March 4, 2008

TPTF

CRR EDS (Release 7) Update

2TPTFMarch 4, 2008 2

Release 7.1 - CRR

EDS 3 Release 7.1 Exit Criteria % Complete Comments

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 13th 2008:40 active participants11 participants did not participate8 participants joined late/deferred

Since official conclusion of R7.1 – more participants are still completing R7.1 activity.As of Mar 3rd 2008: 54 participants completed R7.1

Jan 08 Feb 08 Mar 08 Apr 08 May 08Dec 07

CRR – R7.0 CRR – R7.1 CRR – R7.2 CRR – R7.3 CRR – R7.4 CRR – R7.5 (TBD)

Jan 08 Feb 08 Mar 08 Apr 08 May 08Dec 07 Jan 08 Feb 08 Mar 08 Apr 08 May 08Dec 07

CRR – R7.0 CRR – R7.1 CRR – R7.2 CRR – R7.3 CRR – R7.4 CRR – R7.5 (TBD)

R7.1 (UI Connectivity) started on schedule on Feb 4th

Strong progress enabled early completion of R7.1 on Feb 13th

Kicked-off R7.2 (fully structured monthly allocation/auction) on schedule on Feb 18th

Nominations and bids submitted

Auction run and bilateral trade activity this week

3TPTFMarch 4, 2008 3

R7.2 Schedule and test scripts

Monday Tuesday Wednesday Thursday Friday Sat/Sun18-Feb 19 20 21 22 23/24

Monday Conf Call - Overview of weeks activities

7.1 review (if necessary)

Workshop: Submit nominations

[ERCOT] Allocation Run

Workshop: Download/discuss allocation results (PCRR/MCFRI)

Friday Conf Call - Review of weeks activities

N/A

25 26 27 28 29 Mar 1/2Monday Conf Call - Overview of weeks activities

Workshop: Download/discuss pre-auction information

Workshop: Submit bid/offers

Workshop: Submit bid/offers

Friday Conf Call - Review of weeks activities[ERCOT] Auction Run

[ERCOT] Auction Run

3 4 5 6 7 8/9Monday Conf Call - Overview of weeks activities

Workshop: Download/discuss auction results

Workshop: Download/discuss auction results & auction invoice?

Workshop: Initiate/accept bilateral trades

Friday Conf Call - Review of weeks activities

N/A

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 28th 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

4TPTFMarch 4, 2008 4

Status of R7.2 activity – week 2 (CRR auctions)

50 participants successfully submitted bids (91% participation)

Accent Energy Texas LPAEP Energy Partners, Inc.American Electric Power Service CorporationANP Funding I LLCBPBrazos Electric Power Co Op Inc.CALPINE ENERGY SERVICES LPCirro EnergyCitiCity of Austin dba Austin EnergyCity of Garland Coral Power (Shell)CPS EnergyDB Energy Trading LLCDirect Energy, LPDTE Energy TradingEagle Energy Partners I LPEdison Mission Marketing & Trading Inc.EnergyCo Marketing & Trading LLCEPIC Merchant Energy TX LLCExelonFirst Choice Power LPFPL Energy Power Marketing, Inc.FPL Energy Pecos Wind I, LPFPL Energy Pecos Wind II, LPFPL 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

5TPTFMarch 4, 2008 5

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