NOTICE DATE: December 18, 2019

NOTICE TYPE: W-A121819-01 Operations

SHORT DESCRIPTION: Proposal to Add Rocksprings Remedial Action Scheme

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: Comments due January 10, 2020

LONG DESCRIPTION: ERCOT has received a proposal from Akuo Energy to add a Remedial Action Scheme (RAS) at Rocksprings (Fermi). The Rocksprings RAS will monitor the Maxwell to Hamilton Road 138 kV line and the Eagle Hydro Tap (Ganso) to Escondido 138 kV line for overload and upon the detection of any thermal overload immediately and automatically runback and/or trip sufficient generation at Rocksprings (Fermi) to resolve transmission line overloads.

The proposed Rocksprings RAS is being reviewed by ERCOT.

Comments on the proposal are due by January 10, 2020, and should be submitted to [log in to unmask] using the attached comment form.  Any questions or concerns submitted by this date will be addressed by ERCOT or Akuo Energy.

ACTION REQUIRED: Any comments to this proposal are due to ERCOT by January 10, 2020, using the attached form.

ADDITIONAL INFORMATION: Information regarding all RASs can be found in the “Remedial Action Schemes and Constraint Management Plans” portlet located on the Market Information System (MIS) Long-Term Planning page.

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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