1. February 16, 2011 Retail Market Subcommittee Performance Measures 4th Quarter 2010 Transaction Comparison

2. 2 February 16, 2011 Issue Reporting Issue –As part of the analysis process, the number of 814_06 Sent Pending transactions reported in October 2010 appears to be somewhat low. –After detailed analysis, an issue causing summarization to lag was addressed in an emergency fix that released into production on November 2, 2010. –This issue impacted Switch, Standard Move-In and Priority Move-In 814_06 (Scheduled Notifications) transactions. The percentages in protocol for the counts reported are verified correct. –There was no impact with the transactions being sent to the Market Participants.

3. 3 February 16, 2011 Switches Performance Measures 4th Quarter 2010 Transaction Comparison PUC #36141 Performance Measures Retail Market Subcommittee Q4 2010Q3 2010 Transaction Qty% % 814_01 223,540-243,995- 814_02 12,473100%18,050100% 814_03 197,965100%225,839100% 814_04 210,892100%226,398100% 814_05 205,068100%224,941100% 814_06 172,664100%126,63498% 814_07 175,423100%187,903100% 867_02 Received 208,958100%219,406100% 867_02 Sent 207,458100%219,405100% 867_04 Sent 197,731100%215,131100%

4. 4 February 16, 2011 Standard Move-in Performance Measures 4th Quarter 2010 Transaction Comparison PUC #36141 Performance Measures Retail Market Subcommittee Q4 2010Q3 2010 Transaction Qty% % 814_16 365,974- 458,642- 814_17 4,431100%8,289100% 814_03 351,832100%448,874100% 814_04 356,618100%446,379100% 814_05 355,134100%443,283100% 814_06 182,186100%185,447100% 814_07 190,266100%253,023100% 867_02 Received 307,097100%386,782100% 867_02 Sent 306,471100%386,760100% 867_04 Sent 335,851100%420,228100%

5. 5 February 16, 2011 Priority Move-in Performance Measures 4thQuarter 2010 Transaction Comparison PUC #36141 Performance Measures Retail Market Subcommittee Q4 2010Q3 2010 Transaction Qty% % 814_16 193,254-205,545- 814_17 3,891100%4,658100% 814_03 184,279100%200,786100% 814_04 187,439100%199,203100% 814_05 186,848100%198,292100% 814_06 102,562100%99,607100% 814_07 93,400100%99,82799% 867_02 Received 173,897100%182,643100% 867_02 Sent 173,453100%182,643100% 867_04 Sent 178,915100%187,616100%

6. 6 Performance Measures 4th Quarter 2010 Transaction Comparison February 16, 2011 Move-out PUC #36141 Performance Measures Retail Market Subcommittee Q4 2010Q3 2010 Transaction Qty% % 814_24 Received 325,861-393,228- 814_24 Sent 226,068100%263,826100% 814_25 Received 226,397100%266,088100% 814_25 Sent 322,262100%391,666100% 867_03 Received 295,890-341,224- 867_03 Sent 292,761100%341,195100%

7. 7 February 16, 2011 ESI ID Create/Maintain Performance Measures 4th Quarter 2010 Transaction Comparison PUC #36141 Performance Measures Retail Market Subcommittee Q4 2010Q3 2010 Transaction Qty% % 814_20 Create 31,657-32,109- 814_21 Create 30,956100%32,073100% 814_20 Maintain 2,325,583-1,877,682- 814_21 Maintain 2,293,907100%1,886,533100%

8. 8 February 16, 2011 Questions? Performance Measures 4thQuarter 2010 Transaction Comparison