Title: Modification of Voltage Support Requirements to Address Existing Non-Exempt WGRs
Next Group:
Next Step:
Status: Approved on 10/18/2011
Effective Dates:


Date Gov Body Action Taken Next Steps
10/18/2011 BOARD Approved
09/01/2011 TAC Recommended for Approval ERCOT Board consideration of NPRR389
08/18/2011 PRS Recommended for Approval TAC consideration of NPRR389
07/21/2011 PRS Recommended for Approval PRS langauge consideration

Voting Record

Date Gov Body Motion Result
10/18/2011 BOARD To approve NPRR389 as recommended by TAC in the 9/1/11 TAC Report. Passed
09/01/2011 TAC To recommend approval of NPRR389 as amended by the 8/26/11 E.ON comments and as revised by TAC. Passed
08/18/2011 PRS To endorse and forward the 7/21/11 PRS Report and Impact Analysis for NPRR389 to TAC. Passed
07/21/2011 PRS To recommend approval of NPRR389 as submitted. 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: Jul 6, 2011
Sponsor: ERCOT
Urgent: No
Sections: 2.1, 3.15
Description: This Nodal Protocol Revision Request (NPRR) clearly defines the Reactive Power capability requirements for Wind-powered Generation Resources (WGRs) that commenced operation on or after February 17, 2004, and have a signed Standard Generation Interconnection Agreement (SGIA) on or before December 1, 2009 (Existing Non-Exempt WGRs). These Existing Non-Exempt WGRs will fall into two categories: (1) Those whose current design allows them to meet the Reactive Power capability requirement described in paragraph (3) of Section 3.15. In these cases, the Reactive Power profile is depicted graphically as a rectangle. (2) Those whose current design does not allow them to meet the Reactive Power capability requirement described in paragraph (3) of Section 3.15. These WGRs must conduct engineering studies using the Summer/Fall 2010 Voltage Profiles to determine their actual Reactive Power capability and must, at a minimum, provide Reactive Power proportional to the real power output (a Reactive Power profile depicted graphically as a triangle). This NPRR further requires that all new Generation Resources shall have an engineering study, or demonstrate through performance testing, to show compliance with the Reactive Power capability requirements of paragraph (3) of Section 3.15 before beginning commercial operations. This NPRR also modifies the definition of "Automatic Voltage Regulator (AVR)" to better address the practical differences in Resource technology in providing this capability.
Reason: This NPRR addresses the central issue (a Reactive Power profile as either a rectangle or triangle) in PUC Docket No. 37817, Appeal and Complaint By Iberdrola Renewables, Inc. et al of ERCOT Decision to Approve PRR 830, and PUC Docket No. 38981, Joint Appellants’ Appeal and Complaint Concerning the ERCOT Board’s Adoption of NPRR 269 and Request for Related Relief. Order No. 22 (PUC Docket No. 37817) and Order No. 7 (PUC Docket No. 38981) consolidated PUC Docket No. 38981 into PUC Docket No. 37817. ERCOT and Joint Appellants have been working for some time to resolve the central issue involved in this PUC Docket. This NPRR is the work product of those efforts. All parties in PUC Docket No. 37817 have reviewed this NPRR.

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