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RTWG Report to TAC

June 4, 2009June 4, 2009

Henry DurrwachterHenry Durrwachter

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Activities to Date• Met monthly in April and May• Completed first draft of the Texas Renewables

Integration Plan (TRIP)• Completed draft of 2nd Quarterly Report• Heard presentations from industry leaders in the

areas of:– Vehicle to Grid (V2G) storage technology– Battery storage technologies

• Set tentative date for Wind Workshop III (June 18, 2009)

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Texas Renewables Integration Plan (TRIP)

The TRIP is detailed look at many of the policies, issues and strategies impacting the development and integration of renewable resources in the competitive electricity market in ERCOT. It is a living document that will be updated annually (typically in February each year).

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TRIP Table of ContentsI. Texas Renewables Integration Plan Overview

A. TRIP Purpose and ProcedureB. TRIP Input ProcessC. TRIP Change Control ProcessD. TRIP Structure

II. Public Policy ConsiderationsA. Federal Policy ConsiderationsB. State Policy ConsiderationsC. Related ERCOT Policy Implementation Activities

III. Technical ConsiderationsA. Approach to Emerging TechnologiesB. Maintaining and Institutionalizing Technical KnowledgeC. Incorporating Technical Knowledge into ERCOT FunctionsD. ERCOT and Stakeholder Resource Requirements

IV. Market Design ConsiderationsA. Approach to Emerging TechnologiesB. Approach to Variable Generation TechnologiesC. Texas Nodal Market TransitionD. Ancillary ServicesE. Performance Metrics

V. Key Issues and Strategies for ResolutionA. Texas Nodal Market Transition IssuesB. Application of ERCOT and Stakeholder Resources to TRIP ActivitiesC. System Planning IssuesD. System Operations IssuesE. Market Design IssuesF. Workshops and Training

VI. Appendices

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The TRIP Quarterly Report

A separate document, the TRIP Quarterly Update, will be provided after the end of every calendar quarter (i.e., March, June, September and December) to the ERCOT Board and the PUCT to inform those bodies of status of renewable resources installed in ERCOT and the disposition of various issues identified by the RTWG and assigned to ERCOT subcommittees, task forces and working groups to resolve.

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TRIP Quarterly Update (Draft)• Total wind generating capacity = 8,135 MW (through May,

2009)• New wind generation added in since February, 2009:

– Goat Wind (Phase 2) 70 MW (Sterling County)• New Renewable Resources with Signed Interconnect

Agreements (1,100 MW) since February, 2009:– Senate Wind (150 MW)(Jack County)– Lenorah Wind (200 MW)(Frio County)– Sterling Energy Center (300 MW)(Sterling County)– Langford Wind Power (150 MW)(Tom Green County)– Panther Creek 3 Wind (200 MW)(Concho County)– Nacogoches Biomass (100 MW) (Nacogdoches County)

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ERCOT Wind Generating Capacity

116 116816 977 1,173 1,385

1,854

2,875

4,785

8,005 8,135 8,135 8,135 8,135

- -

- --

-

-

-

-

-

7811,171

2,1871,636

-

2,000

4,000

6,000

8,000

10,000

12,000

1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

MW

ActualNew

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Questions for TAC

• Does the TRIP document capture all the necessary information for the Board and PUCT?

• Does the TRIP quarterly update provide adequate information?

• Does the quarterly update need to coincide with calendar quarters (i.e., March/June/Sept/Dec)?

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Next Steps

• Finalize TRIP based on feedback from TAC, ERCOT Board, and PUCT (July).

• Work with ERCOT Operations to finalize schedule and speakers for Wind Workshop III.

• Establish timelines for each identified issue.• Develop and begin review of whitepapers for

issues in the Undetermined category.• Assign new issues identified to the appropriate

ERCOT subcommittee.

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Questions?