Title: Wind-powered Generation Resource (WGR) High Sustained Limit (HSL) Update Process
Next Group:
Next Step:
Status: Approved on 05/18/2010
Effective Dates:

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (06/01/10 Nodal Protocols Library)


Date Gov Body Action Taken Next Steps
04/22/2010 PRS Recommended for Approval TAC consideration of NPRR214
05/18/2010 BOARD Approved
05/06/2010 TAC Recommended for Approval ERCOT Board consideration of NPRR214
03/25/2010 PRS Recommended for Approval PRS Impact Analysis review

Voting Record

Date Gov Body Motion Result
04/22/2010 PRS To endorse and forward the 3/25/10 PRS Report and Impact Analysis for NPRR214 to TAC Passed
05/18/2010 BOARD To approve NPRR214 as recommended by TAC in the 5/6/10 TAC Report. Passed
05/06/2010 TAC To recommend approval of NPRR214 as recommended by PRS in the 4/22/10 PRS Report. Passed
03/25/2010 PRS To recommend approval of NPRR214 as amended by the 3/16/10 Luminant comments. 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: Mar 12, 2010
Sponsor: Wind Coalition
Urgent: No
Description: This Nodal Protocol Revision Request (NPRR) establishes the specific timing of the WGR’s HSL update to ERCOT and specifies that, when not curtailed, the WGR’s HSL should equal the WGR’s current meter reading.
Reason: This NPRR will provide a clear and consistent mechanism to signal the need for active action by WGRs to curtail their output when ERCOT is Dispatching them below their HSL. The current wording does not specify the timing of the HSL updates and continuous updates to ERCOT would be expected. If the updates change every cycle, then there is no way of knowing the HSL value that ERCOT is using in the Security-Constrained Economic Dispatch (SCED) calculation for Base Points. Thus the curtailment trigger of comparing the ordered Base Point to the HSL will not be consistently applied. This revision insures that the HSL used by SCED is known to the WGR.

Key Documents

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