March 4, 2008 TPTF CRR EDS (Release 7) Update

2 2 TPTFMarch 4, 2008 Release CRR EDS 3 Release 7.1 Exit Criteria% CompleteComments Active market participants successfully:  Logged-in and accessed the CRR application  Uploaded a bid/offer portfolio (XML/CSV)  Edited a bid/offer within a portfolio (confirms web browser supports java applets)  Downloaded auction market results  Created a sell/buy bilateral trade posting 98% (of active participants) As of Feb 13 th 2008: 40 active participants 11 participants did not participate 8 participants joined late/deferred Since official conclusion of R7.1 – more participants are still completing R7.1 activity. As of Mar 3 rd 2008: 54 participants completed R7.1 Jan 08Feb 08Mar 08Apr 08May 08Dec 07 CRR–R7.0CRR–R7.1CRR–R7.2CRR–R7.3CRR–R7.4CRR–R7.5 (TBD) Jan 08Feb 08Mar 08Apr 08May 08Dec 07Jan 08Feb 08Mar 08Apr 08May 08Dec 07 CRR–R7.0CRR–R7.1CRR–R7.2CRR–R7.3CRR–R7.4CRR–R7.5 (TBD) R7.1 (UI Connectivity) started on schedule on Feb 4 th Strong progress enabled early completion of R7.1 on Feb 13 th Kicked-off R7.2 (fully structured monthly allocation/auction) on schedule on Feb 18 th Nominations and bids submitted Auction run and bilateral trade activity this week

3 3 TPTFMarch 4, 2008 R7.2 Schedule and test scripts R7.2 overview & demo NOIEs: Submit PCRR nominations (Latecomers only) R7.1 catch-up Download PCRR & MCFRI allocations Overview of week activities & demo Overview of week activities & demo All: Submit bids **submission window ends Feb 28 th 11:59PM Discuss PCRR & MCFRI allocations All: Download pre-auction Information (OPTIONAL) Review activities and status All: Download auction results & invoice (?) All: Initiate and accept bilateral trades R7.2 Conclusion Test scripts for ALL R7 participants: 1. Download pre-auction information (OPTIONAL) 2. Submit bid portfolio 3. Download auction market results 4. Create a sell/buy bilateral trade posting 5. Accept a sell/buy bilateral trade posting Test scripts for eligible NOIEs only: a. Submit PCRR nominations b. Download PCRR allocation results Test script for McCamey WGRs only: c. Download MCFRI allocation results

4 4 TPTFMarch 4, 2008 Status of R7.2 activity – week 2 (CRR auctions)  50 participants successfully submitted bids (91% participation) Accent Energy Texas LP AEP Energy Partners, Inc. American Electric Power Service Corporation ANP Funding I LLC BP Brazos Electric Power Co Op Inc. CALPINE ENERGY SERVICES LP Cirro Energy Citi City of Austin dba Austin Energy City of Garland Coral Power (Shell) CPS Energy DB Energy Trading LLC Direct Energy, LP DTE Energy Trading Eagle Energy Partners I LP Edison Mission Marketing & Trading Inc. EnergyCo Marketing & Trading LLC EPIC Merchant Energy TX LLC Exelon First Choice Power LP FPL Energy Power Marketing, Inc. FPL Energy Pecos Wind I, LP FPL Energy Pecos Wind II, LP FPL Energy Upton Wind I, LP  1 new participant completed R7.1 catch-up activity BP  Total participants completed R7.1 = 54 FPL Energy Upton Wind II, LP FPL Energy Upton Wind III, LP FPL Energy Upton Wind IV, LP Goldman Sachs GREEN MOUNTAIN ENERGY COMPANY Indian Mesa Wind Farm, LP (LCRA) Indian Mesa Wind Farm, LP (TXU) Integrys Energy Services, Inc. IPA Marketing Inc. Just Energy Savings Corp. Keystone Energy Partners LP Lower Colorado River Authority Luminant Energy Company LLC NRG Texas Power LLC Occidental Power Services Inc. Rainbow Energy Marketing Corp. Reliant Energy Power Supply LLC Sempra Energy Trading, LLC South Texas Electric Cooperative, Inc. Star Electricity LLC dba StarTex Power Suez Energy Resources NA, Inc. Tenaska Power Service Co. Tex-La Electric Cooperative of Texas Inc West Texas Wind Energy Partners, LP

5 5 TPTFMarch 4, 2008 Good News / Bad News High level of active participation No new issues identified by participants Not getting expected results when executing the R7.2 auction with contingencies –Proceeding with bilateral trade activity this week –Won’t exit 7.2 until successful completion and posting of auction results –Effects on schedule of remaining EDS activities to be determined