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NOTICE DATE:  May 17, 2019

NOTICE TYPE: W-A040319-02 NPRR

SHORT DESCRIPTION:  Implementation Details of NPRR916 (Phase 2)

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  May 31, 2019

LONG DESCRIPTION:  On May 31, 2019, Protocol language related to Nodal Protocol Revision Request (NPRR) 916, Mitigated Offer Floor Revisions, Phase 2, will be implemented.

NPRR916 revised ERCOT Protocol Section 4.4.9.4.2 to change the Mitigated Offer Floor for the Combined Cycle and Gas/Oil Steam and Combustion Turbines Resource categories from a Fuel Index Price (FIP)-based calculation to a constant value. The first phase of NPRR916 implementation made the constant value $0/MWh on April 10, 2019.  In this second phase, the constant value will be changed to -$20/MWh on May 31, 2019.

NPRR916 was approved by the ERCOT Board of Directors on April 9, 2019. The intent of this NPRR is to correct inconsistencies in pricing outcomes resulting from the interaction between a Resource’s energy offer and the Mitigated Offer Floor process in ERCOT systems.

ADDITIONAL INFORMATION:  Pursuant to Nodal Protocol Section 21.6, Nodal Protocol Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.   

NPRR916 and associated documents can be found on the ERCOT website.

Please review the ERCOT website for previous Market Notices related to this subject. 

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].

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