Title: Seasonal Generation Resource
Next Group:
Next Step:
Status: Approved on 05/14/2013
Effective Dates:

All sections except for Sections and


Sections and


Date Gov Body Action Taken Next Steps
05/14/2013 BOARD Approved
05/02/2013 TAC Recommended for Approval ERCOT Board for consideration.
04/18/2013 PRS Recommended for Approval TAC for consideration.
03/21/2013 PRS Deferred/Tabled PRS for consideration.
02/21/2013 PRS Deferred/Tabled PRS for consideration.

Voting Record

Date Gov Body Motion Result
05/14/2013 BOARD To approve NPRR514 as recommended by TAC in the 5/2/13 TAC Report. Passed
05/02/2013 TAC To recommend approval of NPRR514 as recommended by PRS in the 4/18/13 PRS Report as amended by the 4/30/13 Luminant comments and as revised by TAC with a recommended priority of 2013 and rank of 395; and requested the ERCOT Board remand NPRR514 to TAC if the Impact Analysis is greater than $100k. Passed
04/18/2013 PRS To grant Urgent status to NPRR514, to recommend approval of NPRR514 as amended by the 4/15/13 WMS comments, and to forward NPRR514 to TAC. Passed
03/21/2013 PRS To table NPRR514 and refer the issue to WMS. Passed
02/21/2013 PRS To table NPRR514 for one month. 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: Feb 4, 2013
Sponsor: Luminant Energy Company LLC
Urgent: Yes
Sections: 2.1, 3.9.1,,, 22-E, 22-H
Description: This Nodal Protocol Revision Request (NPRR) creates a new variation of ERCOT’s existing mothball process to allow Resource Entities to operate their Facilities during summer peak Load periods without having to go through the existing mothballing process each year. This NPRR modifies the Protocols to allow a Resource Entity to designate that its Generation Resource will operate only on a seasonal basis (i.e., at least during the period June 1 to September 30). Additional language changes are provided to describe the process for ERCOT to review the request to operate seasonally and to allow ERCOT to request the Generation Resource to become available earlier than June 1 or remain available after September 30 if ERCOT determines that the Generation Resource is needed for reliability reasons.
Reason: The current ERCOT Protocols do not have a designation that accurately reflects the status of a unit that intends to operate every summer but not be available at other times of the year. Because such seasonal operation may mean that the Resource would not be in operation for more than 180 days, the existing ERCOT process to "mothball" a Generation Resource comes into effect. That process requires substantial efforts on the part of both ERCOT and the Resource Entity to "mothball" then "un-mothball" the Resource when it returns to service. This NPRR creates a more efficient process by allowing the Generation Resource to remain modeled in the ERCOT systems while it is not available for operation and allows the Generation Resource to be shown as on Planned Outage in the Outage Scheduler during the period that it is not available for operation. To facilitate these changes, this NPRR adds a new checkbox on the Notification of Suspension of Operations form notifying ERCOT (and through the existing posting process, ERCOT Market Participants as well) that a Generation Resource owner plans to seasonally operate the Resource for a specific period of time. It also creates a new checkbox on the Notification of Change of Generation Resource Designation form to allow a Generation Resource to change from seasonal operation back to year-round operation if desired. This form is also revised to provide a Market Notice if the Generation Resource needs to modify its summer Operating Period (i.e., to start earlier than June 1 or to end later than September 30). The changes described in this NPRR will provide transparency to the market and simplify the process to allow Generation Resources to operate seasonally without all the complications of the existing mothball process.

Key Documents

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