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NOTICE DATE:  April 3, 2019

NOTICE TYPE:  Operations

SHORT DESCRIPTION:  NPRR916 Comments and WebEx meeting

INTENDED AUDIENCE:  ERCOT Market Participants and TAC

DAY AFFECTED:  April 4, 2019

LONG DESCRIPTION:  On December 27, 2018, ERCOT filed Nodal Protocol Revision Request (NPRR) 916, Mitigated Offer Floor Revisions, to revise ERCOT Protocol Section 4.4.9.4.2, Mitigated Offer Floor, to set the Mitigated Offer Floor for Combined Cycle Resources and Gas/Oil Steam and Combustion Turbines to $0/MWh. The intent of NPRR916 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. NPRR916 is scheduled to be considered by the ERCOT Board of Directors (Board) on Tuesday, April 9, 2019. NPRR916 currently contains a proposed effective date of May 1, 2019.

Prior to the upcoming Board meeting, ERCOT will be filing comments to request that the May 1, 2019 effective date be accelerated to April 10, 2019, as the current pricing of fuel in West Texas supports the need to make this system adjustment as soon as practicable. In its comments, ERCOT will also request that the Board approve a second phase of revisions to Protocol Section 4.4.9.4.2 to change the Mitigated Offer Floor for Combined Cycle Resources and Gas/Oil Steam and Combustion Turbines to -$20/MWh to further reduce the possibility of the Mitigated Offer Floor values improperly interfering with competitive offers. While the change to $0/MWh can become effective on April 10, 2019, ERCOT's proposed change to -$20/MWh requires changes to ERCOT systems that would become effective upon system implementation.

ERCOT will be hosting a WebEx presentation to discuss its proposed modifications to NPRR916 with stakeholders on Thursday, April 4, 2019 at 4:00 PM. Details of the WebEx meeting are shown below.

ADDITIONAL INFORMATION:  Please visit the meeting calendar<http://www.ercot.com/calendar/2019/4/4/179485-TAC> on ERCOT.com for information on this meeting.

The meeting details<http://www.ercot.com/calendar/2019/4/4/179485-TAC> are as follows:

Topic:           TAC WebEx re NPRR916

Date:             April 4, 2019

Time:            4:00 p.m.



WebEx Conference<https://urldefense.proofpoint.com/v2/url?u=https-3A__ercot.webex.com_ercot&d=DwIFAg&c=trp9rTvIdyEWh1VWB5x8_2JiPaB5oGZOtWPDws2_VoY&r=oHd46Wz8LigrpHwi5AJCCXH7a9wndoeaNfDwmksuzDk&m=iH97li3xUBLb3k9qcicB_OlQck7OQdLlzCdK_1J8NSU&s=cAugg9Yb927KTjyz2MIIIsClcq-9Ua_9Eic9eyL1sYU&e=>

Teleconference: 877-668-4493

Meeting number: 623 780 374

Meeting password: NPRR916



NPRR916<http://www.ercot.com/mktrules/issues/NPRR916> 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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