European Transparency Requirements Transmission Workstream 3rd April 2008

European Transparency Drivers Transparency seen as key to liberalization of European gas market Drivers: Compliance with existing EC Regulation 1775/2005 3rd Package of amendments to current Regulation/Directives on gas market liberalization Gas Regional Initiative (GRI) GRI NW Roadmap

GRI NW Transparency Project European Regulator’s Group for Electricity and Gas (ERGEG), of which Ofgem is member, established Gas Regional Initiative in April 2006 Promote further liberalisation of national markets Develop regional solutions as stepping stone to European gas market UK within GRI NW

GRI NW Transparency Project Aim: improve publication of capacity and flow data Transparency project plans developed by TSOs Demonstrate commitment to respond to market requirements Established TSO information release principles e.g. release will not prejudice any TSO customer, TSO or any other stakeholder Operators response to EFET “wish list”/Ofgem transparency questionnaire Agreed information provision extends beyond requirements of EC Regulation 1775/2005

NW GRI Transparency Project Agreed Information Release Capacity Maximum technical capacity of the transmission system Level of interruption probability Daily commercial firm and interruptible capacity Flow Information Daily flow and interruptions Daily prompt allocation information to each shipper Daily aggregate day-ahead nominations Historic gas flow information database Information only refers to cross-border interconnection points and LNG terminals

UK Compliance requirements UK regime largely compliant and frequently exceeds requirements Only 2 gaps identified concerning exit capacity and day ahead nominations Compliance requires provision of day ahead nominations at interconnectors and LNG terminals Bacton (IUK), Bacton (BBL), Moffat, Easington (Langeled), Milford Haven, Isle of Grain publication of maximum, sold and available exit capacity at interconnectors Bacton IUK and Moffat TSOs to publish agreed data set no later than December 2008 Mods required to address information provision gaps

Future Developments Roll out information published to all entry points and relevant Exit points Current focus on capacity but post 3rd Package may include D-1 & D+1 information on supply/demand Nominations, forecasts and realised flows in and out of System “level of detail shall reflect information available to TSO”