SUBSCRIBER NOTE: Platts transitions UK power seasons to Gregorian calendar

Platts has revised its methodology to make changes to the calendar basis of some of its UK power assessments, reflecting the UK power market's transition from EFA trading to the Gregorian calendar from November 1. Platts now assesses seasons from Winter 14/15 and beyond normalized to a Gregorian calendar product. Please note that all forward symbols for the affected delivery periods remain unchanged. Platts may include transactions and firm trade indications for an EFA product for assessment purposes should significant liquidity remain in the EFA product. Assessments for all delivery periods prior to October 2014 will continue to reflect the EFA calendar (see table). Platts has also launched assessments of the following EFA-Gregorian gap products, also effective November 1: -- Gap 1 September 29/30 2014, baseload and peakload (GBP/MWh: UKBGG01, UKPGG01; Eur/MWh: UKBGE01, UKPGE01) -- Gap 2 March 30/31 2015, baseload and peakload (GBP/MWh: UKBGG02, UKPGG02; Eur/MWh: UKBGE02, UKPGE02) For further information on Platts methodology and a list of UK power roll dates, please see the European Electricity Methodology and Specifications Guide at www.platts.com. Please send comments, questions and feedback to ukpowercalendar@platts.com, with copy to pricegroup@platts.com. UK power desk: Jillian Ambrose (jillian.ambrose@platts.com, +44 20 7176 6740, Yahoo: ukpower_platts), Francis Browne (francis.browne@platts.com, +44 20 7176 6239), Anna Crowley (anna.crowley@platts.com, +44 20 7176 6174).

UK power assessments, calendar basis from November 1 Day-ahead EFA Weekend EFA Week-Ahead EFA Week-Ahead+1 EFA December EFA January EFA February EFA Q1 14 EFA Q2 14 EFA Summer 14 EFA Sept 29/30 2014 EFA-Gregorian Gap 1 Winter 14/15 Gregorian March 30/31 2015 EFA-Gregorian Gap 2 Summer 15 Gregorian Winter 15/16 Gregorian Summer 16 Gregorian Apr 14 Annual EFA Summer 14/Gregorian Winter 14/15

All assessments are baseload and peakload except the weekend, which is baseload only. Assessments are published in GBP/MWh and converted into Eur/MWh.