Title: Modeling of Generic Transmission Constraints
Next Group:
Next Step:
Status: Approved on 07/17/2007
Effective Dates:

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (08/01/07 Nodal Protocols Library)


Date Gov Body Action Taken Next Steps
07/17/2007 BOARD Approved
06/28/2007 TAC Recommended for Approval Board consideration of this NPRR and its IA
06/21/2007 PRS Recommended for Approval TAC consideration of this NPRR and its Impact Analysis

Voting Record

Date Gov Body Motion Result
07/17/2007 BOARD To approve this NPRR as recommended by TAC. Passed
06/28/2007 TAC To recommend approval of this NPRR and its IA as recommended by PRS. Passed
06/21/2007 PRS To recommend approval of NPRR064 as amended by PRS, endorse the IA and forward documents to TAC Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.


Status: Approved
Date Posted: May 29, 2007
Sponsor: Trip Doggett on behalf of TPTF
Urgent: No
Sections: 2.1, 2.2, 3.10,
Description: This Nodal Protocol Revision Request (NPRR) provides for the definition of and posting of Generic Transmission Limits (GTLs) in Network Operations Modeling requirements.
Reason: Although the Nodal Protocol descriptions of Network Security Analysis and Congestion Revenue Rights (CRR) Auctions reference the use of "generic" transmission constraints, Section 3.10, Network Operations Modeling and Telemetry does not provide for their definition and for limits on their use. Generic constraints are typically more limiting than a Transmission Element’s thermal limit and can have significant impact on Locational Marginal Prices (LMPs) when they constrain a solution. This NPRR provides for the modeling of these constraints and provides notice to the Market Participants through postings to the MIS.

Key Documents

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