15·400 31·5 7·710 11·6 2·988 1940-41 961·0 173·150 44·6 45·300 15·360 16·0 26·000 21·7 10·050 14·3 3·820 1941-42 1,047·9 189·350 45·2 54·800 15·540 44·1 35·000 30·7 10·600 14·6 4·140 1942-43 1,130·9 188·400 45·8 63·000 15·600 55·4 33·000 34·3 11·800 15·0 5·960 1943-44 1.108·2 190·250 83·3 71·600 15·600 63·8 40·650 44·8 12·200 20·8 5·400 1944-45 1.154·6 188·300 92·1 89·500 15·530 59·3 35·070 38·8 11·200 18·9 5·000 1945-46 1,162·6 195·900 136·9 93·500 15·600 55·0 34·200 31·2 11·900 16·0 5·350 1946-47 1,206·9 189·780 181·6 88·000 23·5 15·520 51·1 29·820 26·9 11·800 18·0 5·150 1947-48 1,255·6 199·100 299·0 134·000 29·6 15·400 66·3 34·500 33·1 11·750 18·8 5·650 1948-49 1,323·5 195·500 513·6 138·000 26·1 15·500 77·0 35·220 32·9 11·800 18·8 5·850 1949-50 1,220·3 190·200 717·8 175·000 26·6 15·600 105·4 41·910 28·6 11·950 15·6 6·000 1950-51 1,271·4 191·000 990·5 242·800 19·5 15·000 105·6 38·700 30·6 11·400 16·7 6·100 1951-52 1,316·1 199·400 1,085·5 249·400 28·7 14·800 94·2 39·450 45·8 12·100 16·7 5·900 1952-53 1,359·4 205·500 1,205·2 305·000 72·2 52·000 93·6 35·400 46·1 12·000 22·5 6·000 1953-54 1.427·3 245·200 1,322·7 304·400 202·0 51·900 212·4 73·000 103·6 47·400 53·4 29·800 1954-55 1,701·6 264·000 1,249·9 303•000 175·2 52·000 306·6 83·000 182·0 47·200 99·2 31·850 1955-56 1,920·8 283·100 1,278·7 298·400 200·1 52·500 269·3 94·000 178·6 47·700 77·2 31 ·500 1956-57 2,117·6 316·100 1,408·7 316·400 206·4 52·000 273·0 95·000 200·2 46·800 57·8 31·900 1957-58 2,186·5 337·500 1,517. 6 303·200 212·1 53·000 260·0 94·000 211 ·8 48·400 61·5 31·200 1958-59 2,777·0 410·600 158·4 63·000 1,272·8 301 ·400 147·4 53·500 286·5 120·000 149·7 49·000 51·8 30·800 1959-60 2,951-7 413·900 496·6 100·000 1,182·5 286·800 180·5 53·500 352·6 125·000 148·7 48·400 57·6 26·000 1960-61 2,951·8 518·600 700·7 115·000 1,325·5 278·200 75·2 53·400 242·2 118·000 136·9 47·600 69·3 25·600 1961-62 3,646· 3 629·600 809·7 127·000 1,119·2 268·000 21·1 44·500 154·8 90·000 75·5 35·000 67·2 21·500 1962-63 4,141·2 640·500 1,010·8 182·000 901·7 264·600 23·2 39·000 180·5 90·000 41 ·7 32·400 4·6 21·000 1963-64 4,296·1 645·000 1,157·4 178·000 1,052·1 273·400 70·8 39·500 372·1 101 ·000 53·3 36·700 11·3 25·700 1964-65 4,429·6 661·000 1,055·7 175·000 735·6 410·000 857·2 273·400 42·9 39·500 255·2 101·000 42-4 37·300 14·4 25·800 1965-66 4,423·6 629·900 1,055·3 172·000 2,280·6 426·000 751·9 258·400 49·6 39·200 225·4 101·000 29·8 34·700 6·7 25·600 1966-67 4,242·0 604·000 1,102·5 180·000 3,438·4 )·000 703·1 275·800 53·7 39 200 152·7 101·000 18·8 36·300 8·1 25·200 1967-68 3,779·0 629·300 1,233·2 183·000 4,686·6 \~:~~~ 575·1 239·000 46·8 39·300 56·9 90·000 34·9 31·400 7·6 21·400 1968-69 3,896·0 626·700 1,175·0 183·000 5,838·1 I!·~~~~~~ 324·8 250·800 17·7 39·000 55·6 90·000 8·9 38·500 2·9 25·000 1969-70 3,115·9 573·000 1,166·8 182·000 7,410·2 11,463.000 232·3 190·000 30·2 39·000 59·6 90·000 3·6 31·000 2·6 20·400

• Including Briquette Factory. t Including Bendigo, acquired 1/7/34, closed down 31/12/37. r.p kWh: Hume and Snowy entitlements, interchange from N.S.W. and purchases from Alc:oa of Australia Ptv. Ltd. {Anglesea). Phosphate Co. of Australia (Geelong), Tumut River County Councll, Electricity Trust of South Australia. Cresco Fertilisers Ltd. (Portland) and Radio Australia (Congupna). M.O.: Victoria's firm entitlement from the Snowy Mountains' Scheme plus half the capacity of Hume Power Station. NOTE -In addition, 677 l

56 ... Continued.

State Electricity Commission of Victoria I I Interconnected System i I Other Stations- Other Shepparton, Mildura, Red Cliffs, Under· Total Warrnamboot Hamilton. Total takings Hamilton, Horsham, Eildon~Rubicon, Kiewa Purchased Total Hors ham and Milduta, Cairn Curran from Other Interconnected Murtoa Red Cliffs and Bodies q, System Ararat : M.D. M.D. M.D. M.D. MW M.D. M.D. MW MW MW GWh GWh GWh GWh GWh GWh Year GWh sum- GWh MW MW sum- coinci- sum- mated mated dent I mated ~ i 1- _[ I Operation Eildon-Rubicon Hamilton commenced operation commenced acquired Shepparton commenced 1 9.44 1.7.46 7.3.51 14.3.28 Mildura Wa rrnambool Cairn Curran acquired 7.4.52 operation 1.10.53 Hamilton and commenced 189·6 50·000 Red Cliffs 189·6 333·8 523·4 1925-26 Horsham 11.1160 commenced connected to operation State System 285·7 76·000 16.1.54 285·7 302·1 587·8 1926-27 irom 3.255 4·8 11·500 380·2 87·500 Horsham 380·2 252·3 632·5 1927-28 and 1 .3.58 65·3 16·310 423·5 95·500 acquired 423·5 248·5 672·0 1928-29 respectively 77·9 19·300 463·3 103·160 1.6.55 463·3 245·0 708·3 1929-30 Horsham ceased 120·9 23·100 464·3 109·013 Mwtoa 464·3 211·1 675·4 1930-31 operation acQuired 31.10.58 and 1.3.56 Hamilton 122 4 23·400 518·5 116·959 ceased 518·5 194·7 713·2 1931-32 3.9.59 111 ·1 23·400 564·3 123·404 operation 564·3 197·9 762·2 1932-33 Mildura and 101·0 22·800 605·3 127·621 2.3.58 605·3 206·2 811 ·5 1933-34 Red Cliffs 155·3 25·300 632·1 141·993 632·1 235·3 867·4 1934-35 connected to 134·7 25·400 733·8 158·862 733·8 226·9 962·7 1935-36 State System from 16.11.62 Mildura 141·4 25·490 787·9 173·300 787·9 233·9 1,021·8 1936-37 retired 85·6 25·090 856·9 181·847 856·9 240·4 1,097·3 1937-38 7.2 63 103·2 24·300 918·2 198·000 918·2 240·2 1,158·4 1936-39 Shepparton 149·5 25·400 1,045·2 218·600 1,045·2 227·5 1.272·7 1939-40 retired 97·8 20·800 1,176·6 261·820 1.176·6 222·5 1,399·1 1940-41 11.5.64 Warrnambool retired 133·4 25·600 1,351·1 297·696 1,351 ·1 202·3 1,553·4 1941~2 30.9.67 156·2 26·100 1,476·2 319·300 1,476·2 188·1 1,1\64·3 1942~3 Ararat 130·4 25·700 1,495·8 328·000 1,495·8 193·0 1,688·8 1943-44 acquired 30.6.69 101·1 25·500 18·7 24·000 1,523·7 351·600 1.523·7 207·4 1,731 ·1 1944~5 •etired 29.9.69 134·3 25·650 51·4 26·000 1,620·5 377·100 1,620·5 202·8 1,823·3 1945-46

144·7 25·850 61·5 26·700 1,714·2 364·750 2·8 1·000 1,717·0 208·9 1,925·9 1946-47 H>1·8 25·850 68·3 26·400 1.932·5 449·500 3·6 1·140 1,936·1 252·3 2,188·4 1947-48 139·1 25·550 44·4 28·000 2,175·4 436·930 4·5 1 ·290 2,179·9 254·6 2,434·5 1946-49 129·2 26·050 46·8 28·500 2.390·3 504·090 5·2 1 ·382 2,395·5 260·5 2,656·0 1949--50 0·8 1·663 146·0 26·050 48·2 28·000 2,692·3 497·370 5·8 1·488 2.635·1 158·2 2,793·3 1950-51

5·4 4·083 160·6 26·150 65·8 28·000 2,818·8 533·370 6·6 1·580 2,825·4 59·0 2,884·4 1951-52 12·3 12·000 168·2 25·950 66·7 28·000 3,046·2 602·310 7·0 1·800 3,053·2 64·5 3,117·7 1952-53 30·2 15·230 92·6 26·950 62 3 28·000 3,506·5 701·650 12·800 3,535·7 50·3 3,586·0 1953--54 34·6 17·240 141·5 31·250 77·8 61 ·000 3,968·4 836·020 13·720 4,003·9 45·5 4,049·4 1954-55 32·0 17·630 171·1 31 ·170 288·2 90·000 4,416·0 897·190 14·670 4,462·4 43·4 4,505·8 1955-56

35·4 17·600 212·5 133·500 228·3 90·000 5·8 12·000 4,745·7 943·330 0·0 16·405 4,795·7 43·1 4,838·8 1956-57 44 6 19·240 333·7 133·500 '!754 90·000 93·9 25·500 5.097·1 1,067•450 54·4 (7·200 5,151·5 43·6 5,195·1 1957-58 37·5 18·790 264·1 141 ·500 233 0 90 000 154·7 26·500 5,537·9 1,137·140 548·1 16·100 5,586·0 44·2 5,630·2 1958--59 24·6 17·200 261 ·5 134·500 193·6 120·000 217·6 122·600 6,067·5 1,312·600 51·4 13·900 6,118·9 44·6 6,163·5 1959--60 17·2 14·450 344·1 140·500 340·8 184·000 349·0 131 ·500 6,552·7 1,320·300 54·3 16·650 6,607·0 43·6 6,650·6 1960-61

3·7 13·650 279·0 135·450 258·0 196·000 397·6 240·500 6.832·1 1,391 ·900 16·900 6,889·1 40·4 6,929·5 1961-62 8·9 31·780 223·6 137·500 323·3 208·000 841·7 247·000 7,701·2 1,669·700 16·400 7,723·4 40·9 7,764·3 1962-63 7·8 8·380 247·3 140·620 296·0 212·000 1.102·7 254·100 8,666·9 1,739·000 8,666·9 36·8 8,703·7 1963--64 5·5 10·050 416·1 140·700 398·4 210·000 1,421·7 233·200 9,674·7 1,963·000 9,674·7 32·0 9.706·7 1964-65 3·2 10·150 269·0 139 850 244·0 208·000 942·0 307·500 10,281·1 2,013·000 10,281·1 31 ·4 10 312·5 1965-66

6·5 18·650 243·4 139·690 327·1 208·000 912·5 454·000 11,208·8 2.171·000 11,208·8 11,232·0 1966 67 1·5 15·150 338·4 134·250 202·6 208·000 972·4 500·000 11,935·0 2.332·000 11,935·0 11.955·7 1567-68 0·7 7·000 226·0 139·600 396·7 197·000 925·3 526·000 12,867· 7 2.429·000 12,867·7 13·9 12,881·6 1968--69 5·2 18·500 265·0 142·000 338·3 209·000 824·8 593·000 13,454·5 2,536·000 13.454·5 0·2 13,454·7 1969-70 --.. ·-

57 Appendix 10 Load Factors and Fuel Used (a) LOAD FACTORS AT POWER STATIONS (%) (Generated Basis)

Interconnected System

• I Year Ended Ya!lourn Spencer St 30th June (including Morwell Hazel wood Newport I Richmond (Melbourne City Geelong Briquette Council} Factory)

i

1939 58·3 - - 13 ·9 20 ·1 47·0 1944 65 ·9 - - 13·2 32·5 17 ·9 41 ·8 1949 76 ·0 - 42·5 19 ·1 25·0 31 ·8 1954 65·5 49·6 44·4 33·2 24·9 1959 77·2 62·5 48·2 31 ·5 27·3 34·9 1964 75·8 74·0 43·8 20·4 41 ·9 16 ·5 1965 76·5 68·9 53·0 35·8 12 ·4 28·8 13 ·0 1966 80·2 70·0 61 ·1 33·2 14 ·5 25·5 9·8 1967 80 ·1 69·9 67·2 29 ·1 15 ·6 17·3 5·9 1968 68·4 76·7 61 ·0 27·4 13 ·6 7·2 12 ·6 1969 75 ·0 73·3 62·8 15 ·5 5·2 7·0 2·6 1970 67·4 73·2 66·5 14 ·2 8·8 7·6 1 ·8

(b) FUEL USED AT POWER STATIONS (tons)

Station Type of Fuel 1969-70 1968-69 1967-68 1966···67

Vallourn (incl. Briquette Factory) .. Brown Coal 6,211,341 8,250, 986 8.491,770 9.438,658 Briquettes 33,659 31.491 20,875 32.357 Morwell ...... Brown Coal 2.411,256 2,348,165 2,541,650 2,325.647 Briquettes Oil 892 954 965 946 Hazelwood ...... Brown Coal 9,587.590 7.447,537 6,260,860 4,704,831 Briquettes 43,841 28,979 20.945 26,128

Newport ...... Brown Coal - - -~ - Briquettes 170.484 226,853 380.448 471,814 Black Coal - 10,703 28,857 18.414 Oil 3,576 1,294 1,641 2,031 Richmond ...... Briquettes - - Oil 9,191 5,320 14,194 16,011 Spencer Street (Melbourne City Council) .. . . Briquettes 3,863 3,975 Black Coal - Oil 20,136 17.430 16,505 44,351 Coke - - - - Geelong "A"t and "B" . . .. Brown Coal - - - - Briquettes 2,825 6.434 23,399 13.457 Ballarat "A"t and "B" .. .. Briquettes 1,171 2,349 5,977 6,694 Oil 417 64 31 Warrnambool§ .. Oil 126 746 Other Thermal Stations (Retired Briquettes or Reserve) ...... Oil 1,399 257 355 1,338

Summary ...... Brown Coal 18,210.187 18.046,688 17.294,280 16.469,136 Briquettes 251,980 296,106 455,507 554.425 Black Coal -- 10,703 28,857 18.414 Oil 35,611 25,319 33,786 65.454 Coke -

t"A" Station retired 117/66. t"A" Station retired 18/12/61. §Station retired 30/9/67. Calorific values (Btu/lb. (gross)) :-Brown Coal-3,700 (Yallourn). 4.150 (Morwell), 5,150 (Yallourn North); Briquettes-9,500; Black Coal- 1 0,000 (Wonthaggi), 12,000 (Maitland); Oil-18,500; Coke-11,000.

58 . . . Continued.

Interconnected System Other Stations

Shepparton, Warrnambool. Eildon- Total Ballarat Hamilton, Aubicon. Kiewa Hume Snowy Interconnected Mildura and Year Ended Horsham, Milduta, Cairn Curran I System Red Cliffs 30th June Red Cliffs and Ararat

39·5 - 48·5 - - - 51 ·8 - 1939 43·9 - 57·8 - - - 51 ·2 - 1944 36·7 62·2 18 ·1 - 56·0 - 1949 20·5 22·6 39·2 25·4 - 56·5 26·0 1954 19 ·2 24·5 21 ·3 30·2 52·2 55·4 34 ·1 1959 5·0 10·6 19 ·9 15 ·9 31 ·8 23 ·1 56·7 1964 6·4 6·2 33·8 21 ·7 60·4 41 ·4 56·3 1965 3·0 3·6 22·0 13 ·4 27·4 27·8 58·3 - 1966 3·7 4·0 19·9 17 ·9 41 ·4 21 ·5 58·9 - 1967 4·0 1 ·4 28·7 11 ·1 31 ·8 17 ·3 58·3 - 1968 1 ·3 1 ·1 18 ·5 23·0 32·0 15 ·8 60·5 - 1969 2·0 3·7 21 ·3 18 ·5 60·8 10·0 60·6 - 1970

... Continued.

1965-66 1964-65 1963-64 1962...{)3 1 961--<>2 1960-61 1959...{)0

9,806,933 9,914,900 9,783,087 9,456,738 8,936,768 7,851,598 8,189,868 37,989 25,390 27,496 35,239 17,197 9,443 6,170 2,372,063 2,395,817 2,596,103 2,340,104 1,958,807 1,762,784 1,034,718 - 9 62 109 184 288 194 806 851 656 922 986 1,538 792 3,189,430 970,406 commenced operation 1 164 12,493 16,547 I{ 41,547 188,265 71,748 85,597 354,798 633,881 527,801 511,507 612,435 585,505 740,816 701,999 262,452 14,700 60,202 20,183 15,036 19,709 52,332 94,646 2,319 4,662 7,545 3,386 1,307 6,617 58,458 - - - 167 1.139 3,437 15,235 13,356 21,612 7,079 6,415 22,325 53,292

13,953 23,318 26,518 39,270 38,343 30,285 6,211 - - 21 138 216 1,546 61,566 68,723 103,492 41,552 33,173 64,135 109,078 - 48 - 81 - 1,965 - - - 354 123,055 20,936 29,736 36,023 28,943 51,501 94,108 34,978 5,911 11,915 9,377 4,018 49,922 27,106 1,420 1 1 15 249 312 11,860 20,133 710 1,206 1,784 1,031 542 3,071 2,763 - - 16,730 39,218 38,582 1,939 75 79 43 1,859 2,257 2,751 20,902

15,368,426 13,322,670 12,567,455 11,868,590 10,981 '172 9,969,534 9,981,522 619,083 618,422 711,911 709,814 937.348 902,950 316,801 14,700 60,202 20,204 15,036 19,847 52,548 96,192 80,712 88,878 135,147 56,078 44,992 112,297 265,418 48 - 81 1,965

59 Appendix 11 Transmission and Distribution Systems

Increase during year ended 30/6/70 Total at 30/6/70 Description and Voltage Route Circuit Cable Route Cucuit Cable Miles Miles Miles Miles Miles Miles ~-- -~- ············- OVERHEAD LINES Hazelwood to Keilor ...... 500 kV 113.0 113.0 1,356.0 Khancoban to Dederang ...... 330 kV 141.0 141.0 846.0 Dederang to South Morang ...... 330 kV 280.0 280.0 1,680.0 Kiewa area ...... 220 kV 12.0 12.0 35.0 Kiewa to Dederang to Shepparton .. 220 kV 140.0 140.0 420.0 Kiewa to Eildon to South Morang .. .. 220 kV 147.0 294.0 912.0 South Morang to Thomastown .. .. 220 kV 4.9 9.8 59.0 Thomastown to Brunswick ...... 220 kV 6.2 12.0 37.0 Thomastown to Ringwood to Rowville .. 220 kV 24.0 48.0 144.0 Thomastown to Templestowe to Rowville .. 220 kV 24.0 48.0 144.0 Thomastown to Keilor ...... 220 kV 21.0 42.0 125.0 Keilor to Brooklyn ...... 220 kV 6.0 9.2 18.0 61.0 Keilor to West Melbourne ...... 220 kV 7.5 15.0 90.0 Keilor to Geelong ...... 220 kV 83.0 83.0 248.0 Rowville to Malvern . .. .. 220 kV 9.2 18.0 55.0 Geelong to Terang ...... , . 220 kV 84.0 84.0 252.0 Geelong to Ballarat ...... 220 kV 43.0 43.0 130.0 Ballarat to Bendigo ...... 220 kV 60.0 60.0 179.0 Ballarat to Horsham ...... 220 kV 111.0 111.0 666.0 111.0 111.0 666.0 Ballarat to Terang .. .. 220 kV 72.0 72.0 432.0 Bendigo to Kerang to Red Cliffs .. .. 220 kV 220.0 220.0 1,320.0 Bendigo to Shepparton ...... 220 kV 72.0 72.0 218.0 Brooklyn to Yarraville .. .. 220 kV 1.7 3.4 20.0 Yallourn to Hazelwood ...... 220 kV 9.9 20.0 59.0 Morwell to Hazelwood .. .. , . 220 kV 2.7 5.4 16.0 Yallourn to Rowville ...... 220 kV 132.0 264.0 791.0 Rowville to Richmond .. .. 220 kV 16.0 33.0 196.0 Rowville to Springvale to Heatherton .. 220 kV 9.7 19.2 86.0 Templestowe to Doncaster ...... 220 kV 3.6 7.2 22.0 Hazelwood to Rowville ...... 220 kV 70.0 140.0 421.0 Hazelwood area ...... 220 kV 2.0 2.0 11.0 4.0 4.0 22.0 West Melbourne to Fishermen's Bend 220 kV 1.6 3.2 9.6 Templestowe to Kew .. .. 220 kV 7.7 15.0 92.0 Brooklyn to Ballarat ...... 66 kV 65.0 65.0 195.0 Ballarat area ...... 66 kV 12.0 17.0 69.0 Brooklyn to Geelong .. .. 66 kV 44.0 44.0 132.0 Geelong area ...... 66 kV 4.8 9.6 30.0 Kiewa area ...... 66 kV 4.6 4.6 14.0 Morwell area ...... 66 kV 6.0 6.0 18.0 Eildon to Rubicon 'A' .. .. 66 kV 8.6 8.6 26.0 Rubicon 'A' to Thomastown. .. .. 66 kV 53.0 106.0 319.0 Yallourn to Morwell ...... 66 kV 9.4 19.0 56.0 Yallourn to Warragul ...... 66 kV 18.0 36.0 108.0 Kiewa area ...... 22 kV 7.8 7.8 23.0 Morwell area ...... 22 kV 0.5 0.8 2.3 Ballarat area ...... 22 kV 6.5 6.5 39.0 Yallourn area ...... 11 kV 2.2 3.1 9.5 Morwell area ...... 11 kV 2.2 3.3 9.9 Eildon area ...... 6.6 kV 0.5 0.5 1.5 Hazelwood area ...... 6.6 kV 4.7 4.7 14.2 Main Metro. Transmission Lines .. .. 66 kV 3.0 3.0 12.0 153.0 198.0 653.0 Main Metro. Transmission Lines .. .. 22 kV 224.0 229.0 670.0 Main Metro. Transmission Lines .. .. 6.6 kV 6.9 6.9 21.0

Electricity Supply Branches ...... 66 kV 152.8 156.7 434.5 1,974.0 2,128.4 6,919.3 22 kV 1,075.6 2,853.9 24,166.6 60,425.3 12.7 kV 499.8 499.8 15,893.2 15,893.2 11 kV 14.5 104.7 471.0 1,469.3 6.6 kV 52.9 ~159.9 330.7 917.4 5.3 kV -14.0 ~42.2 Low Voltage 309.1 1,506.3 14,214.3 55,706.2 Latrobe Valley (Works) ...... 22 kV 0.8 0.8 2.6 6.6 kV 0.9 0.9 3.1 50.5 51.1 154.8 1.1 kV (d.c.) -0.9 ~0.9 ~0.9 17.1 18.2 20.8 Low Voltage 2.5 ~2.5 ~ 11.1 17.9 17.9 69.5

Summary ...... 500 kV 113.0 113.0 1,356.0 330 kV 421.0 421.0 2,526.0 220 kV 113.0 113.0 683.0 1,408.9 1 916.2 7,261.6 66 kV 155.8 159.7 446.5 2,352.4 2.642.2 8,539.3

• 268.8 272.7 1,129.5 4,295.3 5.092.4 19,682.9

Route Miles Cable Miles Route Miles Cable Miles

~--···· 22 kV 1,075.6 2,853.9 24,406.2 61,162.2 12.7 kV 499.8 499.8 15,893.2 15,893.2 11 kV 14.5 104.7 475.4 1,488.7 6.6 kV 52.0 156.8 393.3 U08.9 5.3 kV 14.0 ~42.2 1.1 kV (d.c.} ~0.9 ~0.9 17.1 20.8 Low Voltage 306.6 1,495.2 14,232.2 55,775.7

1,829.6 4,753.7 55,417.4 135.449.5 ... Continued.

Increase during year Total at 30th June, 1970 ended 30th June, 1970 I Description

Route Miles Cable Miles Route Miles Cable Miles

UNDERGROUND CABLES 66 kV ...... 29·37 29·37 38 ·70 38·70 22 and 20kV .. >...... , . 8·28 9·60 235·27 237·76 11, 7 ·2, 6 ·6, 3 ·3 and 2 ·2 kV . ,. . ' . . . . 1 ·92 -2·80 408·31 433 ·33 ,, Supervisory '. .. '' . . .. '' 33·73 33·73 749·42 749·42 Low voltage ...... 15 ·44 17 ·59 161 ·37 171 .75 ; I 88·74 87·49 1,593 ·07 I 1,630 ·96

Number Capacity kVA Number I Capacity kVA I ! SUBSTATIONS i Auto-transformation stations ...... 2 1,950,000 4 3,644,000 Terminal substations ...... 2 520,000 25 6,453,750 ., Zone substations .. . ' '' '' 6 389,075 158 5,811,715 Distribution substations ...... 2,903 181,450 61,985 3,479,693 Latrobe Valley (Works) . . . ' . . .. 4 265 142 39,873

2,917 3,040,790 62,314 19,429,031

61 Appendix 12 Brown Coal and Briquette Production (Tons)

YaUourn and Morwell Open Cuts Ya!lourn North

Financial Year Production Distribution Production (3) I Yallourn Morwell Power Stations Briquette Facts. Power Stns. & Wks.

Prodn. commenced Developmental Coal August 1924 Winning commenced October 1955 1925-26 689,267 336,147 353,120 175,010 114,565

26-27 860,474 438,654 421,820 307,601 257,177 27-28 1,159,983 669,530 490.453 319,656 286,455 28-29 1,660,698 1,131,060 529,638 41,072 16,889 29-30 1,767,261 1,124,836 642,425 43,361 18,007 30-31 1,850,849 956,890 893,959 9,494 6,426

31-32 2,563,405 1,274,908 1,288,497 Closed Sept. 1930 32-33 2,567,712 1,355,886 1,211,826 33-34 2,692,874 1,438,929 1.253,945 34--35 (1) 1,737,718 912,769 824,949 (2) 252,924 252,898 35-36 2,988,430 1,584,858 1,403,572

36-37 3,099,784 1,689,523 1,410,261 37-38 3,597,048 1,993,371 1,603.677 38-39 3,643,490 2,096,169 1,547,321 39-40 3,944,515 2,315,108 1,629,407 40-41 4,485,241 2,820,059 1,665,182 Re-opened Sept. 1941

41-42 4,702,725 3,096,351 1,606,374 32,538 3,638 42-43 4,978,415 3,344,238 1,634,177 39,610 482 43-44 4,829,481 3,215,266 1,614,215 86,724 46,221 44-45 5,249,308 3,527,060 1,722,248 47,063 505 45-46 5,448,626 3,525,235 1,923,391 49,237 282

46-47 5,617,533 3,662,805 1,954,728 133,198 3,558 47-48 5,994,707 3,763,828 2,230,879 197,629 3,340 48-49 6,235,611 4,035,435 2,200,176 471,873 102,272 49-50 6,404,059 4,075,075 2,328,984 764,131 334,400 50-51 6,056,331 3,969,509 2,086,822 690,425 377,568

51-52 6,480,723 4,151,742 2,328,981 1,007,213 630.488 52-53 6,390,288 4,204,197 2,186,091 1,181,652 726,201 53-54 6,718,750 4,379,280 2,339,470 1,262,094 742,154 54-55 7,371,144 4,845,476 2,525,668 1,391,031 795,318 55-56 7,937,769 14,694 5,423,923 2,528,540 1,549,946 858,926

56-57 8,209,806 55,233 5,846,196 2,418,843 1,594,510 839,949 57-58 7,714,688 607,726 5,893,318 2,429,096 1,647,553 888,354 58-59 9,710,662 333,068 7,585,682 2.458,048 1,457,134 731,478 59-60 10,911,827 1,013,756 8,540,394 3,385,189 1,323,913 643,362 60-61 11,864,704 2,515,773 8,984,938 5,395,539 840,908 358,774

61-62 12,456,478 3,298,318 10.299,287 5,455,509 486,618 83,118 62-63 12,892,693 3,873,916 11,262,394 5,504,215 477,736 100,630 63-64 13,488,000 4,080,103 11,838,889 5,729,214 597,164 188,485 64-65 13,944,456 4,597,514 12.775,929 5,766,041 459,826 37,198 65-66 13,765,815 6,872,487 14,933,546 5,704,756 428,689 306

66-67 13,080,772 8.479,607 16,077,999 5,482,380 422,596 9 67-68 11,979,824 10,122,668 16,883.211 5,219,281 418,243 22 68-69 11,889,642 10.117,377 17,645,253 4,361.766 458,737 30 69-70 10,104,906 12,287,469 17,923,591 4,468,784 396,571 1

(1) Yallourn Open Cut flooded 1/12/34. Production recommenced 9/3/35, with full output by May, from upper levels of the open cut. (2) Yallourn North Open Cut operated from 26/12/34 to 31/5/35, whilst Yallourn Open Cut flooded.

62 ... Continued

Open Cuts Briquette Factories Financial Distribution Distribution Year Production (4)

Public Gas & Fuel Corpn. Power Stns. & Wks. Industrial Domestic

60,445 86,576 23,415 63,161 1925-26

50.424 109,535 49,905 59,630 26-27 33,201 121,828 51,370 70.458 27-28 24,183 141,064 62,503 78.561 28-29 25,354 161,708 103,432 58,276 29-30 3,068 225,473 25,555 136,532 63,386 30-31

321,741 69.471 168,715 83,555 31-32 307,952 46,007 179,090 82,855 32-33 323,613 47,950 189.594 86,069 33-34 26 288,240 10,838 178,862 98,540 34-35 357,601 83,290 180,206 94,105 35-36

364,695 68,177 192,718 103,800 36-37 416,545 94.445 220,521 101,579 37-38 399,924 64.666 230,295 104,963 38-39 428,389 69,358 281,779 77,252 39-40 433,756 59,489 334,882 39,385 40-41

28,900 413.450 96,550 303,995 12,905 41-42 39.128 414,959 100,321 302,511 12,127 42-43 40,503 416,715 106,755 298,870 11,090 43-44 46,558 431,344 127.403 292,605 11,336 44-45 48,955 493,144 213,098 268,450 11,596 45-46

129,640 490,338 308.469 169,254 12,615 46-47 194,289 545,236 381,829 149,706 13,701 47-48 369,601 558,899 400,182 143.896 14,821 48-49 429,731 588,564 445,918 127.807 14.839 49-50 312,857 511,404 382,305 112,885 16,214 50-51

376,725 568,252 424,362 123.429 20.461 51-52 455,451 544,973 371,581 142,736 30,656 52-53 519,940 587,252 385,061 156,376 45,815 53-54 595,713 630,579 421,430 159,128 50,021 54-55 691,020 634,099 335,605 193,879 104,615 55-56

734,860 19,701 617,989 197,525 213.495 149.122 57,847 56-57 710,673 48,526 626,173 153,311 215.244 131,530 126,088 57-58 671,859 53,797 642,590 127.442 234,853 154,219 126,076 58-59 623,116 57.435 974,670 339.787 246,614 253.229 135,040 59-60 421,418 60,716 1,806,619 976,015 372,873 330,786 126,945 60-61

337,949 65,551 1,819,937 912,934 418,893 338,195 149,915 61-62 305,072 72,034 1,805,347 729,890 484.470 413,706 177.281 62-63 323.448 85,231 1,882,626 702,560 511.624 479.726 188,716 63-64 350,240 72,388 1,892,759 633,301 552.417 536,247 170,794 64-65 349,517 78,866 1,882,814 676,330 534,625 508,624 163,235 65-66

348,375 74,212 1,820,120 580,803 549,067 512,095 178,155 66-67 333.423 84.798 1.744,948 495,624 540,353 501.464 207,507 67-68 365,547 93,160 1.471,328 137,540 564.456 543.021 226,311 68-69 363,112 33,458 1,540,718 329,987 605,070 522,986 82,675 69-70

(3) Yallourn North transferred from Mines Department 1/4/24. Yallourn North Extension commenced 9/7/56. (4) Yallourn Briquette Factory commenced Dec. 1924. Morwell Briquette Factory commenced 19/12/59.

63 Appendix 13 Electricity Supply Undertakings (Municipal and Private)

Municipality No. of or Centre Supply Authonty System of Supply Population Consumers TarHfs

METROPOLITAN Supplied in Bulk by State Electricity Commission

City of Melbourne Melbourne City Council { D.C., 230-460v. 75,000 30,202 (excl. Flemington) A.C., 3 ph., 240-415v. } Box Hill and City Box Hill City Council .. .. A.C., 3 ph., 240-415v. 136,000 43,560 of Nunawading Brunswick Brunswick City Council A.C., 3 ph., 240-415v. 52,000 17,733 1 Coburg .. Coburg City Council .. A.C., 3 ph., 240-415v. .. 71,000 20,850 Doncaster and Doncaster and Templestowe A.C .. 3 ph., 240-415v. 47,000 15,527 I Templestowe City Council .. .. l Standard tariffs for the State Footscray & part of Footscray City Council .. A.C., 3 ph., 240-415v. 83,000 25,881 City of Sunshine r'Ym•m opply '" "" '"~ "'"' Heidelberg (excl. Heidelberg City Council .. A.C., 3 ph., 240-415v. .. 79,000 23,912 G reensborough) North cote .. Northcote City Council. .. A.C., 3 ph., 240-415v . 49,000 16,917 Port Melbourne .. Port Melbourne City Council .. A.C., 3 ph., 240-415v. .. 12,000 3,947 Preston .. . . Preston City Council .. A.C., 3 ph., 240-415v. 91,000 27,374 l Williamstown Williamstown City Council A.C., 3 ph., 240-415v. 30,000 9,884 J COUNTRY Bendoc .. Monaro County Council (NSW) A.C., 3 ph., 230-415v. .. 200 88 Monaro County Council rural tariffs.

Lighting Power

Mallacoota T. A. Davies .. .. A.C., 3 ph., 230-400v. 300 93 Do m. 20c to 18c Dom. 20c Com. 20c to 12c

NEW SOUTH WALES UNDERTAKINGS

During the year the Murray River County Council purchased from the State Electricity Commission of Victoria 18,208,900 kilowatt- hours.

Appendix 14 Electricity Supply Undertakings- State of Victoria CONSUMERS AND SALES-30TH JUNE, 1970

Consumers Retail Sales Estimated Supply Authority Population of Area Served • Percentage of Number Grand Total GWh ']-";,!.~'

State Electricity Commission of Victoria Metropolitan Branch ...... 1,216,000 411,711 32·92 3,626 ·958 34·85 Extra-Metropolitan Branches ...... 1.472,000 602,861 48 ·21 4,338 ·506 41 ·69

Total S.E.C. Retail Supply ...... 2,688,000 1,014,572 81 ·13 7,965-464 76·54

Other Metropolitan Undertakings (receiving bulk supply from State Electricity Commission of Victoria) .. .. 725,000 235.787 18 ·86 2 440 ·426 23 ·46

Total S.E.C. Supply ...... 3,413,000 1,250,359 99·99 10,405 ·890 100·00

Other Country Undertakings (Local) .. 500 181 0·01 0-446

Grand Total ...... 3,413,500 1,250,540 100·00 10,406·336 100·00

64 Appendix 15 Statistical Summary

STATE OF VICTORIA

1969-70 1968-69 CONSUMERS SUPPLIED State Electricity Commission retail supply 1,014,572 981,535 Other metropolitan undertakings (receiving bulk supply from S.E.C. of Victoria) 235,787 229,339

Total S.E.C. supply 1,250,359 1,210,874 Country undertakings (local) 181 171

~········--- TOTAL- VICTORIA 1,250,540 1,211 ,045

FARMS SUPPLIED 73,401 72,507 POPULATION OF SUPPLY AREA S.E.C. retail supply 2,688,000 2,640,000 Other metropolitan undertakings (receiving bulk supply from S.E.C. of Victoria) 725,000 715,000 ----- Total S.E.C. supply 3.413,000 3,355,000 Country undertakings (local) 1,000 1,000

TOTAL 3,414,000 3,356,000

POPULATION OF VICTORIA 3.443,900 3,384,100 (estimated) ELECTRICITY SALES RETAIL SUPPLY (GWh) S.E.C.-domestic 3,214.003 3,014.230 commercial 999.341 934.912 industrial 3,460.801 3,188.620

Total S.E.C. retail sales 7,965.464 7,424.033 Other metropolitan undertakings (receiving bulk supply from S.E.C. of Victoria) 2,440.426 2,330. 711

Total S.E.C. supply 10,405.890 9,754.744 Country undertakings (local) 0.446 12.947

TOTAL- VICTORIA 10,406.336 9,767.691

GIGAWATT-HOURS GENERATED (INCLUDING PURCHASES) Interconnected system 13,454.5 12,867.7 Country undertakings (local) 0.2 13.9

TOTAL VICTORIA 13,454.7 12,881.6 INSTALLED GENERATING CAPACITY OF POWER STATIONS AT 30TH JUNE, (MW) Interconnected system- Base load stations (Yallourn:j:, Morwell and Hazelwood) 2,137.5 1,962.5 Other thermal stations 440.8 440.8 Hydro stations 967.5 928.5

Total interconnected system 3,545.8 3,331.8 Country undertakings (local) 0.2 0.2

TOTAL- VICTORIA 3,546.0 3,332.0

MAXIMUM COINCIDENT DEMAND ON S.E.C. INTERCONNECTED SYSTEM (MW) 2,536.0 2,387.0 (1970 winter compared with 1969 winter) (23/6/70) (22/7 /69} t Including briquette factory generating plant.

65 Appendix 16 Standard Tariffs for the State System

DOMESTIC

Domestic Tariff 'GB' First 75 kWh/quarter 6.00 c/kWh Next 435 kWh/quarter 2.30 c/kWh Balance 2.10 c/kWh "' For domestic consumer<;: previously having room assessments of three rooms or less under the former two-part Residential Tariff "G.. the change to the Domestic ·'GS" block tariff will be graduated ovet the three-year period from 1st November. 1967, to 1st November, 1970.

Domestic, Better Electric Living Tariff 'GC' First 75 kWh/quarter 6.00 c/kWh Applicable to where the installation includes an electric Next 435 kWh/quarter 2.30 c/kWh refrigerator and a permanently wired range and water heater Balance 1.70 c/kWh

Water Heating-Night Rate Tariff 'I' 1.05 c/kWh

Storage Space Heating, or Combined Storage Space Heating and First 1200 kWh/quarter 1.05 c/kWh Storage Water Heating Tariff 'J' Balance 0.85 c/kWh

COMMERCIAL AND GENERAL

COMMERCIAL AND GENERAL NON-RESIDENTIAL

Commercial Lighting Tariff 'A' First 100 kWh/month 8.00 c/kWh Balance 7.40 c/kWh

Commercial Power and Heating Tariff 'C' First 200 kWh/month 4.85 c/kWh Option I Next 4,800 kWh/month 2.80 c/kWh Next 20,000 kWh/month 2.30 c/kWh Balance 2.05 c/kWh Option 11 7 a.m. to 11 p.m. Block rates as in Option I 11 p.m. to 7 a.m. 1.00 c/kWh Rental a month for each set of two-rate metering equipment $1.00/month

Commercial General Service Tariff 'E' First 100 kWh/month 8.00 c/kWh Option I Next 900 kWh/month 7.40 c/kWh Lighting, Power and Heating Next 1,000 kWh/month 4.85 c/kWh Next 3,000 kWh/month 4.25 c/kWh Next 20,000 kWh/month 2.30 c/kWh Balance 2.05 cjkWh Option 11 Power and Heating only-11 p.m. to 7 a.m. 1.00 c/kWh All other consumption Block rates as in Option I Rental for each set of two-rate metering equipment $1.00/month

Commercial (Non-residential) Low Voltage All-Purposes Maximum Demand Tariff 'V' Option I Demand Charge (indicators are reset monthly) $3.50/kW /month Energy Charge 0.80 c/kWh Minimum Demand Charge-200kW or half the stipulated rate of supply, whichever is greater Option 11 Demand Charge (indicators are reset monthly) Part A. Recorded between 7 a.m. to 7 p.m. Monday. $3.50/kW;month Tuesday, Wednesday, Thursday, Friday: Minimum Demand Charge-200kW or half the stipulated rate of supply, whichever is greater. Part B. For each kilowatt by which the maximum demand 95.00 c/kW/month recorded at any other time exceeds the maximum demand recorded during the periods prescribed under Part A. Minimum Demand Charge-100kW or half the stipulated maximum excess rate of supply, whichever is greater. Energy Charge 0.80 c/kWh

Commercial Range Tariff 'F' (Cooking) 2.21 c/kWh

Water Heating-Night Rate Tariff 'I' 1.05 c/kWh

66 continued

COMMERCIAL-RESIDENTIAL

Commercial-Residential Tariff 'G' Service Charge 19.00 c/room/month Energy 2.21 c/kWh Maximum overall rate 6.00 c/kWh

Water Heating-Night Rate Tariff 'I' 1.05 c/kWh

Storage Space Heating, or Combined Storage Space Heating and 1.05 c/kWh Storage Water Heating Tariff 'IS'

COMMUNITY SERVICE

Community Service Residential Tariff 'R' Service Charge 16.00 c/room/month Energy 2.00 c/kWh Maximum overall rate 6.00 c/kWh

Storage Space Heating, or Combined Storage Space Heating and Storage Water Heating Tariff 'VS' 0.95 c/kWh

Community Service General Tariff 'N' Option I First 10 kWh/month 6.00 c/kWh Next 190 kWh/month 4.30 c/kWh Next 4,800 kWh/month 2.50 c/kWh Balance 2.20 c/kWh Option 11 7 a.m. to 11 p.m. Block rates as in Option I 11 p.m. to 7 a.m. 0.90 c/kWh Rental for each set of two-rate metering equipment $1.00/month

Community Service Range Tariff 'W' Cooking 2.00 c/kWh

Community Service Water Heating-Night Rate Tariff 'V' 0.95 c/kWh

INDUSTRIAL

INDUSTRIAL-GENERAL

Industrial Lighting Tariff 'A' First 100 kWh/month 8.00 c/kWh Balance 7.40 c/kWh

Industrial Power and Heating Tariff 'C' First 200 kWh/month 4.85 c/kWh Option I Next 4,800 kWh/month 2.80 c/kWh Next 20,000 kWh/month 2.30 c/kWh Balance 2.05 c/kWh Option 11 7 a.m. to 11 p.m. Block rates as in Option I 11 p.m. to 7 a.m. 1.00 c/kWh Rental for each set of two-rate metering equipment $1.00/month

Industrial All-Purposes Tariff 'D' Option I First 100 kWh/month 8.00 c/kWh Next 400 kWh/month 7.40 c/kWh Next 4,500 kWh/month 4.60 c/kWh Next 20,000 kWh/month 2.30 c/kWh Next 100,000 kWh/month 2.05 c/kWh Balance 1.70 c/kWh Option 11 7 a.m. to 11 p.m. Block rates as in Option I 11 p.m. to 7 a.m. 1.00 c/kWh Rental for each set of two-rate metering equipment $1.00/month Minimum Charge $60.60/month (High voltage supplies-5% discount on total amount of bill.)

67 continued

Industrial Low Voltage All-Purposes Maximum Demand Tariff 'V' Option I Demand Charge (indicators are reset monthly) $3.50/kW/month Energy Charge 0.80 c/kWh Minimum Demand Charge-200kW or half the stipulated rate of supply, whichever is greater Option 11 Demand Charge (indicators are reset monthly) Part A. Recorded between 7 a.m. to 7 p.m. Monday, $3.50/kW/month Tuesday, Wednesday, Thursday, Friday: Minimum Demand Charge-200kW or half the stipulated rate of supply, whichever is greater. Part B. For each kilowatt by which the maximum demand 95.00 c/kW /month recorded at any other time exceeds the maximum demand recorded during the periods prescribed under Part A. Minimum Demand Charge-100kW or half the stipulated maximum excess rate of supply, whichever is greater Energy Charge 0.80 c/kWh

Industrial All-Purposes Maximum Demand Tariff 'M' Option I (High Voltage Supply from the Distribution System) Demand Charge (indicators are reset monthly) $3.17/kW/month Energy Charge- First 3 million kWh/month 0.57 c/kWh Next 12 million kWhjmonth 0.52 C/kWh Balance 0.44 c/kWh Minimum Demand Charge-500kW or half the stipulated rate of supply, whichever is greater. Option 11 (High Voltage Supply from the Distribution System) Demand Charge (indicators are reset monthly) Part A. Recorded between 7 a.m. to 9 p.m. Monday, $3.17/kW/month Tuesday, Wednesday, Thursday, Friday: Minimum Demand Charge-500kW or half the stipulated rate of supply, whichever is greater. Part B. For each kilowatt by which the maximum demand recorded 92.00 c/kW /month at any other time exceeds the maximum demand recorded during the periods prescribed under Part A. Minimum Demand Charge-250kW or half the stipulated excess rate of supply, whichever is greater. Energy Charge Block rates as in Option I Option Ill (High Voltage Supply from the Sub-Transmission System) Demand Charge (indicators are reset monthly) $3.17/kW /month Energy Charge Block rates as in Option I 5% Discount on total amount of each bill. Minimum Demand Charge of 20,000kW or half the stipulated rate of supply, whichever is greater.

Water Heating-Night Rate Tariff 'I' 1.05 c/kWh (not available with Industrial All-Purposes Tariffs 'D', 'M' and 'V').

INDUSTRIAL-FARMS

Farming General Service Tariff 'B' Option I First 30 kWh/quarter 8.00 c/kWh Next 570 kWh/quarter 4.85 c/kWh Next 14,400 kWh/quarter 2.80 C/kWh Balance 2.30 c/kWh Option 11 7 a.m. to 11 p.m. Block Rates as in Option I 11 p.m. to 7 a.m. 1.00 cjkWh Rental for each set of two-rate metering equipment $3.00/quar:er

Water Heating-Night Rate Tariff 'I' 1.05 c/kWh

MINIMUM CHARGES

For each account rendered-40 cents a month-except for Commercial All~ Purposes Tariff "V" and lndustlial All-Purposes Tariffs "0" ,"M" and "V" where amounts are stated.

68 /STATE ELECTRICITY COMMISSION OF VICTORIA"' [ ELECTRICITY SUPPLY

GENERATION, TRANSMISSION, SUB TRANSMISSION, HIGH \IOLTAGE DISTRIBUTION

MAL LEE 30 I h. JUNE 1~70

REFERENCE D GENERATING STATIONS - THE!j!MAL Cl GENERATING STATIONS- HYDRO D TERMINAL STATIONS TRANSMISSION LINES- 500 k\1 TRANSMISSION LINES- :510 kY TRANSMISSION LINES- 720kY TRANSMISSION AND SUB TRANSMISSION LINES-66kY DISTRIBUTION LINES- 22 kV & 12·7 kV Tronsmlnion and Dlslrlbullon llnGs Under Construction Are Represented By Broken lines @ ElfCTRICil'f SUPPLY BRANCH OFFICES [i) ElECTRICITY SUPPLY DISTRICT OFFICES ..... Q ElECfRICITY SUPPLY UNDERlAkiNG GENERATING OWN SUPPLY $ ELECTRICITY SUPP1 Y UNDERTAICINGS SUPPLIED IN BULK BY S.E.C.

J

Vl - ... -.....