NOTICE DATE:  August 7, 2018

NOTICE TYPE:  W-A072018-02 Settlements

SHORT DESCRIPTION:  ERCOT Board approval of price corrections for Real-Time Locational Marginal Prices (RTLMPs), Real-Time Settlement Point Prices (RTSPPs), EPS Meter Prices (RTRMPRs), and other prices for certain Settlement Intervals on Operating Day July 18, 2018.

INTENDED AUDIENCE:  QSE and CRRAH Settlement Personnel

DAY AFFECTED:  July 18, 2018

LONG DESCRIPTION:  On July 20, 2018, ERCOT posted Market Notice W-A072018-01 informing Market Participants that ERCOT would seek approval of the ERCOT Board of Directors (ERCOT Board) to correct prices in the Real-Time Market (RTM) for certain Security-Constrained Economic Dispatch (SCED) intervals and Settlement Intervals (i.e., intervals ending 16:30 – 18:30) on Operating Day July 18, 2018.

On August 7, 2018, ERCOT staff recommended that the ERCOT Board make a determination that prices for Settlement Intervals ending 16:30 – 18:30 on July 18, 2018 were significantly affected by a Data Input error, and authorize ERCOT to correct all impacted prices, including:

• Real-Time Locational Marginal Prices (RTLMP);
• Real-Time Settlement Point Prices (RTSPP);
• Real-Time Settlement Point Price Energy-Weighted (RTSPPEW);

·         Real-Time Price for Energy Metered for Resource (RTRMPR);

• Real-Time Price for Energy Metered as Wholesale Storage Load (RTRMPRWSL);
• Real-Time On-Line Reserve Price Adder (RTORPA);
• Real-Time Off-Line Reserve Price Adder (RTOFFPA);
• Real-Time Reserve Price for On-Line Reserves (RTRSVPOR); and
• Real-Time Reserve Price for Off-Line Reserves (RTRSVPOFF).

The ERCOT Board considered the recommendation at its August 7, 2018 meeting and approved the price correction.  All supporting documents are located at ERCOT - Board of Directors Meeting (August 7, 2018) under Agenda Item No.9.

ADDITIONAL INFORMATION:  The corrected Settlement Point Prices will be posted in both CSV and XML formats in the RTM Price Corrections folder located at http://www.ercot.com/mktinfo/prices/.

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 ClientServices@ercot.com.

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