NOTICE DATE: June 30, 2025
NOTICE TYPE: W-B063025-01 Operations
SHORT DESCRIPTION: Request for known outages to address NERC Reliability Standard TPL-001
INTENDED AUDIENCE: NERC-registered Generator Owners (GOs) and Generator Operators (GOPs) in the ERCOT Region and ERCOT-registered Resource Entities (REs)
DAYS AFFECTED: July 14, 2025
LONG DESCRIPTION: NERC Reliability Standard TPL-001 requires Planning Assessment studies to include "known outage(s) of generation or Transmission Facility(ies)."
To address this requirement, ERCOT requests that each NERC-registered GO and GOP in the ERCOT Region and each ERCOT-registered RE identify known outages of equipment (including, but not limited to, generators, transmission lines, transformers, and series or shunt devices) for study years 2027 through 2031 and provide this information to ERCOT. For each outage, each entity should include the projected start and stop dates and times of the outage, and the reason for the outage.
ERCOT uses this information in the creation of study models for its Planning Assessment. Please note that Parts 2.1.4 and 2.4.4 of Requirement R2 of TPL-001-5.1 state, "Known outage(s) shall not be excluded solely based upon outage duration."
ACTION REQUIRED: By July 14, 2025, each NERC-registered GO and GOP in the ERCOT Region and each ERCOT-registered RE shall provide a written response to this request identifying known outages of generation Facilities for study years 2027 through 2031. Please email responses to RTP@ercot.com and include "[Known Outages - Generation]" in the subject line.
Any entity from which no response is received by July 14, 2025, will be presumed to have no known outages of generation Facilities for study years 2027 through 2031.
ADDITIONAL INFORMATION: Please provide the information requested in the 2025RTP_GenKnownOutageTemplate attachment.
CONTACT: If you have any questions, please contact RTP@ercot.com.
If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.
dg