1. Protocol Revision Subcommittee
Presentation to the
ERCOT Technical Advisory Committee
February 5, 2009

2. PRS Summary
8 PRRs for Approval
5 Urgent Status
2 NPRRs for Approval

3. Revision Requests Unanimously Recommended for Approval with No Impacts

4. PRR 785 – Timing for Required Black Start Unit Load Carrying Test
Purpose
(ERCOT)
Changes the required Black Start unit load carrying test from once every 6 years to once every 5 years.
Benefit
Reduces NERC compliance violation risk.
Market Impact
More frequent load carrying tests.
System Change No
N/A
Assumptions
PRS Vote
PRS unanimously recommended approval; all Market Segments were present
Effective Date
April 1, 2009

5. PRR 785 – Timing for Required Black Start Unit Load Carrying TestNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

6. PRR 793 – WGR QSE Scheduling Metric -- URGENT
Purpose
(CPS Energy, Muni on behalf of QMWG)
Provides details for WGR-only QSEs such that the scheduling metric will apply to more operating hours
Benefit
Conforms the WGR QSE scheduling practices to ERCOT control process.
Market Impact
Improves operational efficiency.
System Change No
N/A
Assumptions
PRS Vote
PRS unanimously recommended approval as amended by Reliant Energy comments; all Market Segments were present
Effective Date
March 1, 2009

7. PRR 793 – WGR QSE Scheduling Metric -- URGENTNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

8. PRR 795 – 90-Day Transmission Outage Scheduling Timeline -- URGENT
Purpose
(ERCOT)
Requires ERCOT to coordinate outages submitted with more than 90 days notice at least 75 days prior to the outage; clarifies 3 to 8 day timeline to eliminate overlap in requirements.
Benefit
Increase accuracy of TCR model; reduce timeline confusion.
Market Impact
Enhance TCR holder’s ability to mitigation congestion risk by providing more detailed TCR cases..
System Change No
N/A
Assumptions
PRS Vote
PRS unanimously recommended approval; all Market Segments were present
Effective Date
March 1, 2009

9. PRR 795 – 90-Day Transmission Outage Scheduling Timeline -- URGENT
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

10. PRR 799 – ERCOT CEO Approval of NPRRs and SCRs Prior to Posting on MIS -- URGENT
Purpose
(ERCOT)
Mandates ERCOT CEO approval before NPRRs may be posted to the MIS; mandates ERCOT CEO approval of SCRs that impact functionality of nodal market; provides appeal mechanism.
Benefit
N/A
Market Impact
System Change No
Assumptions
PRS Vote
PRS unanimously recommended approval; all Market Segments were present
Effective Date
Upon ERCOT Board Approval

11. PRR 799 – ERCOT CEO Approval of NPRRs and SCRs Prior to Posting on MIS -- URGENTNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

12. NPRR 135– Deletion of UFE Analysis Zone Language
Purpose
(ERCOT)
Deletes outdate section pertaining to UFE analysis.
Benefit
Clarifies Protocols.
Market Impact
N/A
System Change No
Assumptions
PRS Vote
PRS unanimously recommended approval; all Market Segments were present except the IGEN segment
Effective Date
Posting approved by ERCOT CEO – Effective upon Texas Nodal implementation; no incremental impact to nodal budget or schedule; requires “essentiality designation” by TPTF.

13. NPRR 135– Deletion of UFE Analysis Zone Language
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

14. NPRR 161 – Clarification of Establishing Decision-making Authority of Managed Capacity
Purpose
(ERCOT)
Clarifies the obligation to provide ERCOT designated decision-making authority over Resources when considering pricing safeguards and testing competitiveness in resolving system constraints.
Benefit
Clarifies Protocols.
Market Impact
Resource entities submit designation of decision-making authority directly to ERCOT (not through QSE).
System Change No
N/A
Assumptions
PRS Vote
PRS unanimously recommended approval as amended by ERCOT comments; all Market Segments were present
Effective Date
Posting approved by ERCOT CEO – Effective upon Texas Nodal implementation; no incremental impact to nodal budget or schedule; requires “essentiality designation” by TPTF.

15. NPRR 161 – Clarification of Establishing Decision-making Authority of Managed Capacity
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

16. Revision Requests With Comments to TAC or Non-Unanimously Recommended for Approval with/without Impacts

17. PRR 784 – Delete Use of Boundary Generation Resources to Resolve CRE Congestion
Purpose
(J Aron, IPM)
Removes language regarding resolution of congestion on a CRE by Boundary Generation Resources (Sec )
Benefit
Clarifies current protocols to match ERCOT operations.
Market Impact
N/A
System Change No
Assumptions
PRS Vote
PRS recommended approval with 4 abstentions; all Market Segments were present
Effective Date
April 1, 2009

18. PRR 784 – Delete Use of Boundary Generation Resources to Resolve CRE CongestionNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

19. PRR 786 – Modifications to EILS Settlement
Purpose
(Luminant, IOU on behalf of SDAWG)
Clarifies that 1st settlement uses QSE LRS; introduces a resettlement based on True-Up LRS; removes conflicting dispute language; clarifies dispute submission deadlines; and moves language on settlement timing to Section
Benefit
Eliminates confusion and allows more accurate uplift of EILS Cost to each QSE representing load.
Market Impact
Improved process and data information for the market.
System Change No
N/A
Assumptions
PRS Vote
PRS recommended approval as amended by COPS comments and as revised by PRS with 1 abstention; all Market Segments were present
Effective Date
March 1, 2009

20. PRR 786 – Modifications to EILS SettlementNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

21. PRR 794– Meteorological Data Required from QSEs Representing WGRs -- URGENT
Purpose
(CPS Energy, Muni on behalf of QMWG)
Requires WGR to provide real-time meteorological data to ERCOT through its selected QSE; requires ERCOT to establish procedures specifying the data’s accuracy requirements
Benefit
Allows for improved wind power potential forecasting by ERCOT.
Market Impact
Improves capacity planning by ERCOT.
System Change No
N/A
Assumptions
PRS Vote
PRS recommended approval as amended by Wind Coalition and as revised by PRS with 2 abstentions; all Market Segments were present
Effective Date
March 1, 2009

22. PRR 794– Meteorological Data Required from QSEs Representing WGRs -- URGENTNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

23. PRR 798– Update Trading Hub Conversion -- URGENT
Purpose
(ERCOT)
Synchronizes Hub calculations with 2009 CSC designation.
Benefit
Improves accuracy of the Protocols.
Market Impact
Increased clarity and accuracy of the Protocols.
System Change No
N/A
Assumptions
PRS Vote
PRS unanimously recommended approval with 1 abstention; all Market Segments were present
Effective Date
March 1, 2009

24. PRR 798– Update Trading Hub Conversion -- URGENTNo
Impact
Impact
Description
Item Reviewed
Budget
Staffing
Computer Systems
Business Functions
Grid Operations
Credit Monitoring/
Liability

25. PRR/NPRR Summary
Revision Requests Unanimously Recommended for Approval with No Impact
PRR 785 – Timing for Required Black Start Unit Load Carrying Test
PRR 793 – WGR QSE Scheduling Metric -- URGENT
PRR 795 – 90-Day Transmission Outage Scheduling Timeline -- URGENT
PRR 799 – ERCOT CEO Approval of NPRRs and SCRS Prior to Posting on MIS – URGENT
NPRR 135 – Deletion of UFE Analysis Zone Language
NPRR 161 – Clarification of Establishing Decision-Making Authority of Managed Capacity
Revision Requests with Comments to TAC or Non-Unanimously Recommended for Approval with/without Impact
PRR 784 – Delete Use of Boundary Generation Resources to Resolve CRE Congestion
PRR 786 – Modifications to EILS Settlement
PRR 794 – Meteorological Data Required from QSEs Representing Wind-powered Generation Resources – URGENT
PRR 798 – Update Trading Hub Conversion – URGENT