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NOTICE DATE:  May 26, 2017

NOTICE TYPE:  M-D052617-01 Release - Wholesale

SHORT DESCRIPTION:  Implementation Details for NPRR573


DAYS AFFECTED:  June 27 - 29, 2017

LONG DESCRIPTION:  ERCOT will be implementing Energy Management System (EMS) and Market Management changes for Nodal Protocol Revision Request (NPRR) 573, Alignment of PRC Calculation, between June 27 and 29, 2017.

NPRR573 aligns the Protocol language with the current Physical Responsive Capability (PRC) calculation in the EMS, and modifies the PRC calculation to represent appropriate frequency-responsive Wind-powered Generation Resources (WGRs). Upon implementation, the PRC calculation will include any available headroom (curtailed capacity) from Primary Frequency Response-capable WGRs.

ADDITIONAL INFORMATION:  NPRR573<http://www.ercot.com/mktrules/issues/NPRR573> and associated documents can be found on the ERCOT website.

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>.

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