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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.

Advanced Action Notice Planning Assessment Input Details

Advanced Action Notice Planning Assessment Input Details
This report provides the Load and Resource inputs used by ERCOT to determine the need to issue an Advanced Action Notice (AAN) or Outage Schedule Adjustment.

Aggregate High and Low Dispatch Limits (HDL, LDL)

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

Reports actual generation by fuel type for each 15-minute settlement interval, as well as totals by month and year-to-date.

Dec 7, 2022 - xlsx - 2.6 MB
Mar 7, 2022 - xlsx - 3.3 MB
Mar 10, 2021 - zip - 36.8 MB

Intermittent Renewable Resources

Hourly Aggregated Wind and Solar Output
Hourly aggregated wind and solar power output for ERCOT for the year,
Hourly System-Wide and Regional Solar Forecasts by Model
This report is posted every hour and includes system-wide and regional STPPF and PVGRPP values produced by each forecast model for On-Line PVGRs for the rolling future 168-hour period and also indicates which forecast model is used for each region to populate COPs.
Hourly System-wide and Regional STWPF and WGRPP by Forecast Model
This report is posted every hour and includes system-wide and regional STWPF and WGRPP values produced by each forecast model for On-Line WGRs for the rolling future 168-hour period and also indicates which forecast model is used for each region to populate COPs.
Intra-Hour Solar Power Forecast by Geographical Region
This report is posted every 5 minutes and includes system-wide and solar region aggregations of the Intra-Hour Photovoltaic Power Forecast (IHPPF) for the next two hours, with five minute resolution.
Intra-Hour Wind Power Forecast By Geographical Region
Intra-Hour Wind Power Forecast (IHWPF) by wind region that provides a rolling two hour, five minute forecast of ERCOT-wide wind production potential.
Solar Power Production - Actual 5-Minute Averaged Values by Geographical Region
This report is posted every 5 minutes and includes system-wide and geographic regional 5-minute averaged solar power production for a rolling historical 60-minute period.
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. Our forecasts attempt to predict HSL,
Solar Power Production - Hourly Averaged Actual and Forecasted Values by Geographical Region
This report is posted every hour and includes System-wide and geographic regional hourly averaged solar power production, STPPF, PVGRPP, and COP HSL for On-Line PVGRs for a rolling historical 48-hour period as well as the system-wide and regional STPPF, PVGRPP, and COP HSL for On-Line PVGRs for the rolling future 168-hour period. System-wide and regional generation, are included in this report under column labels with "GEN_" prefixes. ERCOT's forecasts attempt to predict HSL, which is uncurtailed power generation potential. Since generation is impacted by curtailments, the data in this report should not be used to evaluate forecast performance. Steps will be taken to include HSL in this report in the future.
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. Our forecasts attempt to predict HSL, which is uncurtailed power generation potential. Actual system-wide generation, which is included in this report as “ACTUAL_SYSTEM_WIDE” or “SYSTEM_WIDE” is impacted by curtailments. Because of this, the data in this report should not be used to evaluate forecast performance. Steps will be taken to include Actual System-wide HSL in this report in the future.
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.
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.
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. Our forecasts attempt to predict HSL, which is uncurtailed power generation potential. Actual system-wide generation, which is included in this report as “ACTUAL_SYSTEM_WIDE” or “SYSTEM_WIDE” is impacted by curtailments. Because of this, the data in this report should not be used to evaluate forecast performance. Steps will be taken to include Actual System-wide HSL in this report in the future.
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. Our forecasts attempt to predict HSL, which is uncurtailed power generation potential. Actual system-wide generation, which is included in this report as “ACTUAL_SYSTEM_WIDE” or “SYSTEM_WIDE” is impacted by curtailments. Because of this, the data in this report should not be used to evaluate forecast performance. Steps will be taken to include Actual System-wide HSL in this report in the future.

Resource Outage Capacity

Available Resource Planned Outage Capacity Margin 7 Day
Hourly Maximum Resource Capacity Available for Planned Outages within 7 days of the Operating Day
Available Resource Planned Outage Capacity Margin 7 Day Plus
Daily Maximum Resource Capacity Available for Planned Outages for 7 days to 60 months of the Operating Day
DC Tie Outage Report
One Business Day following the approval or cancellation of a Transmission Facility’s Outage or Resource Outage which requires a DC Tie Outage or DC Tie derate, ERCOT shall post the following information on the MIS Public Area
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.
Methodology for Calculating Maximum Daily Resource Planned Outage Capacity
Methodology for Calculating Maximum Daily Resource Planned Outage Capacity
Unplanned Resource Outages Report
This report contains a snapshot of all unplanned resource outages that were active in the Outage Scheduler, including both forced and maintenance outages, which had started more than 3 Operating Days prior to the run of this report and have an end greater than 30 days prior to the report run date. The data for these outages is submitted by operators of generation assets and is used by ERCOT staff in the operation of the Texas power grid.
Unplanned Resource Outages Report - Interim
This interim report with an initial reporting period of Jun 1, 2021 00:00:00 to Sept 30, 2021 23:59:59 will be extended until implementation of NPRR1097. This report contains a snapshot of all unplanned resource outages, including both forced and maintenance outages, which were active in the ERCOT Outage Scheduler which had started 3 or more business days prior to the run date of this report. The data for these outages is submitted by operators of generation assets and is used by ERCOT staff in the operation of the Texas power grid. This report does not contain resource outages for generators that are no longer operational on the Texas power grid or have not begun operating on the Texas power grid. The report may not include outages of less than 2 hours duration, since unplanned resource outages of this duration are not required to be reported to ERCOT. This report contains all resources that are required to enter outages in the ERCOT Outage Scheduler including Private Use Networks, Energy Storage Resources and Settlement-Only Generators.

Reliability Unit Commitment (RUC)

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.
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.
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.
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

Hourly RMR Services Deployed
Reliability Must Run (RMR) Resources deployed for the prior hour, if any.

Key Documents

Notification of Suspension of Operations
Must be completed prior to consideration of any Generation Resource for RMR status
Feb 6, 2017 - docx - 41.3 KB
Jan 16, 2014 - zip - 1.6 MB
Apr 23, 2007 - zip - 3.8 MB
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