Title Market Monitor Terminology Change
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Status Approved on 01/15/2008
Effective Dates

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (02/01/08 Nodal Protocols Library)

Voting Record

Date Gov Body Motion Result
01/15/2008 BOARD T approve NPRR087 as recommended by TAC. Passed
01/03/2008 TAC Recommended for approval as submitted. Passed
12/13/2007 PRS To forward the Recommendation Report and IA to TAC for approval. Passed
11/15/2007 PRS To recommend approval of NPRR087 as submitted Passed


Status: Approved
Date Posted: Oct 30, 2007
Sponsor: ERCOT Staff
Urgent: No
Sections: 1.1, Summary of the ERCOT Protocols Document; 1.3, Confidentiality ;1.3.1, Restrictions on Protected Information; 1.3.6, Exceptions; 2, Definitions and Acronyms; 3.7, Resource Parameters; 3.10.4, ERCOT Responsibilities;, Telemetry Criteria; 3.10.8, Dynamic Ratings; 3.11.4, Transmission Planning Responsibilities; 3.19, Constraint Competitiveness Tests;, Security Constrained Economic Dispatch; 8.2, ERCOT Performance Monitoring and Compliance; 17.1, Overview; 17.2, Objectives and Scope of Market Monitoring and Data Collection; 17.3, Market Data Collection and Use; 17.3.1, Information System Data Collection and Retention; 17.3.3, Accuracy of Data Collection; 17.3.4, PUCT Staff and WEMM Review of Data Collection; 17.5, Reports to PUCT Staff, WEMM, and the FERC; and 17.6, Changes to Facilitate Market Operation
Description: This Nodal Protocol Revision Request (NPRR) replaces the term Wholesale Electric Market Monitor (WEMM) with the term Independent Market Monitor (IMM).
Reason: Public Utility Regulatory Act (PURA) § 39.1515 (Wholesale Electric Market Monitor) directs the Public Utility Commission (Commission or PUCT) to develop rules governing the operations, standards, funding, and conduct of a wholesale electric market monitor. In compliance with this provision, the Commission adopted PUC Subst. R. 25.365, relating to the Independent Market Monitor. According to PUC Subst. R. 25.365, the entity that has taken on the role of wholesale electric market monitor is referred to as the Independent Market Monitor (IMM). In order to ensure consistency in terminology between the Commission Substantive Rules and the ERCOT Protocols and avoid confusion, the term Wholesale Electric Market Monitor (WEMM) as used in the Nodal Protocols should, therefore, be replaced with the term Independent Market Monitor (IMM).

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