To Accord Approval for the Capital Investment Plan for the FY 2019 – 20 for Rs.4493.09Crores, for FY 2020-21 for Rs.2737.31 Crores 1

Home , Ennore, TNEB, Vinnamangalam

TAMIL NADU ELECTRICITY REGULATORY COMMISSION (Constituted under section 82 (1) of the Electricity Act, 2003) (Central Act 36 of 2003)

PRESENT:

Thiru M.Chandrasekar .... Chairman and

Thiru K.Venkatasamy .... Member (Legal)

M.P. No.16 of 2019

Tamil Nadu Transmission Corporation Limited 144, Anna Salai Chennai – 600 002. … Petitioner (Thiru V.Anil Kumar, Standing Counsel for TANTRANSCO)

Dates of hearing :10.12.2019,17.12.2019, 28.1.2020,11.2.2020, 10.3.2020,2.6.2020,14.7.2020, 23.2.2021, 16.03.2021, and 30.3.2021

Date of Order : 15.06.2021

The Tamil Nadu Transmission Corporation Limited (hereinafter referred as

“TANTRANSCO” or “the Petitioner”) filed the Capital Investment Plan (hereinafter referred as “CIP) for the MYT Control Period from FY 2019-20 to FY 2021-22 in

M.P. No. 16 of 2019. The Petition came up for final hearing on 23.02.2021. The

Commission upon perusal of the above petition and other connected records and after hearing the submissions of the Petitioner, hereby makes the following order:

ORDER

1. Prayer of the Petitioner in M.P.No.16 of 2019:-

1.1The prayer of the petitioner is to accord approval for the Capital Investment Plan for the FY 2019 – 20 for Rs.4493.09Crores, for FY 2020-21 for Rs.2737.31 Crores 1

and for FY 2021-22 for Rs.4887.85 Crores and further to issue a statutory advice to the Government of Tamil Nadu, under sec 86 (2) of the Electricity Act 2003 to provide equity assistance to TANTRANSCO for promotion of investment in

Transmission sector in Electricity Industry.

2. Facts of the Case:

2.1 Tamil Nadu Transmission Corporation Ltd.,(TANTRANSCO) was incorporated on 15.06.2009 and the Certificate for commencement of business was obtained on 11.12.2009.The Tamil Nadu Transmission Corporation Ltd. is engaged in the transmission of power generated from the generating stations to distribution centers (under TANGEDCO) with the help of transmission network (GRID).

2.2 TANTRANSCO has been notified as a State Transmission Utility under section 39 of the Electricity Act 2003 and is acting as a Transmission Licensee also and has to comply with the duties specified in section 39 and 40 of the Electricity

Act 2003. Based on the additional capacity,location of generating stations and quantum and area of demand in the distribution side, TANTRANSCO has to plan and develop an efficient, coordinated, reliable and economical Transmission system for smooth flow of electricity from the generating stations to the load centres. Consistent augmentation and upgradation of existing network is required to ensure that adequate Transmission system is available with redundancy.

2.3 Regulation 17 of the TNERC (Terms and Conditions for Determination of

Tariff) Regulations, 2005 and regulation 3(v) of Terms and Conditions for determination of Tariff for Transmission/Distribution of Electricity (under MYT

framework) Regulations, 2009 specify that the licensee shall get the Capital

Investment Plan approved by the Commission before filing ARR and application for determination of Tariff. In accordance to the provisions in the Commission’s

Tariff Regulations on filing the Capital Investment Plan, TANTRANSCO hasfiled the detailed Capital Investment Plan for the MYT control period 2019-20 to 2021-22.

2.4 In the CIP filed on 3.12.2019,TANTRANSCO sought approval for Rs. 5917.46 crores,Rs.6855.51 crores and Rs.7038.87 croresfor FY20, FY21 and FY22 respectively. Commission in its daily orders dt.10.12.2019 and 17.12.2019 directed

TANTRANSCO to file additional affidavit specifying details regarding Government equity in the proposed plan, scheme wise expenditure with realistic data.

Commission also directed TANTRANSCO to upload the petition in public domain and invite comments from stakeholders and file along withreply to stakeholder comments. An additional affidavit was filed on 20.1.2020 where the capital expenditures for FY20,FY21 and FY22 were revised to Rs.4597.30 crores,

Rs.6743.72 crores and Rs.7029.31 crores. During the hearing on 28.1.2020,

Commission directed to furnish details of funding arrangements made for the schemes. During the hearing on 11.2.2020, Commission directed to file details of actual expenditure incurred upto January 2020 and that expected to be incurred until FY21. Details as directed by the Commission were filed by TANTRANSCO.

On 10.3.2020, Commissiondirected the petitioner to implead the Secretary to

Government,Finance Department serving a copy of the petition filed.

2.5 Due to outbreakof the coronavirus pandemic, the execution of schemes were not as planned. Commission on 2.6.2020 directed to filedetails as per actuals achieved for FY20 and revise the capital expenses for the next two years of

the control period. The capital expenditure was revised to Rs.4493.09 crores,

Rs.3281.14 crores and Rs.5847.80 crores for FY20, FY21 and FY22 respectively.

Details were filed and orders were reserved on 14.7.2020. The situation of covid19 persisted. After scrutiny of the petition, Commission aware of the slow status of progress, reopened the petition and directed TANTRANSCO to file a revised affidavit accounting for the actual expenditure and revise the phasing of capital expenditure and capitalization of the schemes. The petitioner has filed the revised capital expenditure plan as directed by the Commission.

3.Submissions of the Petitioner:-

3.1 As on 31.03.19, TANTRANSCO’s Transmission network comprised of 998 substations of voltage rating 66 KV and above and 34,275.701 CktKms of EHT

Lines. During the year 2018-19, as on 31.03.19, 37 nos. substations with a capacity of 2107 MVA, 1190.815 CktKms of EHT Lines and 93 nos. power transformers with a capacity of 1907 MVA towards additional/enhancement in the existing substations have been commissioned.

3.2 The following table presents the network details of TANTRANSCO as on

31.03.2019and Sub-Stations(SS)/lines commissioned during 1.4.2019 to 31.3.2020:

Voltage ratio Existing as on 31.3.2019 Commissioned during 01.4.2019 to 31.3.2020 Sub stations EHT lines in Sub stations EHT lines in Km Km 400 KV 015 4040.756 1 66.830

230 KV 104 10326.444 3* 248.362

110 KV 876 19225.501 46* 710.381

66 KV 003 683.00 - -

Total 998 Nos. 34275.701 50 Nos. 1025.573**

*Including new ratio introduced in the existing sub stations

**including lines erected under system strengthening

3.3In addition to the above, 65 nos. Power transformers with a capacity of 1597

MVA as additions/enhancementshave been commissioned. This apart,under

T&D,DDUGJY(DeendayalUpadhyaya Gram JyotiYojana),IPDS schemes, 82 nos.

33 KV sub stations with a capacity of 1040 MVA and 156 nos. of transformers

(new and enhancement) have been commissioned.

3.4 The capital expenditure incurred for transmission schemes during the FY

2016-17 was Rs.3816.76 Crores, FY 2017-18 was Rs.2823.03 Crores and FY

2018-19 was Rs.3949.35 Crores. Capital expenditure in actuals incurred during

2019-20 and 2020-21 is Rs.4493.09 crores and Rs.2370.87crores respectivelyand this is subject to audit.

3.5The following Table summarises the Capital Expenditure and Capitalisation of

Transmission Schemes for the Control Period from FY 2019-20 to FY 2021-22:

Capital Expenditure and Capitalisation proposed by TANTRANSCO (Rs. Crore)

Sl. Particulars Capital expenditure Capitalisation No. 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 I Sub-station works

765 KV sub stations 1934.65 467.75 452.12 0.00 0.00 2417.85

400 KV sub stations 290.30 559.30 1765.66 59.95 0.00 517.62

230 KV sub stations 450.07 249.07 358.69 296.41 310.12 471.51

110 KV sub stations 325.00 40.00 30.00 224.50 182.50 35.00

Sub-total(excluding JICA,KfW 3000.02 1316.12 2606.46 580.86 492.62 3441.98 and ADB) II Transmission Line works

765 KV, 400 KV, 230 KV and 110 KV Power Evacuation Lines – 765 KV, 388.00 65.37 87.14 30.00 40.00 229.88 400 KV,230 KV and 110 KV Improvement and Link lines -230 150.00 10.00 25.00 120.00 80.00 17.50 KV and 110 KV Sub-total 538.00 75.37 112.14 150.00 120.00 247.38

III Others

Enhancement/Additional Power 150.00 50.00 75.00 150.00 50.00 75.00 Transformers

TANTRANSCO building 24.74 6.18 0.00 0.00 28.46 28.46

JICA schemes 297.08 64.93 193.94 0.00 64.70 173.04

KfW schemes 241.00 220.00 300.00 525.40 956.35 252.08

ADB schemes 26.11 966.35 1421.47 0.00 0.00 243.39

Capacitor banks 12.54 3.51 - 8.78 8.78

Reactors 3.14 18.85 40.83 31.41 31.41

Quarters at Guindy and Korattur 2.00 3.00 5.00 10.00

SE/GCCs Office(Trichy and 2.00 3.00 3.00 1.00 1.00 6.00 Coimbatore)

Construction of Transformer repair 3.24 - - 0.00 2.62 2.62 bay at Arasur

Balance works of commissioned/on 193.22 10.00 130.00 154.58 46.64 106.00 going sub stations 110 KV and above Sub total 955.07 1345.82 2169.24 830.98 1189.95 936.78

TOTAL 4493.09 2737.31 4887.85 1561.84 1802.57 4626.14

3.6 Generation capacity:

3.6.1 The installed generation capacity of TANGEDCO as on1st April 2019 was

18,299.66 MW including Hydro, Thermal, Gas, Share from CGS, IPP,CPP and

Power purchase. The installed capacity of renewable energy sources was

12,179.65 MW. The addition in generating capacity has been planned by forecasting the increase in demand for power that approximately varies between

5% to6% per annum. The capacity addition planned up to FY 2022-23 for Thermal,

Hydro, Nuclear and Solar Projects is shown in the following table:

Capacity Addition Planned in Thermal, Hydro, Nuclear and Solar Projects

Sl. NAMEOF THE PROJECT ANTICIPATED CAPACITY No. PERIOD (MW)

1 Neyveli New TPP at Neyveli (Central) -2 x 500 FY 2019 – 20 500 MW (Unit-I) Sub Total 500

2 Neyveli New TPP at Neyveli (Central)-2 x 500 FY 2020 -21 500 MW (Unit-II) 3 NCTPP Stage III (1 x 800 MW) FY 2020 -21 800

Sub Total 1300

4 BhavaniKalpakkam FY 2021 -22 500 (PFBR)(Central)(1x500MW) 5 Ennore SEZ TPS (2 x 660 MW) FY 2021 -22 1,320

6 Udangudi Super Critical Thermal Power FY 2021 -22 1,320 Project-Stage-1 (2x660MW) 7 Kolli Hydro Electric project (1 x 20 MW) FY 2021 -22 20

Sub Total 3160

8 ETPS Expansion Project (1 x 660MW) FY 2022 -23 660

9 Uppur TPP (2x 800 MW) at Ramanathapuram FY 2022 -23 1,600 District 10 Kundah Pumped Storage Hydro Electric FY 2022 -23 500 Project (4x125)

11 Talibara Project (4x800 MW) of NLC as an FY 2022 -23 1,500 alternate of Sirkazhi T.P.P. (Central) 12 NLC TPS II 2nd Expansion 2x660 MW FY 2022 -23 1,320 (Central) Sub Total 5,580

Total 10,540

3.7 Development of transmission infrastructure

3.7.1 The maximum demand met during the year 2018-19 was 15,847 MW.

During the year 2019–20, all time high demand met was 16,151 MW on

03.04.2019. The projected demand for 2019 – 20 is 16,751 MW and the demand is expected to grow to 18,646 MW by FY 2021-22. The transmission planning plays a vital role in any Transmission Utility to ensure that adequate and reliable transmission system is in place to cope with the capacity addition in generation and the demand for power in the distribution side. The revised Tariff Policy dated

January 28, 2016, has stated the objective of ensuring optimal development of transmission network ahead of generation with adequate margin for reliability and to promote efficient utilization of generation and transmission assets.

3.8. Keeping in view the above objective, the transmission planning is carried out considering the following factors subject to technical, economic and environmental considerations:-

 Generation capacity addition

 Demand growth

 Present transmission constraints and congestion

 Reliability

 Redundancy for operational flexibility

 Line loss reduction

3.9 Transmission infrastructure proposed :

3.9.1 Establishment of 765/400 KV sub stations

3.9.1.1 Four nos. 765/400 KV sub stations at North Chennai, Ariyalur,Coimbatore and Virudhunagar are planned.

(i) North Chennai 765/400 KV GIS Pooling Station (3 X 1500 MVA):

This Sub station is to evacuate power from the TANGEDCO's upcoming thermal power project located in North Chennai and Ennore area. The power pooled from all the generating stations will be exported to Southern districts of Tamil Nadu by providing connectivity to Ariyalur 765 KV SS.Works are under progress for

Substation and associated lines and expected to be completed in FY22.

(ii) Ariyalur 765/400 KV SS (2X1500 MVA):

This sub station is proposed to transfer the power pooled at North Chennai 765 KV

Pooling Station and power sourced from other states through Thiruvalam PGCIL

765 KV SS to load centres by providing connectivity to the sanctioned Coimbatore

765 KV SS.400 KV DC line from Kayathar –Ottiambakkamvia Karaikudi-Pugalur-

Kalivanthapattu, for transfer of wind power from South to North of Tamil Nadu is proposed to be connected with Ariyalur 765 KV SS.Works are under progress for

Substation, and associated lines are nearing completion. The SS is expected to be completed in FY22.

(iii) Coimbatore 765/400 KV SS (2X1500 MVA):

The power pooled at North Chennal Pooling Station is to be transferred to

Coimbatore region through Ariyalur 765 KV SS. The proposed Coimbatore 765 KV

SS will provide connectivity with sanctioned Virudhunagar 765 KV SS,

Edayarpalayan 400 KV SS and Rasipalayam 400 KV SS.Upcoming and proposed

Renewable Energy(RE) power generation in Rasipalayam area are proposed to be evacuated through Rasipalayam 400 KV SS. It is also proposed for system strengthening in Coimbatore area.Land registration is under final stage. The substation is programmed to be commissioned during 2022-23.

(iv) Virudhunagar 765/400 /230 KVSS(2X1500 +2X500 MVA):

This sub station is proposed to evacuate power from TANGEDCO's upcoming thermal power projects located in Uppur (2x800 MW) and Udangudi. In addition to the above, RE power generation in Kayathar, Kamuthi, Thappagundu and

Thummakundu areas,existing, upcoming and proposed,are planned to be pooled at

Virudhunagar 765 KV SS at 400 KV level for transferring to load centre. Works for the sub station and 765 KV DC lines are under progress.The substation is programmed to be commissioned during 2022-23.

3.9.2 Establishment of 400/230 KV Substations

3.9.2.1TANTRANSCO has 16 Nos 400 KV substations in the State for transfer of bulkpower to the load centres at various locationsin the State. TANTRANSCO has programmed to establish 21 Nos 400/230 KV Substations in the upcoming years to cater to the needs of load growth, system strengthening and RE power evacuation in the State.

3.9.2.2TheThervoikandigai 400/230 KV SS is charged at 230 kV level on 15.04.16.

400 kV line worksare being delayed due to ROW issues. All efforts are being taken

to complete the line work early and to commission the Sub station.Thennampatti

400/230 KV SS is charged on 05.11.2019.

3.9.2.3Works are under progress for the 400 KV sub stations at Guindy

(GIS)Pulianthope(GIS) and Vellalaviduthy, Edayarpalayam,Taramani

(GIS),Ottapidaram, Korattur (GIS) and Parali. In the case of Guindy, sub station work is completed and charged at 230 KV level on 19.12.20 but the line works/cable laying are under progress. Works are to be taken up in FY 22 in the case of Samugarengapuram 400 KV SS where approval from MNRE is awaited and for Koyambedu 400 KV substations where land registration is under process.

3.9.3 Establishment of 230/110 KV substations

3.9.3.1As on 01.04.2019, TANTRANSCO has 104 nos. 230/110 KV Substations.

Schemes have been evolved for 34 nos. 230 KV sub stations to relieve congestion in the network and reduce the system losses and cater to load growth. 2 nos. 230

KV SS at Uddanapalli and Tirupur have been commissioned in 2019-20. In FY 21,

4 nos. 230 KV sub stations at Sankarapuram,Samayanallur,Shenbagapudur and

Singarapet have been commissioned. Above 50 % works have been completed in

8nos. 230 KV Sub stations namely TNEB(HQ GIS), Mambalam (GIS),

Thiruvanmiyur(GIS), Selvapuram,Thirupathur,Thuvakudy,Karuppur and Erode.

TNEB(HQGIS) and Thirupathur sub stations are expected to be commissioned in

FY21 and balance 6 nos. in FY22. Works have beenawarded for 7 nos 230 KV sub stations at Mambakkam, Vembakkam, Maraimalainagar, Kalivelampatty,

Nanguneri, Sathumadurai and Nallur. Tendering is under various stages for 13 nos.

sub stations proposed at Narimanam, Ganesh Nagar(GIS), Avadi, K.Pudur(GIS),

K.K

Nagar(GIS),Poolavadi,Ennore(GIS),Durainallur(PanjettyGIS),Rajagopalapuram(GIS

), Muppandal, Pallavaram(GIS),Thuckalay(GIS) and Saravanampatty(GIS).

Scheme wise details are annexed to the plan.

3.9.4Establishment of 110 KV Substations

3.9.4.1 120 Nos. 110 KV Substations were programmed to be commissioned in the control period on an yearly average of 40 nos. to improve quality of supply and provide reliable power to the consumers.These substations planned are to serve loadcenters, to reduce the overload in the existing substations, to improve the voltage regulation, to meet the EHT demand, to extend 33 kV source to 33 kV substations proposed etc.

3.9.5 Additional/enhancement of Power Transformers/Auto Transformers in existingsubstations

3.9.5.1 Additional power transformers and enhancement of the power transformers and Auto Transformers in the existing substations are also taken up to ensure optimum loading of the substations, provide adequate system support for load development in the area and to improve the quality of power supply.Furtherfor establishment of 33 KV Substations under DDUGJY and IPDS schemes, source

SS requires introduction of transformer ratio of 110/33 KV in the existing substation or enhancing the capacity of power transformer of 110/33 KV substation. These types of network additions are also taken care of.

3.9.6 Power evacuation, improvement and link lines System strengthening

3.9.6.1TANTRANSCO is taking all efforts to reduce the transmission losses by constantly upgrading the existing system, strengthening the existing aged transmission lines with higher capacity / HTLS Conductor etc., Conductor sizes for various voltage levels are standardized with Panther for 110 kV lines, Zebra for 230 kV lines etc.Old 110 kV and 230 kV lines with bunched conductors, DOG conductor etc., are being replaced in a phased manner. There will be saving in line loss relatively due to establishment of substations based on the load flow analysis.

Transmission Losses for the past 4 years are furnished below:

Sl.No Year Transmission Losses in %

1. 2015-16 4.11 2. 2016-17 4.08

3. 2017-18 4.02 4. 2018-19 3.97

It is proposed to bring down the losses further.

3.9.7 Schemes under KfW ,ADB and Other works:

3.9.7.1 Schemes under KfW Funding (Green Energy Corridor {GEC}-Phase-I) and GEC- Phase II.

(a) Ministry of New and Renewable Energy (MNRE) recommended assistance for a portion of creation of the transmission network infrastructure for Rs. 1,462.69 crores to Ministry of Finance/GoI. Project cost has been revised after inclusion of

GST to Rs. 2,049.392 crore. The schemes are being implemented with the

financial assistance of Rs.538.91 Crores as Grant under National Clean Energy

Fund (NCEF), as soft Loan 76 Million Euro from KfW German funding under Indo

German Bilateral Co operation and the balance as Equity by TANTRANSCO.

(b) Establishment of Thennampatty 400 KV SS, 400 KV DC line from

Thennampatty to Kayathar, 400 KV DC line from Rasipalayam to Palavadi, erection of 6 nos. 230 KV lines and augmentation of 17 nos. auto transformer capacity in 6 nos. existing 230 KV substations are covered under this funding. As on date of filing this petition, Thennampatty 400 kV SS, 400 kV DC line from Thennampatty to

Kayathar, 5 nos. 230 KV lines with a length of 389.779 kmsand 12 nos. 160 MVA

Transformers have been commissioned. Balance works under this funding are in progress and are expected to be completed during 2021-22.

(c)For availing MNRE Grant under Green Energy Corridor Phase – II, schemes comprising 1 no. 400 KV SS at Samugarengapuram, 3 nos. 230 KV substations at

Poolavady, Muppandaland Kongalnagaram and 400 KV DC line from Kamudhi to

Thappagundu at a total cost of Rs. 1609 crs. has been sent to CEA and MNRE for approval.CEA approval received for an amount of Rs.1355.14 Crs. and MNRE approval awaited.

3.9.7.2 Schemes under Japan International Cooperation Agency (JICA):

(a) Under the Official Development Assistance (ODA) Loan of JICA, funding assistance amounting to Rs.3572.93 crores have been sanctioned for establishing 5 nos. 400 KV substations and 12 Nos. 230 KV substations along with

associated transmission lines towards the total scheme cost of Rs.5,000 crores.

Out of 5 nos. 400 KV substations, 3 nos. 400 KV Substations at Karamadai, Manali

(GIS) and Sholinganallur have been commissioned. Works have been completed and back charged at 230 KV Level for Guindy 400 KV GIS and work awarded recently for Korattur 400 KV GIS . 400 KV UG Cable works are recently awarded and commenced for both Guindy (GIS) and Korattur (GIS).

(b) Out of 12 nos. 230 KV substations, 11 nos. 230 KV substations at Alandur

(CMRL), Karuvalur, Echur (Purisai), Kinnimangalam, Poiyur, AmbatturIIIrd Main

Road, R.A.Puram, Kumbakonam, CMRL Central, Tiruppur and Shenbagapudur have been commissioned. Works are under progress for the substation TNEB

(GIS) Head Quarters.

Packages at a cost of Rs. 1078.26 Crs. are excluded from JICA. To utilise the amount of excluded Packages beneficially, additional Scope of works for 30

Packages at a cost of Rs.1377 Cr. are proposed and it is under consideration by

JICA. The schemes under JICA Funding is expected to be completed by July’23.

3.9.7.3 Schemes under Asian Development Bank (ADB) Funding:

(a) To evacuate the electricity from new generation capacity additions including renewable energy in Southern districts and to strengthen the transmission connectivity between Southern and Northern ends of the proposed Chennai

Kanniyakumari Industrial Corridor (CKIC) by augmenting the 765 kilovolt (KV) and

400 kV network, it is proposed to establish Ottapidaram 400 KV SS and

Virudhunagar 765 KV SS along with the associated lines, at a total cost of Rs 15

4332.57 crore. Asian Development Bank (ADB) is funding for an amount of 451

Million USD for the project. This project is being supported by GoTN with a funding of Rs 1000 crores.

(b) Works are under progress in respect of Ottapidaram 400 KV SS and its associated 400 KV & 230 KV Lines, Virudhunagar 765 kV Substation and its associated 765 KV Line from Virudhunagar to Coimbatore and 400 KV line from

Kayathar to Virudhunagar. The schemes are expected to be completed during

2022-23.

3.10 Funding for the schemes

3.10.1 Equity

3.10.1.1There is no equity infusion from GoTN during FY 2016-17,FY 2017-18 and

FY 2018-19. However, TANTRANSCO has accounted a sum of Rs.6,05,89,73,930

/- as additions to equity during FY 2017-18 which represents book adjustment for additional allocation of shares to TANTRANSCO for the amount received by TNEB

Ltd. during 2010-11 due to change in Equity proportion in the Final Transfer

Scheme (GO No.49) against the Provisional Transfer Scheme (GO No.100).

3.10.1.2 As per Tariff norms, 30% of CAPEX has to be met through Equity.

For certain schemes under TNIPP, the GoTN is providing equity assistance to the extent of 90% of the scheme cost. The equity requirement from GoTN including

TNIPP, after adjusting MNRE, PSDF grants from GoI for the proposed CAPEX plan for FY 2019-20, FY 2020-21 and FY 2021-22 is Rs.1668.98 Crs, Rs.2369.90 Crs and Rs.2385.97 Crs. respectively.

3.10.2 Borrowed Funds

3.10.2.1 The fund for financing the transmission schemes are being raised from local financial institutions such as REC, PFC, NABARD, Banks and from external funding agencies such as JICA, KfW and ADB etc.

3.10.2.1 JICA funding was approved to a tune of Rs.3572.93 Crores with an interest rate of 0.5% per annum. For creation of transmission infrastructure for renewable energy for Rs.1593 Crores, financial assistance of 40% Grant under

National Clean Energy Fund (NCEF) by GOI for Rs.637.20 Crores, 40% as soft loan for Rs.637.20 Croresfrom KfW German funding under Indo German Bilateral

Cooperation and 20% as Equity by TANTRANSCO Rs.318.60 Crores is approved.

3.10.2.3 Further, Asian Development Bank (ADB), the funding agency has agreed to fund TANTRANSCO to the tune of USD 451 Million. Also funding is being tied up with REC/PFC for improvement works.

3.11 Issues involved in execution of work

3.11.1Delay is encountered in some of the schemes under execution by

TANTRANSCO.Thervoikandigai 400 KV Substation is charged at 230 KV Level on

15.04.16 due to non-completion of 400 KV line work due to RoW issues such as

Court cases/ Forest Clearance. Delay is also being experienced in some of the

Projects due to slow progress by the Turnkey Contractors. Review meetings at

Head Quarters and at field level are being conducted to sort out the issues and expedite the work.

3.11.2 The petitioner is paying crop compensation based on the rates assessed by revenue authorities for various types of crops damaged and various types of trees removed which are essentially required to have adequate vertical and horizontal clearances as prescribed by the Indian Electricity Rules. Also, as per the guide lines formulated by Ministry of power/GoI, G.O. (Ms) No. 63 dt 22.11.17, compensation at 85% of land value for tower base area and compensation towards diminution of land value in the width of Right of Way (ROW) corridor due to laying of transmission line subject to a maximum of 15% of land value is paid for transmission lines of 110 KV and above to new projectswith prospective effect.

3.11.3 Subsequently, vide Letter (Ms) No.41/A1/2018, dated :16.05.2018, from the

Principal Secretary to Government (FAC), addressed to the Chairman, Tamil Nadu

Transmission Corporation Limited, the procedure for private negotiation cases towards payment of Right of Way compensation have been issued as below:

“The orders issued in G.O. (Ms.) No. 63, Energy (Al) Department, dt.22.11.2017, to pay compensation towards damages in regards to Right of Way for transmission lines, as stipulated in section 67 &68 of the Electricity Act, 2003 read with section

10 & 16 of Telegraph Act, 1885 may be continued as it is. However, only in the case of acquiring Right of Way for transmission lines through private negotiation, which will avoid unnecessary litigation, as in the case of land acquisition, the negotiated value of land may be determined as per the Revenue and Disaster

Management Department, G.O.(Ms) No.281, dated 07.09.2017, which can then be adopted as the basis of compensation for such Right of Ways as suggested in the

G.O.(Ms) No.63, dt.22.11.17.”

3.11.4In respect of cable laying works, work is getting delayed in obtaining permission from Corporation, PWD, NHAI, Police Dept etc.. In view of the reasons stated above, there may be slippages in completion schedule and all efforts are taken by the petitioner at field level and at Head Quarters level to resolve the issues and commission the substations and lines at the earliest.

3.12Considering the above submissions, approval of the Capital Investment Plan for Rs.4993.09Croresfor FY 2019-20, Rs.2737.31Crores for FY 2020-21 and

Rs.4887.85Crores for FY 2021-22.is sought.Further, the petitioner has prayed to the Commission to issue a statutory advice to the Government of Tamil Nadu, under sec 86 (2) of the Electricity act 2003 to provide equity assistance to

TANTRANSCO for promotion of investment in Transmission sector in Electricity

Industry.

4.0 Legal Provisions:

4.1Relevant provisions of the Tariff Policy, Commission’s MYT Regulations,

Tariff Regulations applicable for approval of Capital Investment Plan are extracted below:

4.2 The relevant provisions of the Tariff Policy notified by Government of India on January 6, 2016 with respect to the CIP are reproduced below:

“ 5.3 Tariff policy lays down … …

a) Return on Investment … … … While allowing the total capital cost of the project, the

Appropriate Commission would ensure that these are reasonable and to achieve this objective, requisite benchmarks on capital costs should be evolved by the Regulatory

Commissions. b) to (f) … … … … g) Renovation and Modernization … … … A multi-year tariff (MYT) framework may be prescribed which should also cover capital investments necessary for renovation and modernization and an incentive framework to share the benefits of efficiency improvement between the utilities and the beneficiaries with reference to revised and specific performance norms to be fixed by the Appropriate Commission. Appropriate capital costs required for pre-determined efficiency gains and/or for sustenance of high level performance would need to be assessed by the Appropriate Commission. ……”

(emphasis added)

7.0 TRANSMISSION

The transmission system in the country consists of the regional networks, the inter-regional connections that carry electricity across the five regions and the State networks.

Development of the State networks has not been uniform and capacity in such networks needs to be augmented. These networks will play an important role in intra-State power flows and also in the regional and national flows. The tariff policy, in so far as transmission is concerned, seeks to achieve the following objectives:

1. Ensuring optimal development of the transmission network ahead of generation with adequate margin for reliability and to promote efficient utilization of generation and transmission assets in the country;

2. Attracting the required investments in the transmission sector and providing adequate returns.

7.1 Transmission pricing

(4) In view of the approach laid down by the NEP, prior agreement with the beneficiaries would not be a precondition for network expansion. CTU/STU should undertake network

expansion after identifying the requirements in consonance with the National Electricity

Plan and in consultation with stakeholders and taking up the execution after due regulatory approvals. For smooth operation of the grid, efforts should be made to develop transmission system ahead of generation.”

4.3Regulation 17 of the Terms and Conditions for determination of

TariffRegulations, 2005 (Tariff Regulations) specifies as under:

“17. Capital Investment Plan

(1) The licensee shall file a detailed Capital Investment Plan every year showing separately, ongoing projects that will spill into the year under review and new project

(along with justification) that will commence but may be completed within or beyond the tariff period.

(2) The Commission may consider the licensee’s investment plan for approval and for this purpose, may require the licensees to provide relevant technical and commercial details. The costs corresponding to the approved investment plan of a licensee for a given year shall normally be considered for its revenue requirement.

(3) In presenting the justification for new projects, the licensee shall detail the specific nature of the works and the results to be achieved. The details must be shown in physical parameter (e.g.) new capacity to be added, length of lines to be energised, number of sub-stations / Bays to be added, meters to be added, replaced, etc. so that it is amenable for physical verification. In case of significant shortfall in achieving physical targets, the Commission may require the licensee to explain the reasons, and may proportionately reduce the provision, including interest and return component made towards revenue requirement, in the next tariff proposal.

(4) The licensee may, at any time, during the tariff year, seek provision for additional

capital expenditure to meet natural calamities involving substantial investment and the

Commission shall examine and review these provisions in the manner as given in this regulation and approve their inclusion in the revenue requirement in the next period.

(5) The licensee shall get the Capital Investment Plan approved by the Commission before filing ARR and Application for determination of tariff.”

4.4 . Regulation 3 (v) of the Terms and Conditions for determination of Tariff for Transmission/Distribution of Electricity (under MYT framework) Regulations,

2009 (MYT Regulations) specifies as follows:-

“Chapter II, 3) v). Capital Investment Plan:

The licensee shall get the approval of the Capital Investment Plan for each year of the initial control period in accordance with the Regulation 17 of TNERC Tariff

Regulations. It may be ensured that the approval of the Commission is obtained before tariff filing under MYT framework. The capital investment plan shall have capitalization schedules for each year of the control period.

The source of finance to meet the capital expenditure in each year of the control period shall also be furnished along with Capital Investment Plan.”

5.0 Approach followed

5.1The Petition for approval of CIP for the Control Period from FY 2019-20 to

FY 2021-22 filed by TANTRANSCO was registered as M.P. No. 16 of 2019.

After preliminary verification, during the hearing on 10.12.2019, the Petitioner was directed to file additional affidavit specifying the details regarding the

Government Equity in the proposed investment plan and also specify the expenditure proposed to be incurred scheme wise with realistic data. On

17.12.2019, the petitioner was directed to consider realistic estimates, host the petition for obtaining stakeholders comments, and thereafter compile the comments and furnish to the Commission with details of works to be carried out, funding, besides furnishing separate reply to stakeholder comments.

Petitioner filed additional details on 20.1.2020,10.2.2020 and 9.3.2020 detailing the packages and funding from different agencies. In the hearing on

10.3.2020, petitioner was directed to implead the Secretary to Government,

Finance Department, Government of Tamil Nadu. On 2.6.2020, petitioner was directed to file a fresh affidavit incorporating actual expenditure incurred for the financial year 2019-20 and modify financial requirements for FY20-21 deducting proportional expenses taking into account the lockdown period caused by the covid 19 pandemic. As directed by the Commission, petitioner filed a revised petition detailing the expenditure incurred during FY20, the objectives and justification for the investment proposals on 23.6.2020.

Commission after analysing the proposals found that capital expenditure was on the higher side compared to the pace of works and certain discrepancies in funding and corresponding works. On 23.2.2021 Commission directed

TANTRANSCO to file the status considering actual spending as on date. The reply affidavit filed by TANTRANSCO has beenanalysed. The findings on the final proposals for the schemes for the Control Period from FY 2019-20 to FY

2021-22 and approval are rendered in the succeeding paragraphs.

6.0 Findings of the Commission:

6.1The petitioner has submitted scheme wise details for the control period FY

2019-20 to FY 2021-22 in accordance to the Commission’s Tariff Regulations.

Commission has conducted a detailed analysis of the schemes proposed.by

TANTRANSCO. In the process of scrutiny, additional details, clarification have

been sought from the petitioner. The schemes have been viewed based on

necessity of investment, comparison with previous capital investment plans

approved by the Commission, rate of progress of work, dates of

approval/sanctions obtained and the available funding and scope of tying up for

further resources and last but not the least the impact of the ongoing pandemic

caused by covid 19.

6.2 The capital expenditure and capitalization originally filed and further

revisions made based on subsequent directions by the Commission are as

follows:

Sl.No. Date of Capital expenditure Rs.in crores Capitalisation Rs.in crores

petition FY20 FY21 FY22 FY20 FY21 FY22

1. 3.12.2019 5917.46 6855.51 7038.87 3187.12 4734.42 7626.00

2. 20.1.2020 4597.3 6743.72 7029.31 4179.86 5380.89 6490.67

3. 9.3.2020 4597.3 6743.72 7029.31 1957.55 5359.62 6978.19

4. 23.6.2020 4493.09 3281.14 5847.80 1865.93 4292.24 5124.32

5. 17.3.2021 4493.09 2737.31 4887.85 1561.84 1802.57 4626.14

6.3 The petitioner has filed a tentative capital expenditure plan for the financial

years 2019-20 to 2021-22 for different transmission ratios of sub stations,

evacuation lines, link lines, improvement works by line strengthening,

enhancement/addition of Power transformers and schemes based on packages

of funding by various agencies viz. ADB,KfW,JICA.Comments received on the

CIP is from one stakeholder suggesting that equity requirement of Rs.3900

crores is ambitious and the surge in expenses to which TANTRANSCO has furnished reply of the focus of investments to meet load growth. The initial

Capital Investment Plan has been revised and investments brought down considerably as can be seen in the preceding paragraph.

6.4 Commission has approved capital investment plans for the period FY 2014-

2016 and FY 2016 to 2019 in M.P No.54 of 2014 dt.28.6.2016 and M.P No.10 of

2016 dt.31.7.2017. In both of the above orders while approving the capital investment plan, Commission had made certain observations and passed directions to the petitioner. The analysis of the present CIP is made with respect to the previous Capital Investment Plans submitted and its physical and financial progress as well. The item wise analysis and decision is as follows:

6.4.1 765 KV sub stations

6.4.1.1Works in all the proposed four nos.765KV sub stations at Ariyalur,North

Chennai,Coimbatore and Virudhunagar have faced delay in some form, given the completion schedule of 24 months to commission the sub stations. Of the four nos. sub stations, the process of awarding work contract in the proposed SS at

Coimbatore is yet to be initiated. An expenditure of Rs.1000 crores has been incurred. In the previous CIP submitted for FY17 to FY19, provision for a capital expenditure of Rs.1505 crores and a capitalization of Rs.212 croreswas made.The petitioner has informed that for any delay in execution, liquidated damages are levied. Works for associated evacuation lines are in progress for

North Chennai Pooling station SS and Virudhunagar SS which has been recently awarded. In the case of Ariyalur, while line works are complete, the SS works are

under progress. The petitioner has been adequately cautioned to execute the sub station works and the lines in tandem to avoid any expenditure being in idle state. Owing to the additions in generating capacity in the successive years in

North Chennai and in the South of this state in Udangudi and evacuation of RE power,the capital expenditure and capitalization to the extent furnished is approved. For the associated link lines where CEA approval is yet to be obtained, based on necessity and load flow studies, and as and when approval is obtained, may be considered in the next plan.

6.4.2 400 KV sub stations

6.4.2.1 The 400 KV sub station at Thervaikandigaithough charged has not been put to full use due to the delay in erection of 400 KV source line. TANTRANSCO has stated RoW issues and litigations. Commission directs the petitioner to take swift action to sought out the RoW issues that are pending for a long period and utilize the SS to full capacity. The expenditure already incurred is shown as

Rs.77.231 crores in Thervaikandigai SS and a CAPEX of Rs.5 crores for FY21.

There are differences in the cost of schemes shown in the previous CIP filed in

M.P No.10 of 2016and approved by the Commission and in this petition in few cases like Thervaikandigai,Thennampatty etc. Considering the progress,

CAPEXis approved, details which are annexed.The difference in capital expenditure for the schemes already approved in the previous CIPs andthe cost incurred may be reconciled at the time of true up. Proposals for the balance 10 nos. 400 KV sub stations for which sanctions are yet to be obtained may be furnished in the next plan with adequate justification furnishing data of load flow in each evacuation line and additional capacities of generation.

6.4.3 230 KV Sub stations

6.4.3.1 A total of 66 nos. of 230 KV sub stations have been proposed. For 32 nos. sanctions are awaited. Commission approves CAPEX and capitalization as submitted by the petitioner for the sub stations where works have been awarded, funding obtained and are under progress. Details are as shown in Annexure

I.There is delay in the schemes fundedby JICA. Commission directs the petitioner to complete all works pertaining to the 230 KV sub station at TNEB

HQrs within the control period of this plan.Commission also directs the petitioner to furnish the details of load flow study made for the proposed 230 KV Sub stations with projected load growth and expected return on investment stating reasons for envisaging the schemes within six months.

6.4.4 110 KV sub stations

6.4.4.1 A total of126 nos.110 KV sub stations have been proposed of which 46 nos. have been commissioned in FY20, another 38 nos. have been commissioned in FY21 before March 2021 and 40 nos. proposed for 2021-22.

On an average, 40 nos. 110 KV sub stations are commissioned every year. The petitioner is directed to furnish the quantitative gains in terms of energy and the financial gain on account of commissioning the 110 KV sub stations by grouping

5 nos. or above in a zone. Commission has issued directions in the M.P No. 10 of 2016 to be prudent while introducing 110KV/22/11 KV ratios.

6.4.5 Power evacuation lines

6.4.5.1 It is noted that separate approvals have either been obtained or

schemes sent for approvals for erection of 765 KV power evacuation lines for the proposed 765 KV sub stations in para 6.4.1 above. A sub station can be fully functional only when evacuation lines are in place at the time of commissioning of the sub station. Transmission planning is essential for augmenting the network without idling the lines or creating congestion. Since the proposed investments are for the 765 KV sub stationsin North Chennai and Virudhunagar both of whichare to serve the upcoming power stations in North Chennai and Tuticorin,

Commission approves the CAPEX and capitalisation for the schemes under progress shown in the Annexure I.Details of ongoing works for the 230 KV,110

KV power evacuation lines may be furnished while filing the actual capital expenditure and capitalisation.

6.4.6 Improvement and link lines

6.4.6.1Sources of funding have not been provided for the improvements and link lines where approval is sought for investment of Rs.185 cores.Since

TANTRANSCO has confirmedin the submissions, that these schemes are tied up for funding with REC/PFC/NABARD, and works are under progress and in consideration of the provisions in Tariff policy for the Appropriate Commission to permit adequate capital investments in new assets for upgrading the transmission system, Commission approves the CAPEX and capitalization as submitted.

6.4.7 Schemes under KfW,ADB,JICA

6.4.7.1 Under KfW funding, a total expenditure of Rs.1041 crores has been incurred prior to FY 20. Many schemes have been shown in the previous CIP.

From the data provided in the petition, the extent of loan,grant, cost overruns met for the delay in completing the projects could not be inferred. TANTRANSCO was directed to furnish the details of grants received, debt equity ratio of various funding packages.

6.5 TANTRANSCO has furnished details of funding as follows:

6.5.1Schemes covered by JICA funding in sanction obtained in G.O Ms. No. 32 dt.29.4.2015 has debt equity ratio of 70:30. ADB funding also has debt equity ratio of 70:30. Schemes under KfW funding constitute 40% loan by KfW,40% grant by MNRE and the balance 20% is equity provided by the petitioner. The schemes under REC/PFC constitute 90:10 debt equity ratio. 10% of JICA loan sanctioned in G.O Ms. No. 5, Energy Department, dt.25.01.2018 that constitutes

Rs.69.50 crores is tobe funded by GoTN. Schemes funded by TNIPP have been shown as 90%/100% grant from GoTN.Where ratio of debt equity is not provided, ratio of 70:30 in accordance to the provisions in the Commission’s tariff regulations is considered. The equity debt portion considered in this approval is for the extent of CAPEX planned for the control period and approval sought.

6.6In the orders issued in M.P No. 54 of 2014 and in M.P No.10 of 2016, while approving the capital investment plan, Commission had pointed out the lack of synchronization between the commissioning of the sub stations and the energisation of its associated transmission lines. Similarly, the State

Transmission Utility was directed to quantify the gain in line losses caused by implementing the schemes shown in the CIP and the cost benefit analysis. The lacunae pointed out in the above two orders on CIP have recurred in this petition

also.TANTRANSCO is still grappling with right of way issues and litigations caused in this regard.

6.716 nos. of 400 KV substations have been commissioned. 1025.573Ckt KM of lines, of which 66 KM is 400KV, have been erected for evacuation/ strengthened. In the Capital Investment plan approved for 2016-2019

TANTRANSCO was directed to quantify the reduction in transmission loss stating the methodology, on completion of schemes on annual basis. The petitioner though has affirmed that line losses are duly to be reduced, has not furnished the quantum of improvement in line losses on account of commissioning of many of the sub stations and erection of power evacuation lines programmed in the previous CIP.

6.8The expenditure already incurred has been shown in few of the schemes. For many of the schemes under 765 KV SS,400 KVSS,230 KV SS, evacuation lines viz. 765 KV SS at Ariyalur,North Chennai,Coimbatore,400 KV SS at

Thennampatty, Vellalaviduthi, Taramani.Korattur,Guindy, 230 KV SS at

Thuvakudy, Samayanallur,Sankarapuram,Avadi etc., evacuation line from

Udangudi pooling station to Kayathar 400 KV SS, though CAPEX and capitalization were provisioned in CIP approved in M.P No.10 of 2016, either the incurred expenditure is meager or nil.

6.9Despite directions issued in M.P No.10 of 2016 to match the commissioning of sub station and its associated lines, competent action has not been taken to complete both sub station works and line erection works at the same time. Few

instances are cited here :

(i) the 400 KV Thervaikandigai SS was back charged on 15.4.2016, but to this date the 400 KV transmission line work is not completed.

(ii) Guindy 400 KV GIS SS was back charged on19.12.2020, but 400 KV underground (UG) cable laying work has not been completed. The SS is kept in back charged condition without being brought into effective utilization.

(iii) The 765 KV line from Thiruvalam SS to Ariyalur SS is kept charged at 110 KV level but Ariyalur SS is not ready. The works for Ariyalur SS that was awarded to

M/s.BHEL is yet to be completed.

Commission, in many of the hearings in the judicial cases had pointed the delays in laying associated transmission lines of new sub stations and to take action to match the commissioning of SS and laying of cable by appropriate award of work in time.

TANTRANSCO shall undertake review of all delayed schemes frequently to commission the SS and its associated lines together so that the entire capacity of the sub station is effectively used. Further while taking up the major Line and SS works, expected line losses may be indicated in CIP approval and later it may be verified with actual losses to take effective steps to get the desired results.

6.10 Number of proposals for erection of new sub stations have beensubmitted and there are more nos. awaiting administrative approvals. The transmission system is generally augmented to cater to the long term requirements like increase in power demand, generation capacity addition, redundancy based on constraints.The augmentation, strengthening works shall be undertaken considering the feedback regarding operational constraints and feedback from drawing, generating entities and aim at a targeted reduction of line loss.

6.11 The transmission licensee hasto always weigh all options viz. expected long term loading of the line, extreme contingencies, cost optimisation, right of way requirements so that different capacities of lines may be run in the same route along with demand/generation while planning to erect sub stations and transmission lines. Commission takes note of the fact that despite facing hurdles in few schemes, the petitioner has evolved number of evacuation and strengthening schemes and have completed the works which will help to avoid any congestions and constraints in transmission.The petitioner is directed to follow the guidelines provided in CEA’s manual for Transmission Planning criteriaand also to adhere to the transmission regulations of CERC where necessary. On completion of each substation with its associated transmission lines, the petitioner shall furnish the loading in the sub station, associated transmission lines, the impact in the area and nearby sub stations/lines apart from quantification of losses. As far as possible, care should be taken to send proposals that could be achieved in the control period instead of parking the funds and carrying over to the successive control periods

6.12Commission after a prudence check and detailed discussions on actual expenditure incurred has accorded approval for the CAPEX and Capitalisationfor

FY 2019-20 and FY2020-21. For the data on CAPEX and capitalization furnished for FY 22, considering the progress of works made in each of the schemes and anticipated completion of works in the next FY, approval for

CAPEX and capitalization has been accorded.

6.13Thepetitioner was directed to implead the Secretary to Government,Finance

Department,Government of Tamil Nadu. Remarks have not been furnished in this regard. Petitioner has submitted that from 2016-17equity assistance from

Government of Tamil Nadu has not been received. Equity assistance shall be required from GoTN to continue with the progress of building a resilient congestion free transmission network for the long term.

6.14The capital expenditure approved for 2019-20 is Rs.4493.09 crores, for

2020-21 is Rs.2697.62crores and for 2021-22 is Rs.3990.01crores. The table below is the capital expenditure and capitalisation approved by the Commission.

The details of capital expenditure and capitalization submitted in the petition and that approved by the Commission showing justification are shown in Annexure I.

Annexures II and III covers list of sub stations where sanction is awaited and 110

KV sub stations commissioned in FY2019-20,FY2020-21 and to be commissioned respectively.

Table Capital Expenditure and Capitalisation approved by the Commission for FY 2019-20 to FY 2021-22

Sl.No. Description Capital Expenditure Rs. in Crores Capitalisation Rs. in Crores Submitted by Approved by Commission Submitted by Approved by TANTRANSCO TANTRANSCO Commission 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021-22 20 21 22 20 21 22 20 21 22 20 21 I Sub station works

765 KV Sub stations 1934.65 467.75 452.12 1934.65 467.75 379.32 - - 2417.85 - - 2056.64

400 KV Sub stations 290.3 559.30 1765.66 290.3 520.59 1020.62 59.95 - 517.62 - - 517.62

230 KV Sub stations 450.07 249.07 358.69 450.07 248.09 358.69 296.41 310.12 471.51 176.39 268..91 429.90 110 KV Sub stations 325.00 40.00 30.00 325.00 40.00 30.00 224.50 182.50 35.00 224.50 182.50 35.00 Sub total(excluding 3000.02 1316.12 2606.46 3000.02 1276.43 1788.63 580.06 492.62 3441.98 400.89 451.41 3039.16 funding under JICA,KfW,ADB) II Transmission Line works Power evacuation – 388.00 65.37 87.14 388.00 65.37 87.14 30.00 40.00 229.88 30.00 40.00 20.00 765 KV,400 KV,230 KV and 110 KV Improvement and 150.00 10.00 25.00 150.00 10.00 25.00 120.00 80.00 17.50 120.00 80.00 17.50 link lines Sub total 538.00 75.37 112.14 538.00 75.37 112.14 150.00 120.00 247.38 150.00 120.00 37.50 III Others

JICA funded 297.08 64.93 193.94 297.08 64.93 193.94 - 64.70 173.04 - 64.70 173.04 schemes KfW funded 241.00 220.00 300.00 241.00 220.00 300.00 525.403 956.35 252.077 525.403 956.35 252.077 schemes ADB funded 26.11 966.35 1421.47 26.11 966.35 1421.47 - - 243.39 - - 243.39 schemes Other schemes 390.88 94.54 253.83 390.88 94.54 173.83 305.577 168.90 268.273 305.577 168.95 212.273 Sub total 955.07 1345.82 2169.24 955.07 1345.82 2089.24 830.98 1189.95 936.78 830.98 1190.00 880.78 4493.09 2737.31 4887.85 4493.09 2697.62 3990.01 1561.84 1802.57 4626.14 1381.87 1761.41 3957.44

6.15 Funding of capital expenditure approved by the Commission is tabulated below:

Sl.No. Particulars 2019-20 2020-21 2021-22 (Rs.in crores) (Rs. in crores) (Rs. in crores) 1. Grant 148.78 136.72 220.96

2. Equity 511.77 477.42 739.84

3. Debt 3832.54 2083.48 3029.21

Total 4493.09 2697.62 3990.01

6.16 Directions:

(a) For all the schemes, commencing during the Control Period from 1stApril

2019, TANTRANSCO shall submit the year-wise actual capital expenditure incurred along with detailed justification for delay, if any.

(b) The Petitioner shall submit the reduction in transmission loss on account of commissioning of schemes for FY2016-17,FY 2017-18,FY2018-19 and from FY

2019-20 to the date of this order furnishing the methodology adopted to quantify the losses with names of the scheme, expenditure incurred and submit cost benefit analysis to the Commission.The above details shall be furnished every year by 15th

April.

(c) TANTRANSCO shall maintain the record for the scheme-wise actual capital expenditure incurred and actual capitalisation done separately for the schemes commencing after April, 2019, which shall be submitted to the

Commission at the time of next Tariff Petition. The Commission will approve the actual Capital expenditure and actual capitalisation based on such information, subject to prudence check. 36

(d) The petitioner is directed to submit feasibility reports containing technical details and justification, cost assessments, phasing of investments, return on investment, impact/benefits to customers for those schemes involving expenditure above Rs.100 crores.

(e) The petitioner shall seek prior approval of the Commission when the total capital expenditure exceeds 5% of the approved expenditure in this capital investment plan.

(f) The petitioner shall take care to comply with all directions issued in this order.

(g) The Government of Tamil Nadu shall provide equity assistance to the portion of equity provided in this Capital Investment Plan for each FY. The petitioner shall approach GoTN to provide equity assistance for the investments made as approved in this order.

(Sd...... ) (Sd...... ) (K.Venkatasamy) (M.Chandrasekar) Member (Legal) Chairman

/True Copy / Secretary Tamil Nadu Electricity Regulatory Commission

ANNEXURE I

Capital Expenditure and Capitalisation submitted by the petitioner and that approved by the Commission (Rs.in Crores)

I 765 KV substations

Ariyalur 765 KV SS - 2131.45/ 91/ 31.3.2019/ 1082.5 396.15 150.00 67.35 396.15 150.00 67.35 - - 848.00 - - 848.00 1a 2 x 1500 MVA 1696/ 07.11. 21-22 2013 For transferring Sub Station Associated lines : power either way (SS) Works are 765 KV DC line which have been under fromAriyalur to pooled at North REC progress. Line Thiruvalam; Chennai Pooling works 2X400 KV DC line by station and for completed. making LILO of 400 KV transfer of

Pugalur - Kalivanthapattu interstate Power feeder at Ariyalur 765/400 KV SS 2 nos. 765 KV, 240 MVAR Line Reactors and one no. 228/ Part of works 1b Spare reactor with panels 60.80 07.10 48.64 12.16 - 48.64 12.16 - - - 48.64 - - 48.64 ‘’ are under and accessories for .2017 progress. Ariyalur - Thiruvalam line 2 North Chennai Pooling 1483.81 / 64/ 20.03.20 469.78 177.25 261.97 469.78 177.25 261.97 - - 454.50 - - 300.00 Evacuating the PFC Works are Station 765 KV SS (GIS) - 909.00 25.07.20 / 2021- power from under 3 x 1500 MVA 15 22 various thermal progress. power projects in North Chennai area andto meet the future load growth of Chennai region.

3 Coimbatore 765 KV SS 2455.98 74/ 2023-24 - 15.00 122.80 - 15.00 50.00 ------To export the REC Land registration Associated lines : 03.11. power from North is in final stage. 2016 Chennai Pooling Working estimate station to is under i) 765 KV DC line with Coimbatore preparation. Hexa Zebra conductor region. from Coimbatore to Ariyalur 765 KV SS;

ii) 400 KV DC line with Twin Moose conductor from Coimbatore to Edayarpalayam 400 KV SS.

iii) 2 runs of 400 KV DC line with Quad Moose conductor for LILO of 400 KV DC Rasipalayam- Palavady line at Coimbatore 765 KV SS

230 KV SC line on DC For other works towers with Zebra proposed under conductor from MNRE, CEA Virudhunagar to approval Thummakundu 230 KV awaited. SS

230 KV SC line on DC towers with Zebra conductor from Virudhunagar to Savasapuram 230 KV SS

230 KV SC line on DC towers with Zebra conductor from the proposed Virudhunagar 765 KV SS to Kinnima- nagalam 230 KV SS. 400 KV DC line from common point of 400 KV DC Kamudhi- Thappagundu line

5 Thervaikandigai 400 KV 90.86 7/10.02 03.3.201 77.231 5.00 To connect all the REC SS charged on SS -2 x 315 + 1 x 200 .2012 4/21-22 private power 15.4.16 at 230 MVA plants that can KV level.400 be used as KV lines evacuation hub expected to be with connectivity commissioned to major 400 KV shortly. sub stations, to meet rapid increase in demand. 6 Thennampatty 400 KV SS 418.88 190/08.1 24.7.201 For evacuation of KfW SS charged on – 2 x 315 + 2 x 200 MVA 0.2014 7/30.5.2 wind power. 5.11.19. (Details under KfW 019 funding)

7 Vellalaviduthi – 2 x 315 + 909.19/6 80/11.1 27.12.20 20.00 132.53 218.54 218.54 132.53 205.00 100.00 - - 294.805 - - 294.805 For system PFC Works are under 2 x 200 MVA 24.4 2.20 15 19/ strengthening progress for SS 2021-22 and lines

8 Pulianthope 400 KV SS 558/495. 83/06.1 02.2.202 152.77 218.59 74.27 152.77 218.59 74.27 - - 222.813 - - 222.813 To provide REC SS, 230 KV line (GIS) -3 x 315 MVA 14 1.20 13 0/2021- system stability works under 22 in North and progress. Central EDCs 9 Edayarpalayam 400 KV 433.02/ 189/10. 7.7.2021 5.00 5.00 177.33 5.00 5.00 177.33 ------System REC SS, 230 KV line SS – 2 x 315 + 3 x 200 240.419 8.2017 /2022-23 strengthening to works under MVA evacuate power progress. 400 received from KV line works Chattisgarh execution by PGCIL.

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 10 Taramani 400 KV SS 707.88/ 215/15. 29.5.202 - 5.00 389.33 - 5.00 100.00 ------To export power REC Work awarded (GIS)(UG) – 2 x 500+ 2 x 413.56 12.201 1/2022- from generating for SS and 200 + 2 x 50 MVA 6 23 stations in North under progress. Chennai to South Tender floated Chennai for 400 KV lines. 11 Ottapidaram 400 KV SS 1038.9/7 5/03.2. 12.2.202 For evacuation of ADB Work awarded -2 x 500 + 2 x 200 15.86 2018 2/2021- power from for SS and 400 (Details under ADB 22 Udangudi Thermal KV lines package) project and Ottapidaram to renewable power. Kamudhi and Udangudi 12 Samugarengapuram 400 599.65 17/03.3 2022-23 - - 29.98 - - 29.98 ------To avoid MNRE Approval KV SS – 2 x 500 + 2 x 200 .2018 congestion in 110 accorded by MVA KV and 230 KV CEA.MNRE’s lines while approval evacuating about awaited. On 1800 MW of wind receipt, Tender power will be floated. fromAralvaimozhi pass. 13. Parali 400 KV SS - 429.78 21/05.3 21.6.202 - 5.00 214.89 - 5.00 80..00 ------For evacuation of REC Work awarded 3 x 166.66 + 3 x 166.66 .2019 2/2022- power from for SS at a MVA 23 Kundha Pumped cost of Rs.221 Storage Hydro crores and electric Project work commenced. Work awarded for lines too. 14 Koyambedu 400 KV SS 1488.10 7/04.3. 2022-23 - 102.17 148.81 - 82.00 90.00 For strengthening REC Land GIS – 2 x 500 MVA 2020 Chennai network registration to be done and tender to be floated for SS and lines.

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 15 Korattur 400 KV SS – 511.3/50 55/25.1 17.11.20 - 0.50 151.80 - 0.50 151.80 ------To strengthen the JICA Work awarded 2 x 500 + 2 x 200 MVA 6.55 0.2012 21/2022- Chennai network on 18.05.2020. (JICA scheme) 23 16. Guindy 400 KV SS – 756.52/3 55/25.1 25.06.20 84.00 176.95 28.45 25.00 176.95 28.45 25.00 - - 115.5 - - 115.5 To strengthen the JICA SS charged at 2 x 315 MVA 39.40 0.2012 20/2022- Chennai network 230 KV level 23 on 19.12.2020. On completion of 400 KV OH and UG cable works, SS will be charged at 400 KV level. 17 Associated 400 KV lines 260.05 7/10.2. 29.6.2016 147.71 50.00 10.00 10.00 50.00 10.00 10.00 ------Associated lines JICA Works are of Thervaikandigai SS 2012 / 31.3.2022 of Thervaikandigai under progress SS for power evacuation 18 Sanction awaited for 10 - - 0.50 - - 0.50 ------For system To be Work to be nos. 400 KV sub stations strengthening tied awarded after listed in Annexure II up approval and tendering. 19 400 KV UG cable for 1200/ July 512.00 368.54 Associated lines REC Work awarded Guindy and Manali 1024 2023 of Guindy and and survey is Manali SS in progress. C 230 KV Sub stations

20 Udanapally 230 KV SS – 168.06 109/28.10. 2019-20 77.50 90.56 - - 90.56 - - 134.448 33.612 - 134.448 33.612 - To meet the future PFC Commissioned 2 x 100 MVA 2014 load growth of on 23.6.2019. Krishnagiri District due to formation of SEZ and Hogennnakkal combined water scheme.

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 21 Thuvakudi 200 KV SS – 117.00 50/21.5 2021-22 5.85 29.25 11.70 23.40 29.25 11.70 23.40 - 21.06 49.14 - - 49.14 To provide load TNIP Works are 2 x 100 MVA .2015 relief to Trichy, P-II under progress Thanjavur and for SS. Line Alandur 230 KV S works and to meet future completed. load growth. 22 Samayanallur 230 KV 83.89 59/23.7 2020-21 14.17 52.94 16.78 - 52.94 16.78 - 41.945 41.945 - 41.945 41.945 - To provide load REC Commissioned SS- 2 x 100 MVA .2015 relief to existing . 230 KV sub stations at Alagarkoil and Pasumalai and to meet future load growth in Madurai area. 23 Narimanam 230 KV SS – 90.31 67/27.7 2022-23 - 0.50 9.03 - 0.50 9.03 ------To provide load PFC Tender lodged. 2 x 100 MVA .2015 relief to Tiruvarur, Retendering Kadalangudi and under process. Kumbakonam 230 KV SS, flexible operation, arrange alternate feeding arrangements and meet load growth. 24 Sankarapuram 230 KV SS- 177.94 10/04.02 6.8.2019 50.00 108.75 6.00 - 108.75 6.00 - - 88.97 88.97 - 88.97 88.97 To avoid over- REC Commissioned 2 x 100 MVA .2016 /31.3.20 loading in 110 KV on 15.7.2020 20 Villupuram-Deiva- kuruchi feeder, strengthen infrastructure facilities for power evacuation meeting N- 1 criteria as CEA norms.

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 25 Tiruppathur 230 KV SS – 148.16 12/04.2 18.6.201 45 73.53 14.82 5.00 73.53 14.82 5.00 - 69.17 69.17 - 69..17 69.17 To provide load PFC Works are 2 x 100 MVA .2016 9/2021- relief to nearing 22 Singarapet and completion. Vinnamangalam Testing under 230 KV SS and progress. to meet future load growth in and around Tiruppathur area. 26 Thiruvanmiyur 230 KV SS 179.89 137/16. 24.5.201 17.99 35.98 53.97 17.99 35.98 53.97 - - 86.34 - - 86.34 To accommodate TNIP Works are (GIS) – 2 x 100 MVA 8.2016 9 future load growth P - II nearing in and around completion. Thiruvanmiyur and provide load relief to Thiruvanmiyur 33/11 KV SS and nearby Sub stations 27 Mambalam 230 KV SS 92.82 36/06.3 24.7.202 1.50 10.00 37.13 18.56 10.00 37.13 18.56 - 20.157 47.03 - - 40.00 To provide load REC Work under (GIS) – 2 x 160 MVA .2014 0/2021- relief to progress. 22 Nandanam, Kodambakkam and Valluvarkottam 110 KV sub stations 28 Karuppur 230 KV SS – 72.51/32. 52/30.8 2021-22 5.73 21.25 5.25 5.73 21.25 5.25 - - 16.12 - - 16.12 To provide relief to REC Work under 2 x 100 MVA 23 .2017 Salem 230 KV SS progress and Thoppur 400 KV SS

29 Singarapet 230 KV SS 63.52 115/15. 2020-21 3.00 38.11 18.06 - 38.11 18.06 - - 29.59 29.59 - 29.59 29.59 System REC Commissioned (replacement of existing 7.2015 strengthening on 22.2.2021 SS) – 2 x 160 MVA

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 30 Selvapuram (Puttuvikki) 64.35/ 55/06.9 23.10.20 5 11.00 16.09 12.87 11.00 16.09 12.87 - - 22.475 - - 22.475 To provide load REC SS and line 230 KV SS – 2 x 100 MVA 35.98 .2016 19/2021- relief to nearby works under 22 sub stations and to progress meet load growth 31 Erode 230 KV SS (GIS)) 80.26/61. 5/11.01 30.9.202 - 32.10 24.08 - 32.10 24.08 - 5.618 28.09 - 5.618 28.09 To provide load REC SS works – 2 x 100 MVA 928 .2017 0/30.6.2 relief to Ingur, under 021 Gobi, Thingalur progress; Line and energized on Palakkapalayam 8.2.2021 230 KV Sub stations and to meet load growth 32 Ganesh Nagar 230 KV SS 93.86 50/30.8 30.6.202 - - 4.69 - - 4.69 ------To provide load PFC/J Tender lodged. (GIS) – 2 x 100 MVA .2017 2/2022- relief to nearby ICA II Retendering to 23 sub stations and to be taken up. meet future loads. Included in JICA II 33 Avadi 230 KV SS – 2 x 102.83 54/30.8 30.6.202 5.14 1.03 20.57 5.14 1.03 20.57 ------To provide TNIP Tender lodged 100 MVA .2017 2/2022- flexibility in P - II for SS works. 23 operation and to Retendering to meet future load be made. 230 growth KV line works under progress. 34 Maraimalar Nagar 230 KV 110.35 2/19.1. 30.11.20 5.52 11.04 33.11 5.52 11.04 33.11 ------To provide load PFC SS work SS – 2 x 100 MVA 2018 21/2021- relief to existing awarded. 230 22 230 KV SS and to KV line works meet future load in progress. growth.

36 Kalivelampatty 230 KV 117.72 61/04.1 31.3.202 - 11.77 23.54 - 11.77 23.54 - - 17.66 - - - To provide load REC Work awarded SS – 2 x 100 MVA 0.2018 2/2021- - relief to Arasur for SS and 110 22 and Palladam 230 KV lines and is KV sub stations in progress. and to meet future Revised load growth approval for 230 KV lines to be obtained.

37 Nanguneri 230 KV SS – 2 135.70 63/04.1 31.3.202 - 6.79 13.57 - 6.79 13.57 - - 6.1065 - - - To avoid REC SS work under x 100 MVA 0.2018 2/2021- overloading of progress. Line 22 Kayathar 230 KV works to be SS and 110 KV taken up. Melakallur- Sankaneri feeder

38 Vembakkam 230 KV SS – 84.20 60/04.1 31.3.2022/ - 0.50 16.84 - 0.50 16.84 - - 5.202 - - - To provide relief to PFC Work awarded 3 x 100 MVA 0.2018 2021-22 Arani 230 KV SS for SS and and to meet future lines. load growth

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 39 Mambakkam 230 KV SS 137.77 59/04.1 31.3.2022/ - 5.00 13.74 - 5.00 13.74 - - 5.6211 - - - To provide load PFC SS and line – 2 x 100 MVA 0.2018 2021-22 relief to S.P Koil works under 230 KV sub station progress and avoid overloading of 110 KV S.P Koil- Siruseri and 110 KV Veerapuram- Thiruporur feeders and to accommodate future load growth . 40 Nallur 230 KV SS 155.03 03/10.0 31.3.2022/ 1.55 1.55 15.50 1.55 1.55 15.50 ------To provide 110 KV PFC SS work under 1.2019 2021-22 source to progress. proposed 110 KV Revised sub stations and approval for load relief to lines being nearby 230 KV obtained. sub stations and accommodate future load growth . 41 K Pudur 230 KV SS (GIS) 320.49 36/17.6 31.12.20 - - 6.41 - - 6.41 ------To provide load PFC Working – 2 x 100 MVA .2017 22/2022- relief to 110 KV estimate under 23 feeders feeding scrutiny for Madurai area and floating tender. to provide reliable supply to 33 KV sub stations feeding Madurai city.

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 42 K.K Nagar 230 KV SS 333.13 87/04.6 31.10.20 - - 9.99 - - 9.99 ------To provide load REC/ Tender under (GIS)- 3 x 100 MVA .2018 22/2022- relief to Guindy JICA process. Lines 23 and Koyambedu II 230 KV SS, to provide flexibility in operations and to provide alternate feeding arrangements to existing sub stations to provide uninterrupted supply. 43 Poolavady 230 KV SS – 107.32 49/06.9 31.10.20 - - 5.37 - - 5.37 ------To provide load KfW/M Proposed under 2 x 100 MVA .2016 22/2022- relief to nearby NRE GEC phase II. 213 sub stations and to MNRE approval meet future load awaited. Tender growth to be floated on receipt of approval. 44 Ennore 230 KV SS (GIS) 116.42 181/01. 31.10.20 - - 5.82 - - 5.82 ------To shift the PFC/J Tender to be – 2 x 100 + 2 x 50 + 2 x 8.2017 22/2022- existing 230 KV ICA II floated. . 16 MVA 23 ETPS SS to a new location in vacant space available at Ennore 110 KVSS, to provide start up power to the proposed power plants in the area and to extend supply to railway traction SS

46 Rajagopalapuram 230 KV 123.02 24/07.5 31.10.20 - - 6.15 - - 6.15 ------To avoid PFC Estimate is SS ( GIS) – 2 x 100 VA .2018 22/ overloading of under 2022-23 Kayathar 230 preparation. KVSS and to improve voltage profile

47 Muppandal 230 KV SS – 66.30 38/30.6 31.10.20 - - 3.32 - - 3.32 ------To have separate KfW/M Proposed 3 x 100 MVA .2018 22/ corridor for wind NRE under GEC II. 2022-23 generators and to Tender will be avoid grid floated on congestion receipt of approval from MNRE .

48 Pallavaram 230 KV SS ( 184.53 51/03.8 31.10.20 - - 3.69 - - 3.69 ------To provide load PFC Tender opened GIS)- 3 x 100 MVA .2018 22/ 2022 relief to Kadapperi and is under 230 KV SS, to process. avoid overloading of 110 KV Kadapperi – Pallavaram feeder and to meet future load growth

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 49 Thuckalay 230 KV SS 366.63 62/04.1 31.10.20 - - 7.33 - - 7.33 ------For evacuation of PFC Estimate is (GIS) – 2 x 160 MVA 0.2018 22/ 2022 wind power, to under avoid overloading, preparation. to provide uninterrupted supply and to meet load growth. 50 Saravanampatty 230 KV 188.33 38/09.8 31.10.20 - - 3.77 - - 3.77 ------To provide load REC Proposed SS (GIS) – 3 x 100 MVA .2019 22/ 2022 relief to nearby under GEC II. 230 KV sub Load flow stations study viz.Arasur,Karam completed. ada,Thudiyalur,K aruvalur and Coimbatore 51 32 nos. 230 KV sub - 1.00 5.00 - - 5.00 ------For system To be Works will be stations proposed and strengthening tied taken up after sanction awaited (Details up sanction proposed in Annexure II) 52 Thiruppur 230 KV SS – 2 75.44 39/25.1 2019 - 19.00 27.30 11.70 - 27.30 11.70 - - 29.00 29.00 - 29.00 29.00 i)To accommodate JICA Thiruppur SS x 100 MVA; +77.66/ 0.11/ 20/2020- future load growth commissioned Shenbagapudur 230 KV 58 21/14.6 21 in Thiruppur area. on 1.3.2020; SS – 2 x 100 MVA under .11 ii) To avoid Shenbagapudur JICA funding overloading of 110 SS KV feeders and to commissioned accommodate on 26.2.2021. future load growth in Gobi. 53 TNE HQtrs 230 KV SS – 71.39 68/11.4 2020-21 42.83 14.28 7.14 42.83 14.28 7.14 - 35.695 28.544 - 35.695 28.544 To augment the JICA Work in 2 x 100 MVA .2007 needs of Chennai progress. city and to strengthen 230 KV and 110 KV network

57 765 KV DC line from 810 2022-23 To be Administrative Uppur to Virudhunagar tied approval up awaited. 58 765 KV SC line from 99.87 70/1.11 2021-22 84.89 14.98 - 84.89 14.98 - - - 49.935 - - - For evacuation of PFC Work in NCTPS Stage III to North .2018 power from progress. Chennai Pooling station -8 NCTPS Stage III Km Power Project 59 765 KV SC line from 2023-24 Sanction will Ennore replacement be initiated expansion to North based on load Chennai Pooling station flow study

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 60 765 KV SC line from 2023-24 “ Ennore replacement to NCTPS Stage III. 61 Erection of 400 KV DC 301.41 42/18.5 31.3.202 - - 30.14 - - 30.14 - - - - - For evacuation of REC Proposal being transmission line with .2015 3/2022- power from sent to Quad Moose conductor 23 Udangudi Thermal Standing from Udangudi Pooling Power project and Committee for station to Kayathar 400 to avoid over- approval. KV SS (170 Kms) loading ofKayathar400 KV SS 62 400 KV DC line from 660.97 262/09. 2022-23 - - 6.61 - - 6.61 - - - - - For evacuation of MNRE Tender will be Kamudhi to Thappagundu 11.201 renewable energy floated on (370 Kms) 7 receipt of approval from MNRE. 63 400 KV DC line with quad 319..89 36/30.5 2021-22 10.00 243.11 30.39 30.39 243.11 30.39 30.39 - - 159.945 - - - For evacuation of PFC Works under Moose conductor from .2015& power from progress. 12.01.2 proposed Thermal i) Ennore SEZ 400/230 KV switchyard to North 016 Power projects in Chennai 765 KV Pooling North Chennai station area

ii) Ennore SEZ 400/230 KV switchyard to ETPS Expansion 400/230 KV switchyard

iii) ETPS Expansion to North Chennai Pooling station

iv) Interconnecting line from common point AP23 of SEZ expansion line to NCTPS Stage –III. (72.894 Kms)

Improvement and link lines

66 230 V and 110V 360.05 Various 150.00 150.00 120.00 75.00 120.00 75.00 For system REC/ Capitalization improvement and link approvals improvement PFC/ of Rs.45 crores lines – 2019-20 (350 NABA carried over CktKms) RD from 2018-19. 67 230 V and 110V 10.00 10.00 5.00 5.00 5.00 5.00 On going improvement and link “ “ works. lines – 2020-21 68 230 V and 110V 25.00 25.00 12.50 12.50 On going improvement and link “ “ works. lines – 2021-22 1593/173 190/8.1 KfW Awarded cost Schemes under KfW 3.82/204 0.2014/ of Rs.1733.82 funding 9.392 53/29.1 revised to 1.19 Rs.2049.39 due to IDC,treecompe nsation,GST 69 Package I – 151.60 151.60 151.60 For evacuation of Commissioned wind power. “ on 05.11.2019 400 V SS at Thennnampatti (Pavoorchatram)

230 KV transmission lines “ lines, five nos. connecting various sub have been stations in Tirunelveli, energized and Madurai, Coimbatore for the balance region and 13 nos. 230 work is under KV bays progress. 73 Package V 126.12 63.06 63.06 63.06 63.06 12/17 nos. “ completed. For Augmentation of the balance, “ transformation capacity at works are 6 sub stations under progress. 3850 243.39 ADB Capitalisation Schemes under ADB IND/17.1 under ADB for .2020 all packages.

Sl. Description Cost of Approval Date of Expen Submission of Approved by the Submission of Approved by the Present No scheme accorded complet diture TANTRANSCO Commission TANTRANSCO Commission Justification Funding status Rs. in in ion alread crores Board’s (actual/a y Capital Expenditure Capital Expenditure Capitalisation Capitalisation Proceedi nticipat incurr Rs. in crores Rs. in crores Rs. in crores Rs. in crores (approved/ ngs (B.P ed) ed awarded) No.) 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 2019- 2020- 2021- 20 21 22 20 21 22 20 21 22 20 21 22 74 Package –I 715.86 5/03.02 0.00 254.60 415.81 0.00 254.60 415.81 0.00 For evacuation of Work awarded .2018 power from “ on 9.11.19 and Ottapidaram 400 KV SS Udangudi power under with 2 nos. DC lines project and progress. renewable power. 75 Package –VII 40.15 “ “ “ “ “ Work under “ progress Associated 230 KV and 110 KV lines of Ottapidaram 400 KV SS 76 Package – II 542.90 18/ 108.58 325.74 108.58 325.74 For evacuation of Work awarded 03.03. power from “ on 13.2.20 and Virudhunagar 765 KV SS 2018 Udangudi,Uppur, work under wind,solar power progress. from Kayathar,Kamuthi and Thappagundu. 77 Package III 266.00 13.30 26.60 159.60 13.30 26.60 159.60 “ Work awarded “ on 13.2.20 and 400 KV DC line from work under Kayathar -Virudhunagar progress. 765 KV SS (72 Kms) 78 Package IV 442.79 12.81 576.57 520.32 12.81 576.57 520.32 - - “ Work under “ progress.. 765 KV DC line from Virudhunagar to Coimbatore 765 KV SS – Reach I 79 Package V 442.615 “ Work under “ progress.. 765 KV DC line from Virudhunagar to Coimbatore 765 KV SS – Reach II

81 Additional/Enhancement 600.00 Various 150.00 50.00 75.00 150.00 50.00 75.00 150.00 50.00 75.00 150.00 50.00 75.00 To ensure REC/ Work under of Transformers approvals optimum loading PFC progress of substations, to provide load relief in existing sub stations, to provide reliable supply. 82 TRANSCO building 56.92 26.00 24.74 6.18 - 24.74 6.18 - - 28.46 28.46 - 28.46 28.46 Construction of REC Work under office for progress TANTRANSCO 83 Capacitor bank 17.55 1.50 12.54 3.51 - 12.54 3.51 - - 8.78 8.775 - 8.78 8.78 To improve REC Work in voltage profile progress. 84 Reactors 62.82 3.14 18.85 40.83 3.14 18.85 40.83 - 31.41 31.41 - 31.41 31.41 To improve PSDF Work under voltage profile progress 85 Quarters at Guindy and 17.00 2021-22/ 2.00 3.00 5.00 2.00 3.00 5.00 - - 10.00 - - 10.00 To accommodate REC Work awarded Korattur 2022-23 staff of SS. for Quarters at Guindy and tendering under progress for Korattur. 86 SE/GCC’s office 9.65 2.00 3.00 3.00 2.00 3.00 3.00 1.00 1.00 6.00 1.00 1.00 6.00 Construction of REC Work under (Trichy and Coimbatore) office for SE/GCC progress

87 Construction of 5.24 2.00 3.24 - - 3.24 - - - 2.62 2.62 - 2.62 2.62 For the purpose of REC Work under Transformer Repair Bay repairing progress at Arasur transformers.

Annexure II

List of schemes for which sanction awaited

Sl. Location of Sub station No. I 400 V Sub stations

1 Manalmedu

2 Cuddalore

3 Arani

4 Mangalapuram

5 Vadamadurai

6 Viswanathapuram

7 Sholinghur

8 Alagarkoil

9 S.P. Koil

10 Mathur

II 230 KV Sub Stations

1 Kongalnagaram

2 Edapady

3 Kondhagai

4 Srivilliputhur

5 Mathur 6 Thummakundu

7 Palani

8 Vedasandur

9 Thindivanam

10 Virudhachalam

11 Ranipet

12 Vadakathipatty

13 Mariputtur

14 Palayamkottai

15 Thiruppalai

16 Kalavai

17 Vadapathimangalam

18 Velliyanai(Sankaramalaipatty)

19 Chinnasalem

20 Chidambaram

21 Polur/mangalam

22 Aavanam

23 Uthayapatty

24 Nandhimangalam

25 Kalugoundapalayam

26 Sandinallah

27 Aavin 28 Augustinpatty

29 Kanagavallipuram

30 Chengapally

31 Chinnayampalayam

32 Irugur ANNEXURE III

List of 110 KV Sub Stations commissioned

2019-20

Sl. Name of Sub Voltage Type of Capacity Admn. Date of Cost of No. Station ratio SS approval commis scheme sioning Rs. in crores 1 Thirupurambiyam 110/33 51/06.09. Intro 1x16 09.04.19 11.10 16 110/33 306/26.1 2 Keelakuppam Intro 1x16 11.04.19 2.104 2.17 110/33 55/30.08. 3 Elliambedu New 1x16 28.04.19 2.192 17 110/33 232/12.1 4 Ko.Poovanur Intro 1x16 30.05.19 8.12 0.17 110/33 68/18.03. 5 Manickampatty Intro 1x16 20.06.19 6.098 17 Thanneerpandal at 110/33 250/26.1 6 New 1x16 01.07.19 9.696 Thenmugavellode 0.17 57/09.03. 7 Vellakarai 110/22 New 1x16 04.07.19 4.850 18 150/27.0 8 Alamarathur 110/22 New 1x16 08.07.19 2.418 9.18 Tiruppur 62/14.03. 9 110/11 New 1x16 12.07.19 2.211 Collectorate 17 226/05.1 10 Morappur 110/11 New 1x16 19.07.19 2.341 0.17 218/21.0 11 Jalakandapuram 110/33 Intro 1x16 23.07.19 2.364 9.17 168/15.0 12 Edayamelur 110/22 New 1x16 26.07.19 11.317 7.17 45/06.03. 13 Keelakottai 110/22 New 1x16 29.07.19 2.103 18 47/30.08. 14 Poonimangadu 110/33 Intro 1x10 21.08.19 10.209 17 7/08.01.1 15 Mullukudy 110/33 New 1x16 29.08.19 6.739 8 10.285 52/25.02. 16 Kavilipalayam 110/33 Intro 1x10 30.08.19 17

Sl. Name of Sub Voltage Type Capacity Admn. Date of Cost of No. Station ratio of SS approval commis scheme sioning Rs. in crores Thirumalaisamuthir 49/30.08. 17 110/33 New 1x16 28.02.20 10.399 am 17 Pattanam at 32/20.05. 18 110/11 New 1x16 01.03.20 22.341 Singanallur 17 39/27.02. 19 Sengadurai 110/11 New 1x16 23.03.20 11.015 19 245/24.1 20 Cheramangalam 110/33 New 1x16 24.03.20 2.132 0.17 306/26.1 21 Devanampalayam 110/22 New 1x16 18.10.19 8.122 2.17 55/30.08. 22 Veeravanallur 110/33 Intro 1x16 11.10.19 6.098 17 Vadaveeranayakan 232/12.1 23 110/22 New 1x10 16.10.19 9.691 patty 0.17 68/18.03. 24 Mecheri 110/33 Intro 1x16 24.10.19 4.850 17 250/26.1 25 A.Thekkur 110/33 Intro 1x16 03.12.19 2.418 0.17 57/09.03. 26 Panapalayam 110/11 New 1x16 06.12.19 2.211 18 150/27.0 27 Kurunjipadi 110/33 Intro 1x16 11.12.19 2.341 9.18 62/14.03. 28 Nallamanarkottai 110/33 New 1x10 21.12.19 2.364 17 Keelakarai (Re 226/05.1 29 110/11 Reestt 1x10 23.12.19 11.317 establishment) 0.17 218/21.0 30 Sitharkalnatham 110/33 Intro 1x16 31.12.19 2.102 9.17 168/15.0 31 Thengampudur 110/33 Intro 1x16 02.01.20 10.209 7.17 45/06.03. 32 Pattukottai Urban 110/33 Intro 1x16 09.01.20 6.739 18 47/30.08. 33 Kornampattu 110/33 Intro 1x16 14.01.20 10.285 17 7/08.01.1 34 Indalur 110/11 New 1x10 22.01.20 2.230 8 52/25.02. 35 Vallioor 110/33 Intro 1x16 22.01.20 11.10 17 60/07.09. 36 Sittampoondi 110/33 UG 1x16 23.01.20 2.104 16 Sl. Name of Sub Voltage Type Capacity Admn. Date of Cost of No. Station ratio of SS approval commis scheme sioning Rs. in crores 44/30.08. 37 Arasady 110/22 New 1x10 30.01.20 2.192 17 68/18.03. 38 Emapally (Molasi) 110/22 New 1x16 06.02.20 8.122 17 51/06.09. 39 Kanyakumari 110/33 Intro 1x16 22.02.20 6.098 16 New 1x16 84/02.06 26.02.20 38.703 40 Racecourse 110/11 .16

96/07.06. 19.03.20 45.202 41 Poovalur 110/33 Intro 1x16 18

198/07.0 26.02.20 49.296 42 Kidarankondan 110/11 UG 1x10 9.17

110/3 113/11.0 43 Itchipatty Intro 1x25 19.09.19 3.015 3 7.18 110/3 177/29.1 44 Perumanallur Intro 1x16 30.09.19 4.722 3 2.18 110/3 111/11.0 45 Petaivaithalai Intro 1x16 04.10.19 3.056 3 7.18 110/3 70/18.03. 46 Uranipuram Intro 1x16 04.10.19 2.121 3 17

2020 - 21

Sl. Name of Sub Voltage Type Capacity Admn. Date of Cost of No. Station ratio of SS approval commis scheme sioning Rs. in crores 1 247/24.1 26.04.20 Kovilvenni 110/33 Intro 1x16 2.498 0.17 20 207/13.0 22.05.20 2 Valayamadevi 110/33 Intro 1x16 2.293 9.17 20 126/20.0 27.05.20 3 M.G. Road 110/11 Intro 1x16 16.059 8.18 20 64/14.03. 30.05.20 4 Thirumudivakkam 110/33 Intro 1x25 6.540 17 20 84/31.05. 04.06.20 5 N.Mettupalayam 110/11 Intro 1x10 10.612 18 20 Sl. Name of Sub Voltage Type Capacity Admn. Date of Cost of No. Station ratio of SS approval commis scheme sioning Rs. in crores 58/06.09. 05.06.20 6 Singadivakkam 110/11 Intro 1x16 11.541 16 20 290/25.1 11.06.20 7 Minnampalli 110/22 Intro 1x16 10.625 1.17 20 284/23.1 12.06.20 8 Asanur (SIDCO) 110/33 Intro 1x16 17.422 1.17 20 Odugathur (UG 47/26.05. 18.06.20 9 110/33 Intro 1x16 14.192 from 33 KV) 16 20 197/07.0 07.07.20 10 Kallakudi 110/11 Intro 1x10 2.195 9.17 20 Veerapuram (UG 292/27.1 09.07.20 11 110/11 Intro 1x16 7.418 from 33 KV) 1.17 20 Moongilpady 77/07.05. 13.07.20 12 110/22 Intro 1x16 10.749 (Thagarai) 18 20 82/8.12.1 20.08.20 13 Ganapathypalayam 110/22 Intro 1x10 13.379 6 20 202/07.0 27.08.20 14 Thirunindravur 110/33 Intro 1x25 3.629 9.17 20 175/15.1 31.08.20 15 Adaiyur 110/11 New 1x10 18.947 2.18 20 22/11.01. 01.09.20 16 Kedar (Veeramur) 110/22 New 1x16 7.704 18 20 ETA Star City 310/26.1 09.09.20 17 110/11 New 1x16 8.990 Mambakkam 2.17 20 279/16.1 28.09.20 18 Elakkiyampatty 110/11 New 1x16 10.108 1.17 20 81/11.12. 07.10.20 19 Natrampally 110/33 New 1x16 21.862 15 20 291/25.1 16.10.20 20 Thirumani 110/11 New 1x16 10.655 1.17 20 40/27.02. 21.10.20 21 Jagathala 110/33 Intro 1x16 12.916 19 20 160/20.1 21.10.20 22 Keeramangalam 110/33 Intro 1x16 3.306 0.18 20 251/26.1 22.10.20 23 K.R.Thoppur 110/22 New 1x25 15.620 0.17 20 19/11.01. 05.11.20 24 Chinnathadagam 110/22 New 1x16 10.765 18 20 Thenoor (UG from 205/19.1 05.11.20 25 110/33 UG 1X16 16.699 33 KV) 1.16 20 Sl. Name of Sub Voltage Type Capacity Admn. Date of Cost of No. Station ratio of SS approval commis scheme sioning Rs. in crores Melapalaiyur 64/24.04. 09.11.20 26 110/33 New 1X16 7.329 (C.Keeranur) 18 20 K.G.Chavady at 53/06.09. 12.11.20 27 110/22 New 1x16 19.916 Pichanur 16 20 Pallikaranai 55/23.07. 19.11.20 28 110/11 New 2x16 18.132 (Indoor) 15 20 138/12.0 15.12.20 29 Poothamedu 110/22 New 1x10 8.324 9.18 20 17/04.04. 16.12.20 30 Karappattu 110/33 New 1x16 7.228 17 20 21/11.01. 18.12.20 31 Thiruporur 110/33 Intro 1x25 3.129 18 20 48/30.08. 30.12.20 32 Minnagar 110/11 New 1x10 5.971 17 20 Bommidi 44/03.03. 31.12.20 33 110/33 UG 1x16 12.682 (UG from 33 KV) 18 20 Vedharaniyam 136/09.0 05.01.20 34 110/11 UG 1x10 23.819 (UG From 33 KV) 6.17 21 Mettur 230/110 KV 166/03.1 08.01.20 35 110/33 Intro 1x25 5.270 SS - (DCW) 2.20 21 Suriyampalayam 94/14.07. 20.01.20 36 110/33 Intro 1x16 5.431 (DCW) 20 21 Gandhinagar 96/14.07. 29.01.20 37 110/33 Intro 1x10 4.456 (DCW) 20 21 Marakkanam 196/10.1 10.03.20 38 (UG From 33 KV) 110/33 UG 1X16 20.872 1.16 21

2021 - 22 - To be commissioned.

Sl. Name of Sub Voltage Type of Capacity Admn. Cost of No. Station ratio SS approval scheme Rs. in crores 1 1/02.01.1 Vembakkam 110/33 Intro 2x16 4.687 8 Kotturpuram 110/ 2x25+ 62/21.07. 2 (Anna centenary New 21.875 33-11 2x16 14 Library) Indoor Sl. Name of Sub Voltage Type of Capacity Admn. Date of No. Station ratio SS approval commis sioning Thachampattu 110/33/ 145/21.0 3 UG 2x16 17.523 (UG from 33 KV) 11 6.17 134/1.09. 4 Padur (Pacifica) 110/11 New 2X16 13.296 18 SIDCO 43/30.08. 5 Chembarambakka 110/11 New 2x16 11.369 17 m (Indoor) 314/28.1 6 Nedungundram 110/11 New 2x16 17.788 2.17 Thirumullaivoyal 117/25.0 7 110/11 New 2X16 22.911 (Indoor SS) 7.18 Arasur (Out door 110/33- 136/12.0 8 New 1X25 19.777 SS) 11 9.18 Kannagapattu 155/0410 9 110/11 New 2X16 8.304 (Sara Jublee) .18 20.27.01. 10 Athipet 110/11 Indoor 2x16 19.771 20

110/ 35/17.06. 11 Papparambakkam New 1x25+ 21.878 33-11 17 1x16 Pulianthope 110/33/ 167/ 12 UG 2X50 40.109 (UG From 33 KV) 11 23.11.15 Kadapperi 110/ 89/15.04. 13 (outdoor to indoor Conv 5.798 33/11 17 SS) 110/ 2x25+ 46/30.08. 14 Kunjalam New 2.761 33-11 2x10 17 266/09.1 15 Mangadu (Intro) 110/33 Intro 2x25 62.594 1.17 ARS Garden at 110/33- 65/24.04. 16 New 1X25 51.546 Maduravoyal 11 18 Velachery Main 110/ 2x25+ 56/28.06. 17 New 74.123 Road (GIS) 33-11 2x16 14 Munusami Salai 15/08.01. 18 110/11 New 2x16 46.021 (GIS) 15 Melpadi 110/ 1X16+ 259/06.1 19 UG 13.458 (UG from 33 KV) 33-11 2X10 1.17 18/11.01. 20 Sevaganapally 110/33 New 1x16 15.04 18 16.827 110/ 1x16+ 53/09.03. 21 Anuppu New 33-11 1X10 18

Sl. Name of Sub Voltage Type of Capacity Admn. Date of No. Station ratio SS approval commis sioning 110/ 1X16+ 149/27.0 22 Kalavai UG 14.045 33-11 2X10 9.18 92/30.07. 23 Meyyanur 110/22 New 3x25 31.788 19 Pudukottai ( 100//21.0 24 110/22 New 2x10 8.757 Kettimedu) 8.19 Thillai Nagar at 507.01.2 25 110/22 New 2x10 20.799 Vaikkalpattarai 0 Avinashipalayam 70/11.06. 26 110/11 New 2x16 9.917 (South) 19 103/26.0. 27 Anna University 110/11 New 2X16 9.376 18 103/29.0 28 Karunya Nagar 110/22 New 2x16 16.934 8.19 Beach Road near 24/07.06. 29 110/22 New 2x10 19.285 Roche park 16 104/31.0 30 Udangudi 110/33 Intro 1x16 2.475 8.19 13/21.01. 31 Singampunary 110/33 Intro 1x16 2.82 20 25/06.04. 32 Erudayampattu 110/22 New 2x10 13.32 17 110/33- 1x16+ 42/30.08. 33 Needamangalam New 16.834 11 2x10 17 93/07.06. 34 Konnaiyur 110/33 Intro 2X16 5.39 18 3/19.01.1 35 Vaduvoor 110/33 Intro 1X16 2.634 9 28/31.01. 36 Kadalangudy 110/33 Intro 1x16 2.748 20 Naduvalur 65/31.05. 37 110/33 UG 2X16 19.919 (UG from 33 KV) 16 Achalpuram 110/33 - 1X16+ 244/24.1 38 UG 20.790 (UG from 33 KV) 11 2x10 0.17 97/07.06. 39 Mettupatti 110/11 UG 2X10 14.942 18 110/33/ 102/26.0 40 Thiruvaiyaru UG 2X16 25.607 11 6.18