Exploration and Production Asset Book 2014 Contents Introduction 3 Our story so far 5 Our business outlook 7 Regional overview 9 UK & the Netherlands 11 Norway 25 Canada 33 Trinidad and Tobago 41 Glossary 46 Centrica Energy Asset book 2014 Introduction Centrica Energy Asset book 2014 Introduction 3 4

Our E&P story started in the East Irish Sea with the discovery of the Morecambe Bay gas field in 1974 by John Bains. As Centrica Energy’s sole asset at the time of the company’s birth in 1997, the Morecambe operation was the springboard for our growth into what is Safety now an E&P business producing 230mboe/d across five countries on both sides of the Atlantic.

Over 1,700 of my colleagues work every day with the united purpose to make our business aspirations a reality, delivering energy not just for today but well into the future. We are united by a common desire to create a culture across Centrica Energy (CE) which can be summed up in five words; safety, high performance and pioneering High performance spirit. We call this the CE Way and it guides everything we do, ensuring that we do our jobs safely, or not at all, we demand the best from one another and we look for better ways to achieve our goals.

The E&P world is one where you can ill afford to stand still if you want to maintain production, never mind grow it. We are working in a challenging environment where, across the globe, industry players see increasing costs from the supply chain, lower productivity in maturing basins Pioneering spirit and less than adequate capital project performance. Our strategy is focused on three regional businesses, which positions us well to compete against this backdrop.

In Norway, we are building on proven exploration per- formance; in the UK and Netherlands we are focused on operational excellence and efficiency to maximise recovery from existing hubs; and in Canada, with our partner Qatar Petroleum International, we are exploiting the full potential of the acreage we have acquired. We recognise that choices have to be made to prioritise where we spend our capital, which over the next three years will be in the region of £2.7 billion. Continued financial discipline will ensure investment continues to be targeted to the best opportunities.

Our Asset Book provides key data on our operations. As well as serving as a useful reference document, we hope it conveys the strength and diversity of the portfo- lio that Centrica Energy has built.

Sarwjit Sambhi Managing Director, Centrica Energy Exploration & Production Centrica Energy Asset book 2014 Our story so far Centrica Energy Asset book 2014 Our story so far 5 6

In the last three years, Centrica Energy has delivered on an ambitious growth agenda, increasing oil and gas production by 50%. Our total production in 2013 was 77.3million barrels of oil equivalent.

At the same time we’ve secured our position as a top gas producer on the UK Continental Shelf. Across the UK and the Netherlands we operate 42 fields, of which 23 are producing. We have a non-operated position in Our story a further 33 fields, of which 22 are in production. We have an established business with operated assets on the Norwegian Continental Shelf, where we have so far had an excellent exploration success rate. One of our six operated fields is already in production, and we have a non-operated position in 13 fields.

In Canada, we completed the C$1billion acquisition of Suncor’s conventional natural gas assets in 2013 along- side our partners Qatar Petroleum International. The deal means we are now a top ten gas producer in the Western Canadian Sedimentary Basin, operating around 7,000 wells.

In Trinidad & Tobago we have completed an extensive seismic programme and are reviewing the results of two appraisal wells. Centrica Energy Asset book 2014 Our Buisiness Outlook Centrica Energy Asset book 2014 Our Buisiness Outlook 7 8

Our Through 2013 we added 155mmboe in total to our 2P reserves, organically and through acquisition. We also have a number of attractive investment options, particularly in Norway and Canada, having increased our 2C resource base by 28% to 771mmboe over the year. However, with rising costs, in the UK in particular, we are targeting savings to keep unit lifting and other cash production costs flat over the next three years.

Against this backdrop, we are being increasingly selective in our investment, concentrating on the most attrac- tive opportunities. An increasing proportion is expected to be directed towards North America. Taking account Business of forward UK gas prices and higher costs, we are targeting organic investment in gas and oil projects of approximately £900million on average over the next three years. We expect near-term production to be in the range of 80-85mmboe per annum (220-233mboe/d). Our current level of committed capital expenditure in the short to medium term gives us flexibility to consider acquisition opportunities, if the economics are attractive and the assets provide a good fit with our existing portfolio, while potentially divesting non-core assets for value.

Outlook Our recent exploration performance has been strong, particularly in Norway with five successes in the last nine wells. Going forward we have a strong portfolio of prospects at all stages of the development hopper. In the UK and the Netherlands we operate or have an interest in 190 licences, and in Norway we have over 90. Across Canada and Trinidad and Tobago we have over 500mmboe of contingent resources. In Canada we own over one million acres of undeveloped leasehold, and in Trinidad and Tobago we are currently partici- pating in four offshore licences.

GLOBAL GAS & OIL PRODUCTION OUTLOOK (MMBOE/A)

100

80 mmboe – 80 85 mmboe range

AMERICAS 60

NORWAY 40 UK & NL 20 TOTAL 0 2009 2010 2011 2012 2013 2014e 2015/ 16e

* All information correct as of 12 May, 2014. Centrica Energy Asset book 2014 Regional Overview Centrica Energy Asset book 2014 Regional Overview 9 10

Regional Overview Centrica Energy has three core regions in UK & the Netherlands, Norway and Canada, as well as assets in Trinidad & Tobago. Each one has a portfolio of producing assets, developments and exploration potential. Centrica Energy Asset book 2014 UK & the Netherlands Centrica Energy Asset book 2014 UK & the Netherlands 11 12 UK and Centrica Energy is one of the top gas producers on the UK Continental Shelf, and the North Sea will continue to be a key part of our portfolio. We want to maximise value from our existing asset hubs, and we will continue to invest in the the Netherlands North Sea to help it reach its potential.

Our assets in the UK/NL range from Chestnut in the Central North Sea to Markham in the Netherlands and the hugely important Morecambe field in the East Irish Sea. We also have a number of significant developments in progress, including Cygnus and the continued expansion of the York area in the Southern North Sea, and we are building on our Markham hub through the Grove development. Our success in recent licensing rounds is also yielding exciting exploration prospects across the whole region, aimed at building on our existing production hubs or core areas to create value.

2013 PRODUCTION:

(£/boe) (£/boe) 83 11.55 12.23 0.15 2013 UNIT LIFTING 2013 DD&A RATE TOTAL RECORDABLE 99.5 AND OTHER CASH INCIDENT FREQUENCY (mboe/d) GAS % PRODUCTION COSTS Centrica Energy Asset book 2014 UK & the Netherlands Centrica Energy Asset book 2014 UK & the Netherlands 13 14

well was drilled in 2009, increasing production and Centrica Non-Operated Fields 205 206 207 002 Brae 003 0030 reserves for the field. A side-track of the exist- Centrica Operated Fields 001 ¯ NORTH ing water injection well was drilled in late 2011 to The Brae complex 200km north east of Aberdeen Centrica Licence Interest increase injectivity and reservoir pressure and has comprises a number of fields developed using a Other Fields 005 proven to be very successful. The contract for the combination of fixed platform and subsea tie-backs. CENTRAL 203 Hummingbird Spirit has been extended until 2016, Gas is exported through the SAGE (Scottish Area

and studies are now underway to evaluate options to Gas Evacuation) system to the SAGE gas plant at 006 007 NORTH SEA optimise production from the field. St Fergus in Aberdeenshire. Centrica Energy has 008 009 Skene non-operated interests ranging from 5% to 8% in the Status: Producing oil. Centrica Energy has created considerable value fields in the area, and 4% in the SAGE pipeline. from its operated assets in the Central Northern Sea Production: 3.1mboe/d The field is subject to Petroleum Revenue Tax. and they continue to be material contributors to our Status: Producing oil and gas. portfolio. Our key hubs in the region are Trees, Chestnut and Armada, while we also have interests Production: 1.9mboe/d net Brae in the Alba, Brae and Beryl assets. Armada 013 Trees 012 Armada comprises three producing fields: Drake, 015 0016 014 Fleming, and Hawkins. These have been developed 016 from a single platform, from which producing satellite Beryl KEY HUBS fields Seymour and Maria have also been developed. The Skene and Buckland fields are subsea develop- Centrica Energy purchased an additional non-oper- ments 230km north east of Aberdeen, tied back to Goldeneye ated interest in these assets from Total in 2012 – this the Apache-operated Beryl complex. Skene is a gas increased the company’s interest in Armada from Armada Trees condensate field, while Buckland is an oil producing 018 11% to 23.6%, in Seymour from 18% to 43% and in field. Centrica Energy has a 33.33% non-operated The Trees area comprises the Birch, Larch, Maria from 35% to 64%. share in both fields and the surrounding acreage. Sycamore Central and Sycamore South fields, 0007 in which Centrica Energy has a 100% operated Producing – Armada: gas/condensate, Status: Status: Producing oil and gas. 019 020 022 interest. Birch, Larch and Sycamore Central, 200km Seymour: oil and gas/condensate, Maria – oil and gas 021 north east of Aberdeen, are subsea developments Production: 1.2mboe/d net Production: 3.1mboe/d net Aberdeen tied back to the Marathon-operated Brae platform. . 023 Sycamore South has been developed using an extended reach well from the CNR-operated Tiffany platform. Further development of Sycamore South, OTHER ASSETS Larch and other potential prospects are currently under evaluation. Appleton 026 Producing oil. 027 Status: Alba 025 028 029 Halley Production*: 1.3mboe/d The producing facilities consist of the Alba North platform, 210km north east of Aberdeen. There are also two subsea tie-back well manifolds. The field is 0 5 10 20 30 40 subject to Petroleum Revenue Tax. 033 Miles 034 Chestnut 035 036 Oil export is by tanker via an associated floating North Central North Sea Chestnut was discovered in 1986 by Premier Oil. In storage unit and Centrica Energy has a non-operated 2003, Centrica Energy acquired a 70% interest in interest of 12.7% in the field, acquired in 2012. the field 200km north east of Aberdeen and became operator. It was brought on-stream in 2008 using Status: Producing oil. the Hummingbird Spirit, the innovative Sevan Marine Production: 2.6mboe/d net 300 floating production vessel. A further production

* Unless stated otherwise, all production figures are 2014 estimates. Centrica Energy Asset book 2014 UK & the Netherlands Centrica Energy Asset book 2014 UK & the Netherlands 15 16

A Fields OTHER ASSETS Centrica Non-Operated Fields SOUTHERN Centrica Operated Fields ¯ The area comprises five operated fields for Centrica Other Fields Energy – Ensign, Ann, Audrey, Alison and Annabel Centrica Licence Interest Western Area 039 – and lies approximately 100km north east of the 035 NORTH SEA 036 037 038 Norfolk coast. Audrey is the main gas processing This area comprises three operated producing fields and export hub for the operated fields, with gas developed as subsea tie backs; Seven Seas, Eris The Southern North Sea plays a key role in Centrica A exported via the LOGGS (Lincolnshire Offshore and Ceres. Energy’s portfolio. Three significant developments Gas Gathering System) pipeline. Ensign, a tight gas The Seven Seas gas field came online in October have achieved first gas in the past three years: reservoir which had remained undeveloped due to 2012. Gas from the field, 60km off the East Yorkshire Ensign (2012), Seven Seas (2012) and York (2013), its complex nature, was brought on stream in 2012. coast, flows via Perenco’s West Sole Alpha platform while first gas at Cygnus – the largest gas discovery Potential infill opportunities around Audrey and before being processed onshore at the company’s in the Southern North Sea in 25 years – is targeted Annabel are currently being worked on, and further Dimlington Terminal at Easington. Planning has for the end of 2015. opportunities around Ensign, Ann and Alison have started on a second well at the field. Our key hubs in the Southern North Sea are Greater also been identified. Cygnus Eris and Ceres, located north west of Dimlington, York, the A Fields and Cygnus, while our other assets 042 The area also comprises four non-operated produc- both came on stream in 2010. 041 043 in the region include the Western Area, Amethyst, 044 E ing gas fields - Victor, Saturn, Mimas and Galleon - in Galleon and Ravenspurn North. which Centrica Energy has an interest of 30%, 22%, Status: Producing gas D 15% and 8.4% respectively. The Victor and Galleon Production: 6.2mboe/d net fields are subject to Petroleum Revenue Tax. KEY HUBS Ravenspurn Status: Producing gas fields 046 York 6.5mboe/d net Amethyst Greater York Production: Markham Centrica Energy has a 9% non-operated interest J The York gas field (York East, South and South East) in Amethyst, located north west of the Dimlington is operated and 100% owned by Centrica Energy Terminal. Future well intervention and brownfield A Fields and utilises existing Centrica Storage Limited (CSL) Cygnus Amethyst opportunities are currently being reviewed. The field infrastructure at the Easington Terminal. First gas The Cygnus field development, 160km north east of is subject to Petroleum Revenue Tax. 047 048 049 K was achieved in March 2013, and the hub, which is the North Norfolk coast, is a non-operated project north of the Rough gas storage field, is an important (Centrica Energy equity 48.75%), which was sanc- Status: Producing gas part of our growing footprint in the region. tioned in August 2012. It is a core asset for Centrica The project involved building and installing a 2,750- Production: 0.3mboe/d net Western Area Energy and we are actively engaged with operator tonne unmanned platform, fabricating and laying a 050 GDF Suez on the project. 20-mile pipeline, and installing more than 50 pieces of major equipment at the Easington terminal. The Cygnus hub is made up of two drilling centres, Ravenspurn North Cygnus Alpha and Cygnus Bravo, for which 10-12 052 There is additional upside potential in the surround- 053 P development wells are planned with drilling due to Ravenspurn North, where Centrica Energy has 054 ing exploration acreage that was applied for and start in 2014. Gas will be exported to the Bacton a 17.8% interest, is located north west of the 0 5 10 20 30 40 awarded in the 26th UK Licensing Round. York West Miles Galleon Terminal for further processing via a new pipeline tied Dimlington Terminal. The field is subject to Petroleum has been added to the prospects inventory. The York into the existing Eagles Transmission System. Revenue Tax. Southern North Sea platform has been constructed so it can receive gas from adjacent fields, creating a regional Centrica There is significant upside potential in Cygnus and Status: Producing gas Energy-controlled hub and increasing throughput with the surrounding acreage, and the development will 1.6mboe/d further infill, exploration and third party projects to serve as a hub for the wider area. Production: maximise value. Centrica Energy and its partners plan to drill two Status: Producing gas wells yearly to explore and appraise the area, starting in 2014. Production: 12.5mboe/d Status: Development project – production targeted late 2015 Petroleum Act 1998 Onshore Licensing 1 March 2014

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LEEDS

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720000 DL003 720000 PEDL210 EUROPA OIL & GAS (WEST FIRSBY) LTD PEDL253 385000 EGDON 385000 DART PEDL210 WEST FIRSBY PEDL200 DART DART PEDL006 710000 PEDL006 IGAS COLD HANWORTH 710000 STIRLING IGAS FIFE PEDL161 TF DART BECKERING SK SCAMPTON NORTH 700000 CLACKMANNANSHIRE 380000 SOUTH LEVERTON 380000 700000 LINCOLNSHIRE AL009 MILTON OF BALGONIE ML007 STAINTON PEDL133 PEDL163 IGAS IGAS DART DART PEDL207 SCAMPTON ARGYLL AND BUTE DART TORKSEY 690000 ARNSFARM 690000 PL179 WELTON PEDL001 AIRTH PEDL210 IGAS ALKANE M DART 375000 ML006 Bevercotes Vent 375000 680000 FALKIRK Whitwell Vent IGAS EXL141 680000 DUMBARTON AND CLYDEBANK M PEDL090 ALTAQUEST NETTLEHAM EAST DUMBARTONSHIRE COURAGE EXL141 NEWTON-ON-TRENT ARGYLL AND BUTE PEDL162 COURAGE REACH BOTHAMSALL PL215 PL199 REEPHAM FISKERTON AIRFIELD EAST LOTHIAN PEDL001 EXL141 INVERCLYDE ONSHORE IGAS EXL294 CITY OF EDINBURGH ALKANE Markham Vent COURAGE EXL294 670000 COURAGE CIRQUE 670000 CALOW PEDL001 PEDL090 NORTH LANARKSHIRE WEST LOTHIAN PL213 FARLEYS WOOD CITY OF GLASGOW ALKANE COURAGE RENFREWSHIRE BARGEDDIE ALKANE PEDL001 PL215 370000 ALKANE ML003 BLACKLAND PA 370000 660000 MIDLOTHIAN NOTTINGHAMSHIRE IGAS 660000 WHISBY M PEDL001 PL199 ARGYLL AND BUTE PEDL130 EGMANTON BLACKLAND PA EAST RENFREWSHIRE PEDL001 ALKANE EGDON NS NT DERBYSHIRE ALKANE M 650000 NR Shirebrook Vent 650000 PEDL150 365000 C.E. EUROPA 365000

NORTH AYRSHIRE 640000 PEDL001 640000 ALKANE SOUTH LANARKSHIRE Old Mill Lane Vent Centrica Energy Asset book 2014 OurUK &story the Netherlandsso far Centrica Energy Asset book 2014 UKOur & story the Netherlandsso far PEDL001 M PEDL001 ALKANE ALKANE SCOTTISH BORDERS Bilsthorpe Vent M EAKRING 630000 PEDL001 PEDL001 CAUNTON 630000 M ALKANE ALKANE 360000 PEDL118 360000 17 18EAST AYRSHIRE EGDON 620000 EXL290 KIRKLINGTON KELHAM HILLS 620000 DART SCALE 1:250,000 PEDL203 NU EGDON 0 5 10 15 20 25 30 35 40 Kms 610000 355000 PEDL202 PEDL206 355000 610000 Annersley Bentinck Vent ALKANE EGDON

600000 SOUTH AYRSHIRE 0 5 10 15 20 25 Mls 600000 IRONVILLE

NORTHUMBERLAND 350000 350000 590000 PEDL199 PEDL255 PEDL208 590000 NW LOW ALKANE/NEWTON NEWTON 440000 445000 450000 455000 460000 465000 470000 475000 480000 485000 490000 495000 500000 505000 510000 515000 520000 525000 530000 535000 540000 545000 550000 580000 580000 DUMFRIES AND GALLOWAY

extending its life further with potential infill drilling. PEDL159 NX DART Work on a well intervention programme is also OTHER ASSETS NORTH TYNESIDE 570000 570000 MORECAMBE underway to maximise near-term production. NEWCASTLE UPON TYNE

The field is subject to Petroleum Revenue Tax. Bowland Shale SOUTH TYNESIDE

560000 In June 2013, Centrica Energy signed an agreement GATESHEAD 560000 BAY Status: Producing gas. with Cuadrilla Resources to acquire 25% of its PEDL SUNDERLAND Production: 23.5mboe/d 165 exploration licence and 22.75% of its EXLNY 269 NZ 550000 licence for the Bowland shale area in Lancashire, 550000 The combined fields of Morecambe Bay remain Areas currently under Licence North West England. The licence itself covers an a cornerstone asset for Centrica Energy, offering area in the region of 1,200km2 near Blackpool on unique flexibility, and the area continues to provide 540000 540000 North Morecambe the Fylde coast. EXL 269 is contained with PEDL 165 a significant portion of the UK’s gas supply. Since County and Unitary Authority Boundaries North Morecambe was discovered in 1976, with first and covers the Elswick gas field, a conventional gas DURHAM 2009, Centrica Energy has embarked on an explo- gas in 1994. It is entirely owned and operated by field which came on stream in 1997 and is currently HARTLEPOOL ration and appraisal programme in Morecambe Bay 530000 530000 Centrica Energy. not producing. to establish the remaining potential of the area. Five KIRKLEATHAM STOCKTON-ON-TEES Oil Field exploration and appraisal wells have been drilled The field, which is adjacent to the South Morecambe Further drilling will be requiredCU toMBR IbetterA understand PEDL068 Oil Discovery 520000 EGDON 520000 and the first 3D seismic survey over the South REDCAR AND CLEVELAND field, also acts as the main transportation hub for the the commercial viability of the discovery, but initial DARLINGTON MIDDLESBROUGH Morecambe field in over 30 years has been com- area. The Rivers, Millom and Dalton fields, operated data suggests that there could be up to 200 trillion Gas Field Gas Discovery pleted. In March 2013, the Rhyl field was brought into by ConocoPhillips,51 are000 0tied back to the normally-un- cubic feet of gas within the licence area. 510000 production, further maximising the use of the existing manned North Morecambe platform. PEDL068 ESKDALE Exploration project. EGDON infrastructure, while we have development options Status: RALPH CROSS There is potential for further satellite developments Coal Bed Methane Field at Knox and Lowry. We also operate the Bains 500000 500000 CLEVELAND HILLS CLOUGHTON field, named after the late John Bains in recognition to produce through this complex and a well interven- of his work to discover the huge gas reserves in tion programme is ongoing to maximise near-term ¯ LOCKTON Mines Gas Developments (active) production from the490 field.000 PL077 M 490000 Morecambe Bay. The hub is now focused on deliv- PEDL120 VIKING ering three one-well subsea tie-back developments MOORLAND Status: Producing gas field and transportation/pro- ISLE OF MAN PICKERING AL006 VIKING Gas Storage Location by 2016, and exploring the remaining exploration cessing hub. 480000 KIRBY MISPERTON 480000 potential underneath the South Morecambe field. 112 PEDL177 NORTH YORKSHIRE MALTON VIKINGMARISHES 3.4mboe/d PL080 PL081 Production: 113 PL079 PL080 VIKING VIKING VIKING VIKING DL005 PL234 TA 470000 VIKING CAYTHORPECAYTHORPE 470000 Knox South Morecambe ! Barrow Terminals SCALE 1:900,000 Rhyl PEDL146 Rhyl DART The field was originally discovered in 1974, with first 460000 Lowry 0 10 20 30 40 50 60 70 80 90 100 110 Kms 460000 EAST RIDING OF YORKSHIRE Rhyl was discovered in 2009 by Centrica Energy and production in 1985. South Morecambe, 39km west YORK brought into production in March 2013. Rhyl, which is See Inset for details of this area of Barrow-in-Furness, is entirely owned and operated North Morecambe SE 0 10 20 30 40 50 60 70 Miles by Centrica Energy. north of the North4 5Morecambe0000 field, has been devel- 450000 Bains oped as a two-well subsea tie-back to the North South Morecambe The field has been developed using seven fixed Morecambe platform. jacket platforms and over 35 development wells. 440000 LANCASHIRE M 440000 EXL269 BRADFORD CUADRILLA ELSWICK Gas is exported via a 36” dedicated pipeline to the In 2013 Centrica Energy successfully drilled the BLACKPOOL LEEDS For further details on the UK onshore, contact either: Barrow Gas Terminals, which are also operated by Whitehaven appraisal well, discovering further gas EXL269 CUADRILLA Toni Harvey tel: 0300 068 6037, email: [email protected]

430000 109 430000 Centrica Energy. reserves 3km to the south of the Rhyl field. The 110 Mike Hawkins tel: 0300 068 6038, email: [email protected] Whitehaven well is currently awaiting a final invest- PEDL165 M M BOWLAND South Morecambe was the company’s first pro- ment decision for development. © Crown copyright 2014. ducing field, and ongoing processing and interpre- 420000 420000 WAKEFIELD tation of seismic surveys will support decisions on Status: Producing gas. Contains Ordnance Survey data © Crown Copyright and database right 2014. KIRKLEES M You may re-use this information (not including logos)free of charge in any Production: 2.8mboe/d410000 Centrica Non-Operated Fields 410000 Centrica Operated Fields M format or medium, under the terms of the Open Government Licence. Centrica Licence Interest 0 2 4 8 12 16 M BARNSLEY M Other Fields Miles To view this licence, visit

SALFORD M 400000 SEFTON Old Boston M www.nationalarchives. gov.uk/doc/open-government-licence/ 400000 Morecambe Bay Bowland Shale Vent EXL253 ALKANE TAMESIDE ST HELENS Parkside Vent MANCHESTER or write to the Information Policy Team, The National Archives, Kew, London KNOWSLEY EXL273 EXL253 TRAFFORD LIVERPOOL GREENPARK ALKANE SHEFFIELD TW9 4DU, or email: [email protected]. 390000 PEDL116 M DOE GREEN STOCKPORT 390000 EXL276 IGAS WARRINGTON WIRRAL BIOGAS Any enquiries regarding this publication should be sent to us at PEDL193 PEDL191HALTON PEDL107 IGAS ALKANE PEDL145 [email protected]. ISLE OF ANGLESEY IGAS IGAS 380000 HALTON 380000 ISLE OF ANGLESEY PEDL184 This document is also available from our website at IGAS PEDL190 M IGAS M https://www.gov.uk/oil-and-gas-onshore-maps-and-gis-shapefiles PEDL197 370000 FLINTSHIRE CELTIQUE 370000 PEDL147 M DART M PEDL189 DART CHESHIRE ABERCONWY AND COLWYN M M 360000 DERBYSHIRE M 360000 EXL203 M PEDL188 PEDL141 DENBIGHSHIRE BIOGAS SEVEN Llay Vent DART PEDL040 NOOKS FARM SH PEDL187 ALKANE SEA SK DART CITY OF STOKE-ON-TRENT 350000 PEDL040 PEDL056 350000 WREXHAM PEDL056 IGAS ALKANE NOTTINGHAMSHIRE LINCOLNSHIRE PEDL186 PEDL185 IGAS PEDL199 PEDL255 DART DART POTTERIES PEDL057 LOW ALKANE/ ALKANE NEWTON M 340000 CITY OF NOTTINGHAM PEDL208 340000 AL010 CROPWELL BUTLER NEWTON PEDL185 DART PEDL254 PEDL204 PEDL078 CITY OF DERBY CAERNFONSHIRE AND MERIONETHSHIRE ALKANE/ BELVOIR DART IGAS PEDL196 PEDL198 NEWTON SJ NEWTON DART DART KINOULTON 330000 STAFFORDSHIRE 330000 LONG CLAWSON PL220 REMPSTONE IGAS PEDL201 PL220 TF EGDON IGAS 320000 320000 LEICESTERSHIRE PEDL078 PEDL195 TELFORD AND WREKIN IGAS DART NORFOLK TG 310000 310000 RUTLAND

SHROPSHIRE CITY OF LEICESTER CITY OF PETERBOROUGH WALSALL 300000 WOLVERHAMPTON 300000

290000 SANDWELL 290000 DUDLEY BIRMINGHAM

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CAMBRIDGESHIRE

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230000 230000

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HERTFORDSHIRE ESSEX

GLOUCESTERSHIRE 210000 MONMOUTHSHIRE BUCKINGHAMSHIRE 210000 PEDL014 BLAENAU GWENT OXFORDSHIRE PEDL212 PEDL148 PEDL211 UK GAS MERTHYR TYDFIL DART ADAMO UK METHANE

200000 NEATH AND PORT TALBOT PEDL218 TORFAEN 200000 PEDL214 ADAMO PEDL215 PEDL149 RHONDDA, CYNON, TAFF CAERPHILLY UK METHANEUK METHANEUK METHANE SWANSEA PEDL014 PontycymmerM UK GAS 190000 190000 PEDL100 NEWPORT PEDL224 SOUTHEND-ON-SEA ADAMO PEDL157 SONOREX SWINDON BRIDGEND PEDL220 SONOREX COASTAL SOUTH GLOUCESTERSHIRE THURROCK CARDIFF SLOUGH GREATER LONDON 180000 PEDL216 180000 WINDSOR AND MAIDENHEAD COASTAL PEDL217 PEDL219 PEDL236 MEDWAY COASTAL COASTAL READING FAIRFAX MEDWAY THE VALE OF GLAMORGAN CITY OF BRISTOL WEST BERKSHIRE TQ 170000 WOKINGHAM 170000 BRACKNELL FOREST PEDL228 PEDL245 MEDWAY NORTH SOMERSET MEDWAY UK METHANE NORTHDOWN

PEDL226 160000 UK METHANE 160000 BATH AND NORTH-EAST SOMERSET WILTSHIRE PEDL250 PEDL252 COASTAL SS ST PEDL227 SU SURREY DL004 PALMERS WOOD PL182 TR COASTAL UK METHANE IGAS BROCKHAM ML021 IGAS KENT 150000 HUMBLY GROVE PL235 IGAS ML018 PEDL247 PEDL248 150000 GAS STORAGE ALBURY KEY BLETCHINGLEY IGAS WEALD PEDL251 MIDMAR PEDL249 HERRIARD PL116 PEDL137 EXL189 (Lingfield)CUADRILLA COASTAL PEDL021 COASTAL PEDL225 EUROPA MAGELLAN LINGFIELD EXL189 (Cowden) CUADRILLA IGAS HUMBLY GROVE FAIRFAX GOODWORTH PEDL143 PEDL246 140000 MAGELLAN COWDEN 140000 DL002 PL233 IGAS IGAS GODLEY BRIDGE STOCKBRIDGE PEDL247 PEDL235 PEDL243 CUADRILLA PL249 IGAS CELTIQUE IGAS PEDL231 ASHDOWN HAMPSHIRE BALCOMBE 130000 SOMERSET AVINGTON CELTIQUE 130000 PEDL234 PEDL070 CELTIQUE IGAS LOMER BOLNEY PEDL244 HEATHFIELD CUADRILLA 120000 WEST SUSSEX BAXTERS COPSE 120000 PEDL126 PL240 PEDL233 EAST SUSSEX NORTHERN IGAS IGAS PL205 HORNDEAN IGAS CITY OF SOUTHHAMPTON PL211 09 19 29 39 49 59 69 79 89 99 IGAS SINGLETON STORRINGTON 110000 PEDL256 PEDL155 Index to National Grid numbers 110000 NORTHERN NORTHERN PEDL232 CELTIQUE BRIGHTON AND HOVE

CITY OF PORTSMOUTH LIDSEY 08 18 28 38 48 58 68 78 88 98 100000 DORSET 100000 DEVON PL089 PEDL238 PL241 KEY PERENCO NWE POOLE BOURNEMOTH 07 17 27 37 47 57 67 77 87 97 WADDOCKS CROSS 90000 PL259 90000 WAREHAM PERENCO PEDL239 PL090 PEDL237 NWE EGDON ISLE OF WIGHT EGDON WYTCH FARM 06 16 26 36 46 56 66 76 86 96 PEDL240 PEDL239 NORTHERN NWE 80000 ML005 80000 KIMMERIDGE PERENCO SX SY SZ TV 05 15 25 35 45 55 65 75 85 95 70000 70000 04 14 24 34 44 54 64 74 84 94

TORBAY 60000 CORNWALL 60000 CITY OF PLYMOUTH 03 13 23 33 43 53 63 73 83 93

50000 50000 02 12 22 32 42 52 62 72 82 92 SW 40000 40000 01 11 21 31 41 51 61 71 81 91

30000 00 10 20 30 40 50 60 70 80 90 30000

20000 20000

140000 150000 160000 170000 180000 190000 200000 210000 220000 230000 240000 250000 260000 270000 280000 290000 300000 310000 320000 330000 340000 350000 360000 370000 380000 390000 400000 410000 420000 430000 440000 450000 460000 470000 480000 490000 500000 510000 520000 530000 540000 550000 560000 570000 580000 590000 600000 610000 620000 630000 640000 650000 660000 670000 680000 690000 700000 710000 720000 730000 740000 750000 760000 770000 780000 790000 800000 810000 820000 Centrica Energy Asset book 2014 UK & the Netherlands Centrica Energy Asset book 2014 UK & the Netherlands 19 20

Centrica Non-Operated Fields B Centrica Operated Fields 5505 ¯ 039 Centrica Licence Interest D A C Other Fields 038 B

F3-FA F3-FA NETHERLANDS The F3-FA field was originally discovered in 1971 by NAM, but not developed due to its geological com- H plexity and challenging economics. Centrica Energy Centrica Energy operates two key hubs in the Dutch acquired operatorship through the Venture trans- North Sea, the Greater Markham Area (GMA) and action and the company now holds a 58% working G F3-FA, from its Hoofddorp office in the Netherlands. interest in the field. The F3-FA field came on stream in January 2011 via the largest self-installing platform in the North Sea, and current production from the field comes via a single development well. Gas from 044 E F Greater Markham Area the field is transported via the Northern Offshore Gas (GMA) Transport (NOGAT) pipeline to the Den Helder gas D processing plant. F3-FA has been named the richest The GMA hub comprises of the Markham, Chiswick, well in the Dutch offshore sector for two consecutive G Grove and Kew fields. Centrica Energy also has years. non-operated interests in the Windermere and J3C fields within the GMA. The Markham J6-A platform Status: Producing gas serves as the processing hub for the GMA fields. Production: 4.7mboe/d net Markham was discovered in 1987 by Ultramar and production began in 1992. Centrica Energy acquired Markham 37.5% equity in the unitised field through the Venture J M transaction in 2009. All production is transported via the Westgastransport (WGT) pipeline system to the Den Helder gas processing plant. Chiswick was discovered in 1984, with Centrica Energy acquiring 100% equity in the field through the 049 K L Venture transaction. The field was developed using hydraulic fracturing of long horizontal wells and came on stream in 2007. There are now four operational wells.

Grove was discovered in 1971, with Centrica Energy 050 becoming the operator when it acquired an 85% stake through the acquisition of Newfield Petroleum Den Helder in 2007. The company acquired a further 7.5% from . Sojitz in 2008. The field was brought on stream in 20 07. 054 Kew was discovered in 1988 by Ultramar and Centrica Energy acquired 100% equity in the field in 2006. An appraisal well was drilled in 2009, with a Q further development well drilled in 2013. The subsea P 053 well is tied back to the Chiswick platform and pro- duction commenced in January 2014.

Status: Producing gas . Hoofddorp 0 5 10 20 30 40 Production: 22.3mboe/d net O Miles

Netherlands Centrica Energy Asset book 2014 OurUK &story the Netherlandsso far Centrica Energy Asset book 2014 UKOur & story the Netherlandsso far 21 22 UK/NL OPERATED ASSETS

PRODUCING ASSETS PRODUCING ASSETS

ASSET CE E&P OPERATOR STATUS PRODUCTION RESERVES ASSET CE E&P OPERATOR STATUS PRODUCTION RESERVES % (actual 2013, mboe net) (end 2013, net mboe) % (actual 2013, mboe net) (end 2013, net mboe)

NORTH CENTRAL NORTH SEA Western Area 4,198 22,230 2P

Greater Kittiwake Area 899 3,759 2P - Eris 54.00 CE E&P Producing 282

- Kittiwake 0.00 CE E&P Sold 28/02/14 61 - Ceres 90.00 CE E&P Producing 754

- Goosander 0.00 CE E&P Sold 28/02/14 341 - Seven Seas 90.00 CE E&P Producing 808

- Grouse 0.00 CE E&P Sold 28/02/14 313 - York 100.00 CE E&P Producing 2,355 - Mallard 0.00 CE E&P Sold 28/02/14 183

NETHERLANDS

Trees Area 325 1,750 2P Greater Markham Area 7,010 48,311 2P

- Birch 100.00 CE E&P Producing 161 - Markham 37.53 CE E&P Producing 159

- Larch 100.00 CE E&P Producing 14 - Chiswick 100.00 CE E&P Producing 5,170

- Sycamore 100.00 CE E&P Producing 150 - Grove 92.50 CE E&P Producing 1,681

- Kew 100.00 CE E&P Producing 0 Chestnut Area 1,661 3,330 2P (Jan 2014)

- Chestnut 69.88 CE E&P Producing 1,661

Nothern Fields 2,011 4,850 2P

MORECAMBE BAY - F3-FA 58.00 CE E&P Producing 2,011

South Morecambe 10,979 50,963 2P Area

- South Morecambe 100.00 CE E&P Producing 10,979

- Bains 86.80 CE E&P Currently shut in 0

North Morecambe 1,814 24,501 2P Area

- North Morecambe 100.00 CE E&P Producing 1,233

- Rhyl 100.00 CE E&P Producing 581

SOUTHERN NORTH SEA

A Fields Area 1,523 10,008 2P

- Annabel 100.00 CE E&P Producing 637

- Audrey 100.00 CE E&P Producing 33

- Ann/Alison 100.00 CE E&P Currently shut in 0

- Ensign 100.00 CE E&P Producing 854 Centrica Energy Asset book 2014 OurUK &story the Netherlandsso far Centrica Energy Asset book 2014 UKOur & story the Netherlandsso far 23 24 UK/NL NON-OPERATED ASSETS

PRODUCING ASSETS PRODUCING ASSETS

ASSET CE E&P OPERATOR STATUS PRODUCTION RESERVES ASSET CE E&P OPERATOR STATUS PRODUCTION RESERVES % (actual 2013, mboe net) (end 2013, net mboe) % (actual 2013, mboe net) (end 2013, net mboe)

NORTH CENTRAL NORTH SEA Southern Area 23 41 2P

Armada Area 2,037 1,871 2P - Davy East 40.00 Perenco Producing 14

- Armada 23.58 BG Producing 890 - Thames 10.00 Perenco Shut in 9

- Maria 64.00 BG Producing 605

- Seymour 43.00 BG Producing 542 NETHERLANDS

Greater Markham Area 41 181 2P

Beryl Area 594 1,927 2P - Windermere 20.00 RWE Dea Producing 16

- Skene 33.33 ExxonMobil Producing 452 - J3aC 4.03 Total Producing 24

- Buckland 33.33 ExxonMobil Producing 142

Brae Area 754 3,607 2P - Brae West 8.00 Marathon Producing 219 DEVELOPMENT ASSETS - Brae NSC 8.00 Marathon Producing 189 ASSET CE E&P OPERATOR STATUS KEY MILESTONES 2C RESOURCES - Brae East 7.32 Marathon Producing 280 % (anticipated year) (net mboe) - Brae Beinn 8.00 Marathon Producing 19 SOUTHERN NORTH SEA - Braemar 5.00 Marathon Producing 47 - Cygnus 48.75 GDF Current Project First Prod 2015 6 1 , 8 6 2 - SAGE 4.00 Mobil Pipeline & NA (inc. 52,662 2P) Terminal - Olympus 100.00 CE E&P Development Option 5,321 2P

- Annabel Infill 100.00 CE E&P Development Option First Prod 2015 9,000

Other Areas 784 5,703 2P - York 100.00 CE E&P Appraisal 12,600

- Alba 12.65 Chevron Producing 751 -Ravenspurn North 17.75 BP Development 4,700

- Halley 40.00 Talisman Producing 33 - Pegasus 55.00 CE E&P Discovery 5,900

- Humphrey 40.00 GDF 1,200 SOUTHERN NORTH SEA

A Fields Area 1,023 4,567 2P CENTRAL AND NORTHERN NORTH SEA

- Saturn 22.00 ConocoPhillips Producing 532 - Chestnut Infill 69.88 CE E&P Development Option 10 800 - Victor 30.00 ConocoPhillips Producing 280

- Galleon 8.40 Shell Producing 174 MORECAMBE BAY

- Mimas 15.00 ConocoPhillips Producing 37 - Lowry 100.00 CE E&P 2,900

Western Area 654 1,905 2P - Knox 100.00 CE E&P 4,600 - Ravenspurn North 17.75 BP Producing 363

- Babbage 0.00 Eon-Rhurgas Sold 09/09/13 158 NETHERLANDS - Amethyst E&W 8.95 BP Producing 133 - Grove infill 92.50 CE E&P Development Option 8,988

- Grove NE 92.50 CE E&P Development Option 9,512 Centrica Energy Asset book 2014 Norway Centrica Energy Asset book 2014 Norway 25 26

Since entering Norway in 2006, Centrica Energy has built an established business Norway on the Norwegian Continental Shelf. We have had several years of successful growth through acquisitions, discoveries and a high number of licence awards and now have a portfolio of operated and non-operated assets.

Centrica Energy has non-operated interests in major Norwegian fields such as Statfjord and Kvitebjørn, and also operates the Vale field with 50% equity. We have an interest in more than 60 licences, and we are currently participating in a seven-well drilling programme, of which three are operated by Centrica Energy.

2013 PRODUCTION:

(£/boe) (£/boe) 54 14.30 13.95 1.11 2013 UNIT LIFTING 2013 DD&A RATE TOTAL RECORDABLE 65.5 AND OTHER CASH INCIDENT FREQUENCY (mboe/d) GAS % PRODUCTION COSTS Photo: OyvindPhoto: Hagen, Statoil Centrica Energy Asset book 2014 Norway Centrica Energy Asset book 2014 Norway 27 28

0036 ¯ 210 211 0035

Statfjord 0034

Kvitebjørn Centrica Energy’s Heimdal share was reduced from Valemon 33.8% to 28.8%. From late 2014, the Heimdal facili- PRODUCING ties will also process rich gas from the Valemon field.

Status: All Heimdal production wells were shut in ASSETS November 2011. The satellite fields are all producing.

003 0032 0030 0031 Statfjord 002 Vale Statfjord, 180km west of Sognefjord in Norway, was The Vale field is the first producing field operated by discovered by Mobil in 1974 and has been producing Centrica Energy on the Norwegian Continental Shelf. since 1979. By the end of 2013, the field had pro- The operatorship was transferred to Centrica Energy duced in excess of 5billion barrels of oil equivalent. in 2012. The field is operated by Statoil and Centrica Energy Vale, around 80km west of Stavanger, is a gas/con- Frigg currently owns a 34.3% interest in the field as well densate field developed via a single subsea well tied as interests in the Statfjord Nord, Statfjord Øst back by a 16km pipeline to the Heimdal Gas Centre. Peik Vale and Sygna satellite fields. The lifetime of Statfjord Production of Vale commenced in 2002, and the A has been extended to 2020 from 2017. The field 008 Heimdal initial life of the field was anticipated to be 10 years. straddles the UK and Norwegian sectors of the 009 0027 The authorities have recently given consent for a North Sea, and the UK area of the field is subject to lifetime extension for Vale to June 2021. 0025 0026 Petroleum Revenue Tax. In 2013 Centrica Energy divested 25.80% of its Producing oil & gas interest to LOTOS, and now holds 50% equity in the Status: 0028 Vale field. 0024 Stavanger Production: 24.2mboe/d net Status: Producing gas/condensate Production: 5.5mboe/d net Kvitebjørn The Kvitebjørn field is a high pressure, high temper- ature field that was discovered by Statoil in 1994, 015 0016 0017 Heimdal with production commencing in 2004. It is located 016 0018 0019 Heimdal was discovered in 1972 and production in the Viking Graben, east of the Gullfaks fields, and 0015 started in 1986. The Heimdal field and facilities, Centrica Energy acquired a 19% non-operated inter- around 80km west of Stavanger, are currently oper- est from Statoil in 2012. ated by Statoil. In 2000, the facilities were converted 0020 Kvitebjørn has been developed with a combined to enable processing of third party gas and now processing, drilling and living quarters platform. all production comes from third party fields. The Condensate is exported via a dedicated 16” pipeline Heimdal facilities consist of two platforms, a riser to the Troll oil pipeline and then on to the Mongstad platform and the Heimdal Gas Centre. The Heimdal Terminal. Rich gas is exported via a dedicated 26” Centrica Non-Operated fields Gas Centre is an integral part of the Gassled gas pipeline to Kollsnes for gas and NGL processing and export system and is connected to landing points Centrica Operated Fields is exported from Kollsnes to the UK and Europe. 0007 both in the UK (St. Fergus) and Europe. Condensate Other Fields 0011 Additional infill drilling is ongoing and will include one 022 0009 is exported to Brae and on to Cruden Bay in the UK well at the Kvitebjørn East reservoir segment. The 021 0008 C00e1n0trica Licence Interest via the Forties Pipeline System. outcome of the well may trigger further development Centrica Energy acquired Marathon’s equity in of the Kvitebjørn East structure. 0 5 10 20 30 40 Heimdal, Skirne and Peik in 2008 and further Miles Producing gas and condensate. increased its equity in 2012 through its acquisition Status: Norway from Statoil. After the divestment to LOTOS in 2013, Production: 26.8mboe/d net Centrica Energy Asset book 2014 Norway 29

Further drilling is currently ongoing to prove up addi- tional volumes on the Butch structure, and concept DEVELOPMENTS select is planned for late 2014.

Status: Development project - first production Valemon expected in 2018 subject to final investment decision. Valemon is a high pressure, high temperature development operated by Statoil. Centrica Energy acquired a 13% non-operated interest from Statoil in 2012. The development concept is a fixed steel Frigg Gamma Delta (FGD) production platform with a simplified separation process, with the platform remotely controlled from Centrica Energy acquired 40% of PL442 from Statoil the nearby Kvitebjørn field or from shore. in 2012 and the block contains two undeveloped dis- coveries, Gamma and Delta, collectively called Frigg Condensate will be exported to Kvitebjørn, while rich Gamma Delta (FGD). The FGD field is predominantly gas will be exported via the Huldra/Heimdal system an oil discovery that is located north east of Heimdal. and processed at Heimdal. Further studies of the FGD development in 2013 The Valemon North exploration well was spudded in increased the expected recoverable volumes and September 2013, with results expected in 2014. reduced the projected capital expenditure, making a standalone development of the FGD field a poten- Development project - first production Status: tially attractive option. planned for early 2015. Located in an area with several smaller oil and gas discoveries, Centrica Energy is also exploring the potential upsides of a coordinated development of Maria one or more of the additional discoveries alongside The Maria field was discovered by Wintershall in FGD. Concept selection is planned for 2015, followed 2010. The exploration well in Maria South encoun- by a field development plan and final investment tered light oil, and the Maria North structure was decision in 2016. subsequently successfully appraised in 2012. Maria, In 2013 Centrica Energy divested 10% of its interest southeast of the Åsgard field in the Norwegian Sea, in FGD to LOTOS, but remains operator of the field. is operated by Wintershall (50%), while Centrica Energy is a partner with 20%. Status: Development project The field development plan and final investment deci- sion are both scheduled for late 2014.

Status: Development project – first production Fogelberg expected in 2018 subject to final investment Fogelberg was Centrica Energy’s first operated decision. exploration well in Norway. It was drilled in 2010 and discovered high pressure, high temperature gas condensate. Centrica Energy has a 40% interest in Fogelberg, located 18km north of Åsgard and 30 Butch km south of Heidrun. A concept select decision is Centrica Energy is the operator of the Butch licence expected mid-2014. with a 40% interest. An exploration well at Butch, Development project - first production located 220km off the Norwegian coast, was drilled Status: expected in 2019 subject to final investment in the second half of 2011. decision. Centrica Energy Asset book 2014 Norway Centrica Energy Asset book 2014 Norway 31 32 NORWAY ASSETS

PRODUCING ASSETS DEVELOPMENTS

ASSET CE E&P % OPERATOR STATUS PRODUCTION RESERVES ASSET CE E&P OPERATOR STATUS KEY 2C (actual 2013, mboe net) (end 2013, net mboe) % MILESTONES RESOURCES (anticipated year) (net mboe) STATFJORD AREA 10,014 79,141 2P 49,709 - Statfjord UK 100.00 CE E&P Producing 3,991 KVITEBJØRN AREA (inc. 21,408 2P) - Statfjord Norway 23.12 Statoil Producing 5,396 - Valemon 13.00 Statoil Current Project First prod 2015 21,408 2P - Statfjord Øst 11.56 Statoil Producing 311 - Kvitebjørn Øst 19.00 Statoil Current Project First prod 2015 14,300 - Statfjord Nord 23.12 Statoil Producing 266 - Kvitebjørn second stage 19.00 Statoil Development 6,800 - Sygna 12.71 Statoil Producing 49 compression Option

- Nokken 19.00 Statoil Discovery 7,20 0

HEIMDAL AREA 2,858 6,476 2P

- Heimdal 28.80 Statoil Sold 30/12/13 0 OTHER AREAS 111,320

- Vale 50.00 CE E&P+ Producing 1,599 (inc. 49,220 2P) (Statoil) - Maria 20.00 Wintershall Development FID 2014 28,680 2P - Skirne 0.00 Total Sold 30/12/13 1,049 Option

- Atla 0.00 Total Sold 30/12/13 211 - Butch 40.00 CE E&P Recent Discovery Discovered 2011 20,538 2P

- Frigg Gamma Delta 30.00 CE E&P Development 29,800 Option KVITEBJØRN 11,039 75,468 2P - Fogelberg 28.00 CE E&P Development FID 2017 23,800 - Kvitebjørn 19.00 Statoil Producing 11,039 Option

- Rind 30.00 Total Development 8,500 Option Centrica Energy Asset book 2014 Canada Centrica Energy Asset book 2014 Canada 33 34

Canada is Centrica Energy’s newest region and is experiencing significant growth after Canada the transformational acquisition of Suncor Energy’s Canadian onshore conventional assets. Centrica Energy entered into a partnership with Qatar Petroleum International (QPI) to acquire the assets with Centrica Energy holding a 60% interest, making us a top ten gas producer in the Western Canadian Sedimentary Basin.

Over the last three years, our Canadian business has grown from a predominantly shallow gas producer to having a broad portfolio of assets which reside within five large, mainly operated regions; South, North, Hanlan-Robb, Foothills and Peace River Arch.

In May 2014, Centrica agreed to sell 40% of its wholly owned Canadian natural gas business to QPI, fully aligning the partners’ interests in the region.

2013 PRODUCTION:

(£/boe) (£/boe) 90 11.29 6.20 0.14 2013 UNIT LIFTING 2013 DD&A RATE TOTAL RECORDABLE 35.7 AND OTHER CASH INCIDENT FREQUENCY (mboe/d) GAS % PRODUCTION COSTS Centrica Energy Asset book 2014 Canada Centrica Energy Asset book 2014 Canada 35 36

South Region Hanlan-Robb Region Foothills Region The South region consists primarily of mature, The Hanlan-Robb region 180km south west of The Foothills region in south west Alberta includes shallow gas producing assets in south east Alberta Edmonton consists exclusively of newly-acquired four major areas – Wildcat Hills, Burnt Timber, and south west Saskatchewan. Centrica Energy Suncor assets, mostly operated by Centrica Energy. Panther and Crossfield. All production is operated, operates all of these assets, located 250km south Production is primarily sour gas from the deep with the exception of some minor assets in the east of Calgary and consisting of over 5,000 pro- carboniferous Turner Valley formation, with addi- Panther field. The majority of the gas production ducing shallow gas wells. The main fields include tional gas production from multiple Jurassic and is from the deep carboniferous Turner Valley forma- Alderson, Medicine Hat and SW Saskatchewan. Cretaceous aged formations. tion, with additional liquids-rich gas from shallower Cretaceous zones. Centrica Energy wholly owns The gas is produced at sales quality and requires Centrica Energy also operates large gas processing and operates the Wildcat Hills gas plant (125 mmcf/d only compression, with no further processing. The facilities in the Hanlan area, and has both sour and capacity). region has been developed over several decades sweet gas processing capability. through densely drilled vertical wells. Centrica Energy’s near-term focus will be on devel- Plans are underway to expand the sweet gas pro- oping significant upside potential in the Turner Valley Centrica Energy’s initial focus is on the Alderson cessing capability at the Hanlan-Robb plant due to formation in both the Wildcat Hills and Panther fields. field, which realises higher initial production rates the significant industrial activity in the region, and for new wells compared with other fields in the area. Centrica Energy is currently assessing its level of Status: Producing gas. Further development through infill drilling in the other participation in the expansion. fields will take place in the future. Production: 15.3mboe/d Status: Producing oil and gas. Status: Producing gas Production: 12.2mboe/d Production: 13mboe/d Peace River Arch ­Region Other than a few minor assets, this vast, 480km region parallel to the Alberta-British Columbia pro- North Region vincial boundary consists of newly-acquired assets from Suncor. There are eight major producing areas The North region consists of a wide variety of fields, in the region, predominantly operated by Centrica including the gas-dominated areas of Carrot Creek, Energy, with one residing in Alberta (Glacier) and the Gilby and Shallow Gas/Coal Bed Methane (CBM), remainder in British Columbia – Grizzly, Boundary and the oil-dominated areas of Ferrier and Cym Pem. Lake, Parkland, Laprise, Bougie, Clarke Lake and The majority of this region in Central Alberta - cov- Yoyo. Following the Suncor transaction, Centrica ering a 160,000km2 area - is operated by Centrica Energy now owns and operates four gas plants in Energy. The infrastructure in the area includes gas the Progress, Parkland and Boundary Lake areas. processing facilities at Ferrier, Gilby, Carrot Creek, The Glacier, Boundary and Parkland fields have Watelet and Wood River, as well as oil facilities at significant development opportunities in the Doig Ferrier. and Montney formations, which are being success- fully developed through horizontal well, multi-stage The North region is expected to be the most active fracturing techniques. This area has the potential for for near- and medium-term development, including development over several years. projects in the Gilby and Carrot Creek areas. Status: Producing gas Status: Producing oil, gas and gas liquids Production: 11mboe/d Production: 14.5mboe/d Centrica Energy Asset book 2014 Canada 37

WCSB Centrica acreage

Clarke Lake Laprise Boundary Lake Grizzly Glacier

Hanlan-Robb Carrot Creek Ferrier/Gilby Wildcat Hills Wood River Calgary

Alderson Medicine Hat

Canada

Centrica Energy Asset book 2014 Canada Centrica Energy Asset book 2014 Canada 39 40 CANADA ASSETS

PRODUCING ASSETS PRODUCING ASSETS

ASSET CE E&P % OPERATOR STATUS PRODUCTION 2P RESERVES ASSET CE E&P % OPERATOR STATUS PRODUCTION 2P RESERVES (Anticipated 2014, (End 2013 net mboe) (Anticipated 2014, (End 2013 net mboe) gross mboe) gross mboe)

SOUTH REGION 72.6 4,751 55,241 PEACE RIVER ARCH 69.2 4,085 39,838 REGION Medicine Hat 76.9 CE Producing 3,278 Glacier 77.5 CE Producing 741 Alderson 71.6 CE Producing 1,274 Grizzly 46.2 CE/Others Producing 710 SW Saskatchewan 36.8 CE Producing 195 Boundary 71.9 CE/Others Producing 583 Other South Areas 9.8 CE Producing 4 Parkland 35.5 CE/Others Producing 163

Laprise 100.0 CE Producing 1,126 NORTH REGION 64.1 5,356 55,986 Bougie 100.0 CE Shut-in 0 Ferrier 94.0 CE Producing 1,296 Clarke Lake 71.7 CE/Others Producing 684 Shallow Gas/CBM 56.2 CE Producing 1,286 Yoyo 78.2 CE/Others Shut-in 0 Carrot Creek 69.8 CE Producing 991 Other PRA Areas 52.8 CE/Others Producing 78 Gilby 49.7 CE Producing 734

Craigmyle 79.6 CE Producing 316 TOTAL REGION 263,035 Cyn Pem 58.3 CE/Vermillion Producing 228 (Including QPI share) Other North Areas 37.4 CE/Others Producing 505 TOTAL REGION 210,153 (Excluding QPI HANLAN-ROBB 48.5 4,475 55,986 share) * REGION

Stolberg 54.0 CE Producing 2,555 * In May 2014, CE agreed to sell 40% of its wholly owned Canadian natural gas business to QPI. Hanlan 51.7 CE Producing 1,901

Other Hanlan Areas 16.7 CE/Others Producing 19

FOOTHILLS REGION 63.2 5,689 55,986

Wildcat Hills 94.3 CE Producing 3,479

Panther 51.3 CE/Shell Producing 1,042

Burnt Timber 62.9 CE Producing 794

Crossfield 58.5 CE Producing 243

Other Foothills Areas 42.1 CE/Others Producing 131 Centrica Energy Asset book 2014 Trinidad & Tobago Centrica Energy Asset book 2014 Trinidad & Tobago 41 42

Trinidad Centrica Energy has built a sizeable business in Trinidad & Tobago (T&T) since 2009, when its first production sharing contract (PSC) was signed. The T&T portfolio includes non-operated production at NCMA-1 (North Coast Marine Block), as well as operated exploration and development positions in Block 22, NCMA-4 and Blocks 1a and 1b. In 2013, Centrica Energy carried out a two-well appraisal drilling programme in Block 22 and Tobago and NCMA-4, and the results from these wells are currently being evaluated.

2013 PRODUCTION:

(£/boe) (£/boe) 100 4.37 5.86 0 2013 UNIT LIFTING 2013 DD&A RATE TOTAL RECORDABLE 10.9 AND OTHER CASH INCIDENT FREQUENCY (mboe/d) GAS % PRODUCTION COSTS Centrica Energy Asset book 2014 Trinidad & Tobago Centrica Energy Asset book 2014 Trinidad & Tobago 43 44

PRODUCING DEVELOPMENTS ASSETS Block 22 Centrica Energy holds a 90% interest in Block 22, NCMA-1 located 25km north of Tobago. The block holds two gas discoveries, Cassra and Sancoche, as well as NCMA-1 is located 60km north of Trinidad and significant further exploration potential. Resource contains six gas fields. They were discovered in estimates are currently being finalised following the late 1970s and early 1980s, and were brought appraisal drilling in 2013. on stream in 2002. Centrica Energy has a 17.3% interest in NCMA-1. The NCMA fields have been Status: Development project developed through two platforms, and a 107km pipeline runs from the fields to Atlantic LNG at Point Fortin. NCMA-4 Status: Producing gas NCMA-4, 80% owned by Centrica Energy, lies 50km Production: 11.2mboe/d net west of Tobago and holds two gas discoveries, Orchid and Iris. The development also has significant exploration potential in the Jasmine prospect. The Iris field was appraised in 2013 and new discoveries were made in Iris deep sands. Fields and prospects in NCMA-4 will be developed jointly with Block 22, with a sharing of export infrastructure to the destina- tion market.

Status: Development project

Blocks 1a and 1b Blocks 1a and 1b are located 20km west of Trinidad in the Gulf of Paria. Block 1a contains three gas discoveries, while Block 1b holds an exploration prospect. The fields are close to existing onshore infrastructure and negotiations are ongoing with local gas buyers to commercialise the resources on these PSC blocks.

Status: Development project

Trinidad & Tobago Centrica Energy Asset book 2014 Trinidad & Tobago Centrica Energy Asset book 2014 Glossary 45 46 TRINIDAD & TOBAGO ASSETS

PRODUCING ASSETS

ASSET CE E&P OPERATOR STATUS PRODUCTION RESERVES % (Actual 2013, (end 2013, mboe net) net mboe) NORTH COAST GLOSSARY MARINE AREA - NCMA 1 17.31 BG Producing 3,982 21,355 2P 2C Resources: Already discovered P50 contingent resource 2P Reserves: Proven and probable reserves Barrel of oil equivalent DEVELOPMENT ASSETS boe: CE E&P: Centrica Energy Exploration & Production DD&A: Depreciation, depletion & amortisation ASSET CE E&P OPERATOR STATUS KEY MILESTONES 2C RESOURCES Front End Engineering & Design % (anticipated year) (net mboe) FEED: - Block 22 90.00 CE E&P Development 139,600 FID: Final Investment Decision (Cassra, Sancoche Option GMA: Greater Markham Area & Iris) Lifting cost: Field operating costs, including tariff - Block 1a & 1b 80.00 CE E&P Development 30,000 LNG: Liquefied Natural Gas (Anole, Iguana, Option E&W Zandolie) mboe: Thousands of barrels of oil equivalent

- NCMA 4 80.00 CE E&P Development 24,400 mmboe: Millions of barrels of oil equivalent (Orchid & Iris) Option mmscf/d: millions of standard cubic feet of gas per day Net: Centrica equity share NCMA: North Coast Marine Area licence blocks in Trinidad and Tobago NOGAT: Northern Offshore Gas Transport NUI: Normally Unmanned Installation P50 Resources: Best estimated remaining life of field production from a development/opportunity. PRT: Petroleum Revenue Tax Prospective resources: Estimated undiscovered resources from exploration PSC: Production Sharing Contract Remaining recoverable resources: The total estimated volumes to be produced T&T: Trinidad and Tobago Total Recordable Incident Frequency (TRIF): Total recordable injury cases per 100,000 hours worked. WGT: West Gas Transport system in the Netherlands WCSB: Western Canadian Sedimentary Basin Centrica Energy iQ Building 15 Justice Mill Lane Aberdeen AB11 6EQ Main switchboard Tel: +44 (0)1224 415000 Centrica Energy corporate affairs Tel: +44 (0)1753 494086 Centrica plc investor relations Tel: +44 (0)1753 494900 www.centricaenergy.com/upstream