Summary of Protocol Revisions

Summary of May 1, 2011 Nodal Protocol Revisions

Section 2:

NPRR298 - New Definitions Related to Black Start and Clarification to the Hourly Standby Fee Payments for Black Start Resources (formerly “New Definitions Related to Black Start”)

This Nodal Protocol Revision Request (NPRR) adds new definitions to Section 2.1 and clarifies the use of Black Start terminology in other sections of the Nodal Protocols. This NPRR also identifies uses of the proposed terms(s) and makes language changes if applicable and aligns the terminology and acronym related to the Hourly Standby Fee Payment with Section 6.6.8.1, Black Start Capacity Payment.

Revised Subsection: 2.1

NPRR316 - Negative Self-Arranged Ancillary Services Quantity (formerly “Negative Self-Arranged Ancillary Services”)

This NPRR allows Qualified Scheduling Entities (QSEs) to enter a negative value for a Self-Arranged Ancillary Service Quantity.

Revised Subsection: 2.1 [grey-boxed effective upon system implementation]

NPRR320 - Minimum PTP Option Bid and Settlement (formerly “Minimum PTP Option Bids and CRR Auction Fees”)

This NPRR sets a minimum price on Point-to-Point (PTP) Option bids (Minimum PTP Option Bid Price) of $0.010 and places a fee on each PTP Option bid awarded where the clearing price for the PTP Option bid awarded is less than the Minimum PTP Option Bid Price.

NPRR343 - CRR Bid and PTP Obligation Bid Criteria Change

This NPRR removes the ability to bid for Congestion Revenue Rights (CRRs) in the CRR Auction or bid for PTP Obligations in the Day-Ahead Market (DAM) that exist entirely within a station.

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Section 3:

See Section 2 above.

Revised Subsection: 3.14.2

NPRR329 - Security Classification Changes for Extracts/Reports

This NPRR changes the security classification to “Public” for extracts/reports that are currently classified in the Nodal Protocols as ”Secure”; and suspends the posting of State Estimator Load Reports that reveal individual Load data.

Revised Subsections: 3.2.2, 3.2.3, 3.12 [grey-boxed effective upon system implementation]

NPRR335 - TSP Request for Interval Data

This NPRR aligns the Nodal Protocols with the zonal Protocols, providing Transmission Service Providers (TSPs) the ability to request and receive interval data from ERCOT.

Section 4:

NPRR290 - ERCOT Publication of DAM PSS/E Files

This NPRR enhances transparency of the transmission topology (including all scheduled Outages) used in the DAM by requiring ERCOT to publish certain data files (in Power System Simulator for Engineering (PSS/E) format for easy review by all Market Participants with standard power flow tools such as PTI PSS/E, Power World Simulator, etc.

Revised Subsections: 4.2.3 [grey-boxed effective upon system implementation]

NPRR301 - Correct Energy Trade Language for Adjustment Period

This NPRR revises language for entering Energy Trades in the Adjustment Period to match that of the latest Edison Electric Institute (EEI) Amendment.

Revised Subsections: 4.4.2

NPRR316 - Negative Self-Arranged Ancillary Services Quantity (formerly “Negative Self-Arranged Ancillary Services”)

Revised Subsection: 4.3, 4.4.7.1, 4.4.7.1.1 (new), 4.4.7.3, 4.4.7.4, 4.4.10, 4.5.1, 4.6.4.2.1, 4.6.4.2.2, 4.6.4.2.3, 4.6.4.2.4 [grey-boxed effective upon system implementation]

Revised Subsections: 4.2.2, 4.2.3, 4.2.3.1 [grey-boxed effective upon system implementation]

NPRR339 - Modifications to Heuristic Rules to Determine LMP at De-energized Electrical Bus and Treatment of CRR Offers at De-energized Settlement Points

This NPRR extends the heuristic rules to determine the Locational Marginal Price (LMP) at de-energized Electrical Buses; and changes the treatment of CRR Offers when either the source or sink Settlement Point is de-energized in the DAM.

Revised Subsections: 4.4.5, 4.5.1 [grey-boxed effective upon system implementation]

Revised Subsection: 4.2.3, 4.4.6.1, 4.4.6.2, 4.4.9.5.1, 4.4.9.5.2, 4.4.9.6.1, 4.4.9.6.2, 4.5.3 [partially grey-boxed effective upon system implementation]

Section 5:

Section 6:

Revised Subsection: 6.5.9.6

NPRR304 - Correct Energy Trade Language for Adjustment Period

This NPRR removes the requirement for ERCOT to develop a methodology, subject to Technical Advisory Committee (TAC) approval, to determine the optimal frequency bias for given system conditions.

Revised Subsection: 6.5.7.6.1

Revised Subsection: 6.3.2, 6.5.7.1.13, 6.5.9.2, 6.5.9.3.3 [grey-boxed effective upon system implementation]

NPRR339 - Modifications to Heuristic Rules to Determine LMP at De-energized Electrical Bus and Treatment of CRR Offers at De-energized Settlement Points

Revised Subsection: 6.6.1 [grey-boxed effective upon system implementation]

NPRR341- Correct Energy Trade Language for Adjustment Period

This NPRR modifies input data processing of Supplemental Ancillary Services Markets (SASMs) to remove offers that do not meet the lead time for each hour in the SASM study period.

Revised Subsection: 6.4.8.2.2 [grey-boxed effective upon system implementation]

Section 7:

Revised Subsection: 7.5.2, 7.5.2.3, 7.5.7, 7.6, 7.7, 7.7.1 (new), 7.7.2 (new), 7.9.3.4, 7.9.3.5 [partially grey-boxed effective upon system implementation]

Revised Subsections: 7.5.2.3, 7.5.3.2

Section 8:

Revised Subsection: 8.1.1.2.1.5

Section 9:

Revised Subsection: 9.17.1 [grey-boxed effective upon system implementation]

Section 10:

NPRR353 - Administrative Changes for the May 1, 2011 Protocols

This Administrative NPRR corrects a reference within the Protocols due to Competitive Metering Guide and Retail Market Guide changes associated with RMGRR094, Adding the Competitive Metering Guide to the Retail Market Guide.

Section 11:

NPRR335 - TSP Request for Interval Data

Section 15:

NPRR294 - Texas SET 4.0 Including: Acquisition and Transfer of Customers From One REP to Another; Meter Tampering Transactional Solution

This NPRR defines the process for Mass Transition of Electric Service Identifiers (ESI IDs) from one Competitive Retailer (CR) to another CR when transitioning due to an acquisition, the process for switch hold indicator addition and removal, and other various changes deemed to be implemented with Texas Standard Electronic Transaction (TX SET) version 4.0.

Revised Subsections: 15, 15.1.1, 15.1.1.2.2, 15.1.1.3, 15.1.1.4, 15.1.1.5, 15.1.1.6, 15.1.1.7, 15.1.1.8, 15.1.3, 15.1.3.1, 15.1.3.1 (new) 15.1.3.2 (new), 15.1.4.1, 15.1.4.2, 15.1.4.3, 15.1.4.4, 15.1.4.5, 15.1.4.5.1, 15.1.4.6, 15.1.4.6.1, 15.1.4.7, 15.1.4.7.1, 15.1.4.7.2, 15.1.4.8, 15.1.5.1, 15.1.5.2, 15.1.5.3, 15.1.5.4, 15.1.5.5, 15.1.5.6, 15.1.5.7, 15.1.6.2, 15.1.7, 15.1.8, 15.1.9.1, 15.1.9.2, 15.1.9.3, 15.1.9.4, 15.1.10, 15.1.10.1, 15.1.10.2, 15.1.10.3, 15.1.10.4, 15.2, 15.2.3, 15.3, 15.4.1, 15.4.1.4, 15.4.1.5 [grey-boxed effective upon system implementation]

Section 19:

Revised Subsections: 19, 19.3.1, 19.4.1 [grey-boxed effective upon system implementation]

Section 22:

Revised Attachment: D

Section 24:

Revised Subsections: 24.1, 24.1.1, 24.1.2.1, 24.1.2.2, 24.1.3 (new), 24.1.3.1 (new), 24.1.3.2 (new), 24.2, 24.3.1, 24.3.1.4, 24.4, 24.4.5, 24.5.1, 24.6.1 [grey-boxed effective upon system implementation]