Planning

This page provides current information on long-term planning in the ERCOT region.

Generation Resources Unavailable in Planning Studies Prior to NSO
A list of Generation Resources that will be set out of service in Regional Transmission Plan (RTP) and Geomagnetic Disturbance (GMD) Vulnerability Assessments prior to filing a Notification of Suspension of Operations (NSO).
ERCOT System Operating Limit (SOL) Methodology
This document identifies the methodology for determining System Operating Limits (SOLs) and Interconnection Reliability Operating Limits (IROLs), in the planning and operations time horizons, as required by NERC FAC-010 and FAC-011 to be used by the ERCOT Planning Authority/Reliability Coordinator as well as all applicable NERC Registered Transmission Operators and Transmission Planners in the ERCOT Region.
Planning Horizon Transmission Capability Methodology
This document identifies the planning processes and procedures for calculating Transmission Capacities to satisfy NERC FAC-012 and FAC-013.

Archived Operations and System Planning reports are available under the "View Other Years" selection feature on the Helpful Resources page.

2020 Long-Term System Assessment for the ERCOT Region
(Dec 23, 2020 – zip – 6 MB)
2020 Regional Transmission Plan
(Jun 29, 2021 – zip – 3.2 MB)
2020 Report on Existing and Potential Electric System Constraints and Needs
(Dec 23, 2020 – pdf – 2.9 MB)
ERCOT Appropriate Economic Planning Measure posted
(Feb 12, 2021 – pdf – 70 KB)
Whitepaper Economic Planning
(May 11, 2021 – pdf – 587.7 KB)
2020 Panhandle Regional Stability Study
(Nov 27, 2020 – pdf – 1 MB)
The Use of GTCs in ERCOT July 2020
(Nov 27, 2020 – pdf – 630.4 KB)
West Texas Export Stability Assessment
(Nov 27, 2020 – pdf – 606 KB)
Status Update on Permian Basin Improvement Ideas for the Transmission Planning Process
(Nov 27, 2020 – pdf – 13 MB)
Permian Basin Improvement Ideas for the Transmission Planning Process
(Nov 27, 2020 – pdf – 428.4 KB)
2019 Panhandle Regional Stability Study
(Nov 27, 2020 – pdf – 227.3 KB)
ERCOT Delaware Basin Load Integration Study Report
(Dec 23, 2019 – zip – 5.7 MB)
2019 Regional Transmission Plan
(Dec 23, 2019 – zip – 1.4 MB)
2019 ERCOT Report on Existing and Potential Electric System Constraints and Needs
(Dec 23, 2019 – pdf – 2.3 MB)
Transmission Project and Information Tracking
(Jul 01, 2021 – xlsx – 315 KB)
Archived Transmission Project and Information Tracking
(Jul 01, 2021 – zip – 12.7 MB)