System Ancillary Service Capacity Monitor

This table displays real-time total system amounts of: 

Responsive Reserve Capability, including: 

• Generation Resources and Energy Storage Resources (ESRs) in the form of Primary Frequency Response (PFR) – The sum of Responsive Reserve (RRS) capacity from individual Generation Resources and ESRs. RRS capacity of each Generation Resource is calculated as the lower of RRS Award, remaining up capability, telemetered PFR Capability, and PFR qualification. 

• Load Resources excluding Controllable Load Resources (CLRs) – The sum of RRS capacity from Load Resources excluding CLRs. The RRS Capacity is calculated as lower of RRS Award, current power consumption minus Low Power Consumption, telemetered UFR capability, and UFR qualification.     

• Controllable Load Resources in the form of PFR – The sum of all RRS capacity from CLRs. The RRS Capacity is calculated as lower of RRS Award, current power consumption minus Low Power Consumption, telemetered PFR capability, and PFR qualification.     

• Resources, other than ESRs, capable of Fast Frequency Response (FFR) – The sum of all FFR capacity from resources that are not ESRs. 

• Energy Storage Resources in the form of FFR – The sum of all RRS capacity in the form of FFR that can be sustained for the SCED duration requirements of FFR from ESRs. FFR capacity is calculated as the lower of FFR Award, remaining up capability, telemetered FFR Capability, and FFR qualification, that can be sustained for the SCED duration requirements of FFR from ESRs. 

Responsive Reserve Awards, including: 

• Generation Resources and ESRs in the form of PFR – The sum of all PFR Awards from Generation Resources and ESRs. 

• Load Resources excluding Controllable Load Resources in the form of UFR – The sum of all UFR Awards from Load Resources excluding CLRs.                     

• Resources capable of Fast Frequency Response – The sum of all FFR Awards from FFR-qualified Resources. 

• Controllable Load Resources in the form of PFR – The sum of all PFR Awards from CLRs. 

ERCOT Contingency Reserve Capability, including: 

• Generation Resources – The sum of ERCOT Contingency Reserve Service (ECRS) capacity of individual Generation Resources, excluding Generation Resources telemetering OFFLINE – Quick Start Generation Resource Available for SCED Deployment (OFFQS) Resource status. ECRS capacity of each Generation Resource is calculated as lower of ECRS Award, remaining up capability, 10 times ECRS Ramp Rate, and ECRS qualification. 

• Load Resources excluding Controllable Load Resources – The sum of ECRS capacity of individual Load Resources excluding CLRs. ECRS capacity of each Load Resource excluding CLR is calculated as lower of ECRS Award, remaining capability for ECRS, and ECRS qualification. 

• Controllable Load Resources – The sum of ECRS capacity of individual CLRs. ECRS capacity of each CLR is calculated as lower of ECRS Award, remaining capability for ECRS, 10 times ECRS Ramp Rate, and ECRS qualification. 

• Quick Start Generation Resources (QSGRs) – The sum of ECRS capacity of individual QSGRs in OFFQS Resource status. ECRS capacity of each QSGR is calculated as lower of ECRS Award, remaining up capability,10 times ECRS Ramp Rate, and ECRS qualification. 

• Energy Storage Resources – The sum ECRS capacity of individuals ESRs. ECRS capacity of each ESR is calculated as lower of ECRS Award, remaining up capability, 10 times ECRS Ramp Rate, and ECRS qualification, that can be sustained for the SCED duration requirements of ECRS from ESRs. 

• ECRS Manually deployed by Resources with a Resources Status of ONSC – The sum of ECRS Awards at the time ECRS from Resources telemetering the ONLINE – Synchronous Condenser (ONSC) Resource status that have been manually deployed by ERCOT operators.  

ERCOT Contingency Reserve Awards, including: 

• Generation Resources – The sum of all ECRS Awards from Generation Resources excluding Generation Resources telemetering OFFQS Resource status. 

• Load Resources excluding Controllable Load Resources – The sum of all ECRS Awards from Load Resources excluding CLRs. 

• Controllable Load Resources – The sum of all ECRS Awards from CLRs. 

• Quick Start Generation Resources (QSGRs) – The sum of all ECRS Awards from QSGRs telemetering OFFQS Resource status. 

• Energy Storage Resources – The sum of all ECRS Awards of individual ESRs.  

Non-Spin Reserve Capability, including: 

• On-Line Generation Resources with Energy Offer Curves – The sum of all Non-Spin capacity from online Generation Resources with energy offer curves including Non-Spin capacity from QSGRs. Non-Spin capacity of each Generation Resource is calculated as lower of Non-Spin Award, remaining up capability, 30 times Non-Spin Ramp Rate, and Non-Spin qualification. 

• Resources with Output Schedules – The sum of all Non-Spin capacity from online Generation Resources with output schedules. Non-Spin capacity of each Generation Resource is calculated as lower of Non-Spin Award, remaining up capability, 30 times Non-Spin Ramp Rate, and Non-Spin qualification. 

• Undeployed Load Resources – The sum of all Non-Spin capacity from Load Resources. Non-Spin capacity of each Load Resource is calculated as lower of Non-Spin Award, remaining capability for Non-Spin, and Non-Spin qualification. 

• Off-Line Generation Resources excluding Quick Start Generation Resources, and On-Line Generation Resources with power augmentation capacity – The sum of Non-Spin capacity from offline Generation Resources and the sum of Non-Spin Awards coming from power augmentation capacity of online Generation Resources with power augmentation. 

• Energy Storage Resources – The sum of Non-Spin capacity of individual ESRs. Non-Spin capacity of each ESR is calculated as lower of Non-Spin Award, remaining up capability, 30 times Non-Spin Ramp Rate, and Non-Spin qualification, that can be sustained for the SCED duration requirements of Non-Spin from ESRs. 

Non-Spin Reserve Awards, including: 

• On-Line Generation Resources with Energy Offer Curves – The sum of all Non-Spin Awards from online Generation Resources including Non-Spin awards for QSGRs. 

• On-Line Generation Resources with Output Schedules – The sum of all Non-Spin Awards from online Generation Resources with output schedules. 

• Load Resources – The sum of all Non-Spin Awards from Load Resources. 

• Off-Line Generation Resources excluding QSGRs, including Non-Spin awards on power augmentation capacity – The sum of Non-Spin Awards from Generation Resources that are offline and the sum of Non-Spin Awards from power augmentation. 

• Quick Start Generation Resources – The sum of all Non-Spin Awards from Generation Resources with telemetered status OFFQS. 

• Energy Storage Resources – The sum of Non-Spin Awards of individual ESRs that can be sustained for the SCED duration requirements of Non-Spin. 

Regulation Capacity, including: 

• Reg-Up Capability – The sum of individual Resources’ Regulation-Up Capability as determined by their current output, Reg-Up Ramp Rate, and Reg-Up qualification. For ESRs, the duration requirements of Reg-Up are considered. 

• Reg-Down Capability – The sum of individual Resources’ Regulation-Down Capability as determined by their current output, Reg-Down Ramp Rate, and Reg-Down qualification. For ESRs, the duration requirements of Reg-Down are considered. 

• Undeployed Reg-Up – The sum of all remaining Reg-Up capacity calculated as the sum of each Resource’s Reg-Up Awards minus its Reg-Up deployed. 

• Undeployed Reg-Down – The sum of all remaining Reg-Down capacity calculated as the sum of each Resource’s Reg-Down Awards minus its Reg-Down deployed. 

• Deployed Reg-Up – The sum of all Resource’s Reg-Up deployed value. 

• Deployed Reg-Down – The sum of all each Resource’s Reg-Down deployed value. 

Regulation Awards, including: 

• Reg-Up – The sum of all Reg-Up Awards. 

• Reg-Down – The sum of all Reg-Down Awards.  

System Available Capacity, including: 

• Capacity from Controllable Load Resources available to decrease Base Points (energy consumption) in SCED – The sum of High Dispatch Limit minus current power consumption of CLRs.  

• Capacity from Controllable Load Resources available to increase Base Points (energy consumption) in SCED – The sum of current power consumption minus Low Dispatch Limit (LDL) of CLRs. 

• Capacity with Energy Offer Curves available to increase Generation Resource Base Points in SCED – The sum of High Sustained Limit (HSL) minus telemetered generation of Generation Resources with telemetered status of ON, ONEMR, ONOPTOUT, ONOS, ONRUC, or OFFQS and with an energy offer curve. 

• Capacity with Energy Offer Curves available to decrease Generation Resource Base Points in SCED – The sum of telemetered generation minus LSL of Generation Resources with telemetered status of ON, ONEMR, ONOPTOUT, ONOS, ONRUC, or OFFQS and with an energy offer curve. 

• Capacity without Energy Offer Curves available to increase Generation Resource Base points in SCED – The sum of HSL minus telemetered generation of Generation Resources with telemetered status of ON, ONEMR, ONOPTOUT, ONOS, ONRUC, or OFFQS and without an energy offer curve. 

• Capacity without Energy Offer Curves available to decrease Generation Resource Base Points in SCED – The sum of telemetered generation minus LSL of Generation Resources with telemetered status of ON, ONEMR, ONOPTOUT, ONOS, ONRUC, or OFFQS and without an energy offer curve. 

• Capacity with Energy Bid/Offer Curves available to increase ESR Base Points in SCED – The sum of HSL minus telemetered net output of ESRs that can be sustained for SCED duration requirements with telemetered status of ON and with an energy offer curve.  

• Capacity with Energy Bid/Offer Curves available to decrease ESR Base Points in SCED – The sum of telemetered net output minus Low Sustained Limit (LSL) of ESRs that can be sustained for SCED duration requirements with telemetered status of ON and with an energy offer curve. 

• Capacity without Energy Bid/Offer Curves available to increase ESR Base Points in SCED – The sum of HSL minus telemetered net output of ESRs that can be sustained for SCED duration requirements with telemetered status of ON and without an energy offer curve.  

• Capacity without Energy Bid/Offer Curves available to decrease ESR Base Points in SCED – The sum of telemetered net output minus LSL of ESRs that can be sustained for SCED duration requirements with telemetered status of ON and without an energy offer curve.
  

• Capacity available to increase Generation Resource Base Points in the next 5 minutes in SCED (HDL) – The sum of High Dispatch Limit (HDL) minus telemetered generation of Generation Resources with telemetered status of Online – With Energy Offer Curve (ON), Online – EMR (ONEMR), Online – Hour is a RUC Buy-Back Hour (ONOPTOUT), Online – With Output Schedule (ONOS), Online – Hour is RUC-Committed Interval (ONRUC), or Quick Start Generation Resource Available for SCED Deployment (OFFQS). 

• Capacity available to decrease Generation Resource Base Points in the next 5 minutes in SCED (LDL) – The sum of telemetered generation minus the LDL of Generation Resources with telemetered status of ON, ONEMR, ONOPTOUT, ONOS, ONRUC, or OFFQS. 

• Capacity to provide Reg-Up, RRS, or both, irrespective of whether it is capable of providing ECRS or Non-Spin – The sum of Generation Resources (including ESRs) and Load Resources telemetering non-zero Reg-Up Ramp Rates, or non-zero RRS capabilities considering current output level and High Sustainable Limit (HSL)/Low Sustainable Limit (LSL). 

• Capacity to provide Reg-Up, RRS, ECRS, or any combination irrespective of whether it is capable of providing Non-Spin – The sum of Generation Resources (including ESRs) and Load Resources telemetering non-zero Reg-Up Ramp Rates, non-zero ECRS Ramp Rates, or non-zero RRS capabilities, considering current output level and HSL/LSL. 

• Capacity to provide Reg-Up, RRS, ECRS, or Non-Spin, in any combination – The sum of Generation Resources (including ESRs) and Load Resources telemetering non-zero Reg-Up Ramp Rates, non-zero ECRS Ramp Rates, non-zero Non-Spin Ramp Rates, or non-zero RRS capabilities, considering current output level and HSL/LSL. 

ERCOT-wide Physical Responsive Capability (PRC), including: 

• ERCOT-wide Physical Responsive Capability (PRC) – The sum of PRC as defined in Protocol Section 6, Adjustment Period and Real-Time Operations. 

Real-Time Operating Reserve Demand Curve Capacity, including: 

• Real-Time On-Line reserve capacity – The Real-Time On-Line Reserve Capacity (RTOLCAP) as described in the Other Binding Document Methodology for Implementing Operating Reserve Demand Curve (ORDC) to Calculate Real-Time Reserve Price Adder. 

• Real-Time On-Line and Off-Line reserve capacity – The sum of the Real-Time On-Line Reserve Capacity (RTOLCAP) and the Real-Time Off-Line Reserve Capacity (RTOFFCAP) as described in the Other Binding Document Methodology for Implementing Operating Reserve Demand Curve (ORDC) to Calculate Real-Time Reserve Price Adder. 

EMR Out and Out-L Capacity, including: 

• Aggregate telemetered HSL capacity for Resources with a telemetered Resource Status of EMR – The sum of all telemetered HSL capacity for Resources with a telemetered Resource status of EMR. 

• Aggregate telemetered HSL capacity for Resources with a telemetered Resources Status of OUT – The sum of all telemetered HSL capacity for Resources with a telemetered Resource Status of Offline – Unavailable (OUT) or Offline – Available Only for Emergency Condition (EMRSWGR). 

• Aggregate net telemetered consumption for Resources with a telemetered Resource Status of OUTL – The sum of all telemetered consumption for Resources with a telemetered Resource status of Offline – Unavailable (OUTL). 

These values are all provided in megawatts (MW). Data is based on Real-Time telemetry.