1. Lead from the front Texas Nodal http://nodal.ercot.com 1 Texas Nodal Registration meeting- RARF Question &Answer Matt Mereness August 9 th, 2007

2. Lead from the front Texas Nodal http://nodal.ercot.com 2 RARF Q&A Agenda: Anti-Trust Admonition Resource Asset Registration Form (RARF) Questions and Answers

3. Lead from the front Texas Nodal http://nodal.ercot.com 3 Outlook for timing of Registration Activities: Feb 08 Mar 08 Dec 07Nov 07Jan 08 Oct 07 Aug 07Sep 07 Jul 07 Standard Form Agreements A/S Attestation RARF PCRR Paperwork RARF- 9/1/07 SFA- due early Oct 07 Attestation- due 9/1/07 RARF #2 ? PCRR docs due- 12/1/07 Registration Activities NOIE Load Zone Declaration NOIE declaration due- 12/1/07 Registration Applications Applications available CRR Registration by 1/15/08 for Phase1 participation Any new QSEs to register for DAM participation Dynamic Scheduling Confirm EPS Metering Verifiable Costs Metering- tentative

4. Lead from the front Texas Nodal http://nodal.ercot.com 4 Resource Asset Registration Form Resource Asset Registration Form (RARF) update: –Last week Resource Entities with Generation Resources were emailed the: Zonal GARF Pre-populated RARF –Purpose of the RARF First RARF data set released to support EDS3 activities Resource Entities to provide limited set of Resource asset data No signature required Can be submitted via TML Service Request (directions in form) –Return to ERCOT by 9/4/2007 –Load Resources not needed for this round of RARF Will be part of next iteration later in year (estimate late-October) to support Network Modeling and forthcoming EDS4

5. Lead from the front Texas Nodal http://nodal.ercot.com 5 Resource Asset Registration Form (continued) –Common questions on RARF High/Low Reasonability Limits –What are these? »Nodal field per protocol 3.7.1- An "Out-of-Bounds" value chosen by RE and used by ERCOT to alarm/reject data exceeding the value. »This value validate data submitted to ERCOT »Examples- alarms ICCP, rejects COP, etc. For private network, what are the High/Low Reasonability Limits –Limit would simply be the Highest and Lowest amount of power that could be injected into ERCOT from that unit (depends on unit capabilities and swing of the industrial load behind the fence).

6. Lead from the front Texas Nodal http://nodal.ercot.com 6 Resource Asset Registration Form (continued) –Common questions on RARF (continued) Combined Cycle registration details (will review example) –Number of configurations allowed? »Equal or less than number of physical units –Joint Ownership allowed for Combine Cycle? »CC will be administered by one entity –How to fill out the form

7. Lead from the front Texas Nodal http://nodal.ercot.com 7 Resource Asset Registration Form (continued) GT1GT3 GT2 ST1 Train1GenSite Combined Cycle Configuration Naming: GenSite = 8 char Train id = 4 char Configuration id = 2 char GENSITE_CC1_1

8. Lead from the front Texas Nodal http://nodal.ercot.com 8 Resource Asset Registration Form 1-1 Config (can interchange units) 2-1 Config (can interchange units)

9. Lead from the front Texas Nodal http://nodal.ercot.com 9 Resource Asset Registration Form 3-1 Config (can interchange units) Additional 3-1 to include duct burner or other variables

10. Lead from the front Texas Nodal http://nodal.ercot.com 10 Questions/Answers See attached Sample RARF XLS File with Combined Cycle data Questions/Comments Contact info: Nodal Transition Readiness Center; NodalMarketTransition@ercot.com / 512 248-3900 NodalMarketTransition@ercot.com