Generation
This page provides current information on Generation Resources, including forecast and actual generation for Wind and PhotoVoltaic (Solar) Generation Resources; Resource Outages; Reliability Unit Commitment (RUC) constraints; Reliability Must Run (RMR) Resource deployments; Fuel Type; and aggregate High and Low Dispatch Limits (HDL, LDL) in the ERCOT region. The Key Documents section provides links to supporting documents related to resource asset registration, Outage scheduling, and monthly ERCOT Wind Integration Reports.
Aggregate High and Low Dispatch Limits (HDL, LDL)
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Summary Report of HDL and LDL
This report is posted after every SCED run and includes the sum of the HDL and the sum of the LDL for all Generation Resources On-Line and Dispatched by SCED.
Fuel Mix
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Fuel Mix Report: 2019
Reports actual generation by fuel type for each 15-minute settlement interval, as well as totals by month and year-to-date.
(Jul 08, 2019 – xlsx – 1.3 MB) -
Fuel Mix Report: 2007 - 2018
Reports actual generation by fuel type for each 15-minute settlement interval, as well as totals by month and year-to-date.
(May 15, 2019 – zip – 30.9 MB)
Intermittent Renewable Resources
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Solar Power Production - Actual 5-Minute Averaged Values
This report is posted every 5 minutes and includes System-wide actual 5-minute averaged solar power production for On-Line PVGRs for a rolling historical 60-minute period.
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Solar Power Production - Hourly Averaged Actual and Forecasted Values
This report is posted every hour and includes System-wide actual hourly averaged solar power production, STPPF, PVGRPP, and COP HSLs for On-Line PVGRs for a rolling historical 48-hour period as well as the System-wide STPPF, PVGRPP and COP HSLs for On-Line PVGRs for the rolling future 168-hour period.
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Aggregated Solar Resource Power Potential Forecast
This report is posted every hour and includes System-wide STPPF and PVGRPP for On-Line PVGRs for the rolling future 168-hour period.
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Wind Power Production - Actual 5-Minute Averaged Values
This report is posted every 5 minutes and includes System-wide and Regional actual 5-minute averaged wind power production for a rolling historical 60-minute period.
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Wind Power Production - Actual 5-Minute Averaged Values by Geographical Region
This report is posted every 5 minutes and includes System-wide and Geographic Regional actual 5-minute averaged wind power production for a rolling historical 60-minute period.
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Wind Power Production - Hourly Averaged Actual and Forecasted Values
This report is posted every hour and includes System-wide and Regional actual hourly averaged wind power production, STWPF, WGRPP and COP HSLs for On-Line WGRs for a rolling historical 48-hour period as well as the System-wide and Regional STWPF, WGRPP and COP HSLs for On-Line WGRs for the rolling future 168-hour period.
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Wind Power Production - Hourly Averaged Actual and Forecasted Values by Geographical Region
This report is posted every hour and includes System-wide and Geographic Regional actual hourly averaged wind power production, STWPF, WGRPP and COP HSLs for On-Line WGRs for a rolling historical 48-hour period as well as the System-wide and Regional STWPF, WGRPP and COP HSLs for On-Line WGRs for the rolling future 168-hour period.
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Hourly Aggregated Wind Output
These files display the hourly aggregated wind power output for ERCOT for the year.
Resource Outage Capacity
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Hourly Resource Outage Capacity
This report includes all approved and accepted Planned, Forced and Maintenance Resource outages. The report excludes Resource outages for retirement of old equipment, seasonal mothballed (during the outaged season) and mothballed.
Reliability Unit Commitment (RUC)
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Hourly RUC Active and Binding Transmission Constraints
View the list of all active and binding constraints observed in the Hourly Reliability Unit Commitment (RUC) process.
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Hourly RUC Online In SCED Offline In COP Report
An hourly Reliability Unit Commitment (RUC) report containing the sum of the HSLs of Generation Resources that are online in the most recent SCED execution and indicated as offline in its COP, for each hour of the RUC study period. Online SCED statuses are ONRUC, ONREG, ON, ONDSR, ONOS, ONOSREG, ONDSRREG, FRRSUP, ONTEST, ONEMR, ONRR, ONOPTOUT, STARTUP, and OFFQS. Offline COP statuses are OFF, OUT, and EMR.
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Daily RUC Active and Binding Transmission Constraints
View the list of all active and binding constraints observed in the Day-Ahead Reliability Unit Commitment (RUC) process.
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Weekly RUC Active and Binding Transmission Constraints
View the list of all active and binding constraints observed in the Weekly Reliability Unit Commitment (RUC) process.
Reliability Must Run (RMR) Service
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Hourly RMR Services Deployed
Reliability Must Run (RMR) Resources deployed for the prior hour, if any.
Key Documents
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Section 5: Generation Resource Interconnection or Change Request
See Section 5 of the Current Planning Guide
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Notification of Change of Generation Resource Designation
(Feb 06, 2017 – docx – 32.7 KB) -
Notification of Suspension of Operations
Must be completed prior to consideration of any Generation Resource for RMR status
(Feb 06, 2017 – docx – 41.3 KB) -
Resource Modification Forms
(Jan 16, 2014 – zip – 1.6 MB) -
Scheduled Zonal Generation - Historical
(Apr 23, 2007 – zip – 3.8 MB)