1. UK Gas Statistics Iain MacLeay – Head Energy Balances, Prices and Publications Date 29 September 2011

2. Contents Overview of UK gas flows Production data – admin source Trade data Electricity generation Energy industry use Final consumption Secondary and other data Publication frequency

3. Key data Production declining since 2000 Net import dependency of 38%, but UK still exports 16% of production Use of gas Generation/domestic/other 36% / 35% / 29% Responsible for 81% of domestic heating Accounts for 39% of primary energy supply 45% of UK electricity generation

4. Production Trade Stock change Supply Stats difference Demand Transformation Energy industry use Losses Final consumption Industry Domestic Services Non-energy use Gas Commodity Balance

5. PPRS – admin source National grid / trade data Survey of electricity generators Survey of auto-producers Main gas survey Other gas surveys Other data EU-ETS data

6. UK Production data – PPRS system Petroleum production reporting system Data collected to allow DECC engineers to monitor operation of UK oil and gas fields –field level – mainly for engineers –terminal level – mainly for statistics Companies obliged to report monthly – part of licence agreement Source of UK oil and gas production data, and some trade data

9. UK Trade data Two sources From National Grid/Others –LNG – 3 terminals –Pipelines 3 for imports from Norway 1 for imports from Netherlands 1 for exports to Ireland 1 interconnector with Belgium Customs data

10. UK Gas Trade Map

11. From National grid Long range – Rough (depleted gas field) Medium – mainly salt caverns Short range – LNG at end of pipelines to maintain pressure Published daily on web site – DECC take monthly data Stocks

12. PPRS – admin source National grid / trade data Survey of electricity generators Survey of auto-producers Main gas survey Other gas surveys Other data EU-ETS data

13. Gas for electricity generation Survey of main power producers Used as input for other fuels – so not specifically a gas survey (70 forms on monthly basis, 32 of which have gas data) Survey of auto-producers Again survey of all fuels – (100 forms on a quarterly basis, 75 report gas) Heat production data also obtained Secondary survey data Questions on electricity generation also asked on quarterly gas survey (used for verification)

14. Energy Industry Use Most data from PPRS admin system re gas use in oil and gas extraction From survey of oil refineries Data from Iron & Steel Statistics Bureau for use in blast furnaces (monthly) Data from National Grid re losses

15. Final consumption Survey of main gas suppliers – quarterly for headline data, annual for detailed breakdown – 23 firms account for 95% of gas sales – semi compulsory with new EU legislation Survey of small gas companies – annual with request for likely sales in coming year – 70 firms - voluntary 25% response

17. Additional data Meter point data – 22½ million domestic meters, 300,000 non-domestic meters EU-ETS – statistical returns supplied to UK Environment Agency Price surveys Modelling of effects of temperature on demand

18. Publication frequency Supply – monthly Gas balance – quarterly (no breakdown of industry available, or energy own use) Full gas balance – annual Monthly – web Quarterly/annual – web and paper publication

19. Summary Complex picture Mix of admin data and statistical surveys Best practice keys: –Choose the right data collection method –Examine secondary data