Global Aggregation Mod 34.09 raised by ESB CS at Mods Meeting 24 (29.09.09) Mods Panel recommended setting up Working Group to explore further Working Group 1, held on 19th November 2009 SEMO & RA met December 1st to develop options paper Options impact assessed for Working Group 2, held on 23rd February 2010 2 © AIME, 2006 Confidential 2

Global Aggregation At Working Group 2, MRSO proposed option E Further assessments completed Working Group 3 held on 27th April 2010 Decision to consult on Options A+ and E Consultation Paper issued by SEMO for response by 19th July 2010 3 © AIME, 2006 Confidential 3

Global Aggregation Nine responses received to Consultation Five responses favour Option E Three responses favour Option A+ One response recommended either option 4 © AIME, 2006 Confidential 4

Global Aggregation Of Participants who responded - Two responses favour Option E Three responses favour Option A+ Remaining three responses supporting Option E from service providers 5 © AIME, 2006 Confidential 5

Global Aggregation Working Group 4 scheduled for August 2010 There is no clear consensus from the consultation responses SEMO proposes that two T&SC modifications be drafted One modification for each Option 6 © AIME, 2006 Confidential 6

Global Aggregation SEMO requests approval to seek fuller impact assessments Noting response from BGE, SEMO recommends Participants also impact assess system changes for both Options Working Group 4 can review and discuss both modifications and costs If no consensus can be reached, both modifications should be submitted to Modifications Committee in September with full Working Group report for final decision 7 © AIME, 2006 Confidential 7