Market Information System Grid and Market Conditions

Resource Adequacy 2017

Drought Risk

ERCOT developed a drought risk monitoring tool to screen for potential drought-related impacts to generation resources. The tool predicts whether water supplies used by generation resources in the ERCOT region are at risk of reaching levels requiring closer monitoring over the next 6 to 18 months, based on the most recent reservoir and lake levels from the Texas Water Development Board (TWDB) and historical trends in water usage. The documents available in this section include summaries of the results of this analysis, documentation of the tool methodology, and other related reports.

Drought Risk Analysis Reports
Related Documents

Generator Interconnection Status Report

View the latest public interconnection information on generation resources in the ERCOT region.

  • GIS REPORT December 2017
    Generator interconnection activity for December
    (Jan 02, 2018 – xlsx – 1.4 MB)
  • GIS REPORT November 2017
    Generator interconnection activity for November
    (Dec 04, 2017 – xlsx – 1.4 MB)
  • GIS REPORT October 2017
    Generator interconnection activity for October
    (Nov 03, 2017 – xlsx – 1.4 MB)
  • GIS REPORT September 2017
    Generator interconnection activity for September
    (Oct 19, 2017 – xlsx – 1.4 MB)
  • GIS REPORT August 2017
    Generator interconnection activity for August. Revised to include missing Project Date column in Full Study Table and change IE Name for a resource in IA Table
    (Sep 13, 2017 – xlsx – 1.4 MB)
  • GIS REPORT July 2017
    Generator interconnection activity for July
    (Aug 02, 2017 – xlsx – 1.4 MB)
  • GIS REPORT June 2017
    Generator interconnection activity for June
    (Jul 03, 2017 – xlsx – 1.4 MB)
  • GIS REPORT May 2017
    Generator interconnection activity for May
    (Jun 01, 2017 – xlsx – 1.4 MB)
  • GIS REPORT April 2017
    Generator interconnection activity for April
    (May 01, 2017 – xlsx – 1.3 MB)
  • GIS REPORT March 2017 Revised
    Generation interconnection activity for March, revised to report the synchronization approval for the PHR Peaker project (INR 14INR0038)
    (Aug 09, 2018 – xlsx – 738.4 KB)
  • GIS REPORT March 2017
    Generator interconnection activity for March
    (Apr 04, 2017 – xlsx – 738.4 KB)
  • GIS REPORT February 2017
    Generator interconnection activity for February
    (Mar 02, 2017 – xlsx – 2.2 MB)
  • GIS REPORT January 2017
    Generator interconnection activity for January 2017
    (Feb 01, 2017 – xlsx – 1.3 MB)
  • GIS REPORT December 2016
    Generator interconnection activity for December 2016
    (Jan 04, 2017 – xlsx – 1.7 MB)

Resource Adequacy Assessments

Seasonal Assessment of Resource Adequacy

The SARA is based on criteria similar to CDR, however the seasonal outlook reflects near-term weather forecasts, generator outage trends, and updates to the generation fleet. 

Capacity, Demand and Reserves Report

This biannual report contains a 10-year forecast of electric use and expected generation resources.

Planning Reserve Margin Analysis

This section consists of documents and data files pertaining to the Economically Optimum Reserve Margin (EORM) reporting initiative, which was authorized by the Public Utility Commission of Texas as part of Project Number 42302, "Review of the Reliability Standard in the ERCOT Region." The current minimum target reserve margin established by the ERCOT Board of Directors is 13.75 percent of peak electricity demand to serve electric needs in the case of unexpectedly high demand or levels of generation plant outages.

Wind and Solar

Wind and solar profiles for use in ERCOT planning studies, as well as files showing the derivation of wind and solar peak average capacity percentages using approved CDR methodologies.