Subscriber note: Platts to dual list Gregorian and EFA forward contracts

Platts is proposing to launch additional UK power forward curve assessments effective July 1, 2013. The proposed assessments will be based on the Gregorian calendar and will run in parallel with Platts existing assessments of UK EFA calendar forward contracts during a transitional period, as market liquidity moves from the EFA to the Gregorian calendar. The assessments proposed are: - September 29/30 EFA-Gregorian gap, baseload and peakload - Winter 14/15 Gregorian baseload and peakload - March 30/31 EFA-Gregorian overlap, baseload and peakload - Summer 15 Gregorian baseload and peakload - Winter 15/16 Gregorian baseload and peakload

All assessments will be published in GBP/MWh and also listed in Eur/MWh.

NOTE: Platts seeks response from market participants on the above proposal, on the preferred timeframe for parallel EFA-Gregorian listing, and on suggested dates for an eventual discontinuation of EFA assessments. Platts requests active reporting from the market of Gregorian trades and volumes prior to launch (to 02071766174 or to UKpowercalendar@platts.com) and invites all market participants to contribute to the new Gregorian assessments. Platts will be pursuing further discussions with key stakeholders as part of its ongoing consultation and invites market makers to contact the UK power desk at the earliest opportunity. Please send comments, questions and feedback to UKpowercalendar@platts.com, with copy to PriceGroup@platts.com, by May 31.

UK power desk: Jillian Ambrose (jillian_ambrose@platts.com, 02071766740, Yahoo ukpower_platts), Francis Browne (francis_browne@platts.com, 02071766239), Anna Crowley (anna_crowley@platts.com, 02071766174).