System Parameters

System Parameters

This section describes the interface used to retrieve the most recent Energy management System (EMS) System Parameters. The result set will hold the near real time values available from EMS.

These Real-Time summaries are also available to ERCOT operators and all Market Participants using the MIS and ICCP, giving updates of calculations every ten seconds, which show the Real-Time total system amount of:

Current ImplementationRTC+B Implementation

• Responsive Reserve Capacity from Generation Resources

• Responsive Reserve Capacity from Load Resources excluding Controllable Load Resources

• Responsive Reserve Capacity from Controllable Load Resources

• Unprocured Additional Capacity from Load Resources excluding Controllable Load Resources

• Responsive Reserve Capacity from Deployed Generation Resource and Controllable Load Resources

• Responsive Reserve Responsibility from Generation Resource

• Responsive Reserve Responsibility from Load Resources excluding Controllable Load Resources

• Responsive Reserve Responsibility from Controllable Load Resources

• Non-Spinning Reserve Capacity available from On-Line Generation Resources with Energy Offer Curves

• Non-Spinning Reserve Capacity available from undeployed Load Resources

• Non-Spinning Reserve Capacity available from Off-Line Generation Resources

• Non-Spinning Reserve Capacity available from Resources with Output Schedules

• Non-Spinning Reserve Responsibility from On-Line Generation Resources with Energy Offer Curves

• Non-Spinning Reserve Responsibility from On-Line Generation Resources with Output Schedules

• Non-Spinning Reserve Responsibility from Load Resources

• Non-Spinning Reserve Responsibility from Off-Line Generation Resources excluding Quick Start Generation Resources

• Non-Spinning Reserve Responsibility from Quick Start Generation Resources

• Undeployed Reg-Up and undeployed Reg-Down

• Deployed Reg-Up and deployed Reg-Down

• Regulation Responsibility Reg-Up and Reg-Down

• Available capacity from Controllable Load Resources available to decrease Base Points (energy consumption) in SCED

• Available capacity from Controllable Load Resources available to increase Base Points (energy consumption) in SCED

• Available capacity with Energy Offer Curves in the ERCOT System that can be used to increase Base Points in SCED

• Available capacity with Energy Offer Curves in the ERCOT System that can be used to decrease Base Points in SCED

• Available capacity without Energy Offer Curves in the ERCOT System that can be used to increase Base Points in SCED

• Available capacity without Energy Offer Curves in the ERCOT System that can be used to decrease Base Points in SCED

• Available capacity to increase Generation Resource Base Points in the next 5 minutes in SCED (HDL)

• Available capacity to decrease Generation Resource Base Points in the next 5 minutes in SCED (LDL)

• The ERCOT-wide Physical Responsive Capability (PRC)

• Real-Time On-Line Reserve Capacity

• Real-Time On-Line and Off-Line Reserve Capacity

• Total FFR computed by summing FFR MW from ONFFRRRS resource

• Total FFR Capacity computed by taking resource limits into account

• Contingency Reserve Capacity from Generation Resources

• Contingency Reserve Capacity from Load Resources excluding Controllable Load Resources

• Contingency Reserve Capacity from Controllable Load Resources

• Contingency Reserve Capacity from Quick Start Generation Resources

• Contingent Reserve Responsibility from Generation Resources

• Contingent Reserve Responsibility from Load Resources excluding Controllable Load Resources

• Contingent Reserve Responsibility from Controllable Load Resources

• Contingent Reserve Responsibility from Quick Start Generation Resources

• Contingency Reserve Capacity from Deployed Generation Resources and Load Resources

• Responsive Reserve Capacity from Generation Resources
• Responsive Reserve Capacity from Load Resources excluding Controllable Load Resources
• Responsive Reserve Capacity from Controllable Load Resources
• Unprocured Additional Capacity from Load Resources excluding Controllable Load Resources
• Responsive Reserve Capacity from Deployed Generation Resource and Controllable Load Resources
• Non-Spinning Reserve Capacity available from On-Line Generation Resources with Energy Offer Curves
• Non-Spinning Reserve Capacity available from undeployed Load Resources
• Non-Spinning Reserve Capacity available from Off-Line Generation Resources
• Non-Spinning Reserve Capacity available from Resources with Output Schedules
• Undeployed Reg-Up and undeployed Reg-Down
• Deployed Reg-Up and deployed Reg-Down
• Available capacity from Controllable Load Resources available to decrease Base Points (energy consumption) in SCED
• Available capacity from Controllable Load Resources available to increase Base Points (energy consumption) in SCED
• Available capacity with Energy Offer Curves in the ERCOT System that can be used to increase Base Points in SCED
• Available capacity with Energy Offer Curves in the ERCOT System that can be used to decrease Base Points in SCED
• Available capacity without Energy Offer Curves in the ERCOT System that can be used to increase Base Points in SCED
• Available capacity without Energy Offer Curves in the ERCOT System that can be used to decrease Base Points in SCED
• Available capacity to increase Generation Resource Base Points in the next 5 minutes in SCED (HDL)
• Available capacity to decrease Generation Resource Base Points in the next 5 minutes in SCED (LDL)
• The ERCOT-wide Physical Responsive Capability (PRC)
• Real-Time On-Line Reserve Capacity
• Real-Time On-Line and Off-Line Reserve Capacity
• Total FFR computed by summing FFR MW from ONFFRRRS resource
• Total FFR Capacity computed by taking resource limits into account
• Contingency Reserve Capacity from Generation Resources
• Contingency Reserve Capacity from Load Resources excluding Controllable Load Resources
• Contingency Reserve Capacity from Controllable Load Resources
• Contingency Reserve Capacity from Quick Start Generation Resources
• Contingency Reserve Capacity from Deployed Generation Resources and Load Resources

The request message would use the following message fields:

Message Element	Value
Header/Verb	get
Header/Noun	SystemParameters
Header/Source	Market participant ID
Header/UserID	ID of user

The corresponding response messages would use the following message fields:

Message Element	Value
Header/Verb	reply
Header/Noun	SystemParameters
Header/Source	ERCOT
Reply/ReplyCode	Reply code, success=OK, error=ERROR or FATAL
Reply/Error	Error message, if error encountered
Payload	SystemParameters

The following is an XML example for System Parameters interface:

Current ImplementationRTC+B Implementation

<ns1:SystemParameters xmlns:ns0="http://www.ercot.com/schema/2007-05/nodal/eip/il"
    xmlns:ns1="http://www.ercot.com/schema/2007-06/nodal/ews">
    <ns1:time>2023-04-19T11:59:45-05:00</ns1:time>
    <ns1:rrcGenRes>1160.73681640625</ns1:rrcGenRes>
    <ns1:rrcLoadResWoClr>1462.20471191406</ns1:rrcLoadResWoClr>
    <ns1:rrcClr>76.4300003051758</ns1:rrcClr>
    <ns1:nsrOnlineGenResWoEo>196.0</ns1:nsrOnlineGenResWoEo>
    <ns1:nsrUndeployedLoadRes>54.6940040588379</ns1:nsrUndeployedLoadRes>
    <ns1:nsrOfflineGenRes>3197.169921875</ns1:nsrOfflineGenRes>
    <ns1:nsrOfflineResWOS>559.830078125</ns1:nsrOfflineResWOS>
    <ns1:undeployedRegUp>150.734359741211</ns1:undeployedRegUp>
    <ns1:undeployedRegDown>389.0</ns1:undeployedRegDown>
    <ns1:capWEOIncreaseBP>2569.84887695313</ns1:capWEOIncreaseBP>
    <ns1:capWEODecreaseBP>3765.91967773438</ns1:capWEODecreaseBP>
    <ns1:capWOEOIncreaseBP>5760.798828125</ns1:capWOEOIncreaseBP>
    <ns1:capWOEODecreaseBP>26643.263671875</ns1:capWOEODecreaseBP>
    <ns1:prc>5997.5986328125</ns1:prc>
    <ns1:capCLRIncreaseBP>0.0</ns1:capCLRIncreaseBP>
    <ns1:capCLRDecreaseBP>3.76999664306641</ns1:capCLRDecreaseBP>
    <ns1:rrcUnprocuredL>308.591522216797</ns1:rrcUnprocuredL>
    <ns1:rrcDeployedGnCl>0.0</ns1:rrcDeployedGnCl>
    <ns1:rrRespGn>1160.90014648438</ns1:rrRespGn>
    <ns1:rrRespNcl>1478.5205078125</ns1:rrRespNcl>
    <ns1:rrRespCl>80.0</ns1:rrRespCl>
    <ns1:nsRespGnWEo>551.400024414063</ns1:nsRespGnWEo>
    <ns1:nsRespGnWOS>800.030029296875</ns1:nsRespGnWOS>
    <ns1:nsRespLd>98.0</ns1:nsRespLd>
    <ns1:nsRespGnOff>3197.17016601562</ns1:nsRespGnOff>
    <ns1:nsRespQsgr>515.830078125</ns1:nsRespQsgr>
    <ns1:deployedRegUp>206.765655517578</ns1:deployedRegUp>
    <ns1:deployedRegDown>0.0</ns1:deployedRegDown>
    <ns1:regUpResp>357.5</ns1:regUpResp>
    <ns1:regDnResp>389.0</ns1:regDnResp>
    <ns1:capGnIncreaseBp>4785.0078125</ns1:capGnIncreaseBp>
    <ns1:capGnDecreaseBp>24512.748046875</ns1:capGnDecreaseBp>
    <ns1:rtRvCapOn>18130.98046875</ns1:rtRvCapOn>
    <ns1:rtRvCapOnOff>23070.98046875</ns1:rtRvCapOnOff>
    <ns1:hslTEmr>78.0</ns1:hslTEmr>
    <ns1:hslTOut>17298.251953125</ns1:hslTOut>
    <ns1:hslTOutl>509.375915527344</ns1:hslTOutl>
    <ns1:ffrrt>0.0</ns1:ffrrt>
    <ns1:ffrrrscp>0.0</ns1:ffrrrscp>
    <ns1:ecrsCapacityGn>0.0</ns1:ecrsCapacityGn>
    <ns1:ecrsCapacityNcl>-0.000000000000748179195424347</ns1:ecrsCapacityNcl>
    <ns1:ecrsCapacityCl>0.0</ns1:ecrsCapacityCl>
    <ns1:ecrsCapacityQs>0.0</ns1:ecrsCapacityQs>
    <ns1:ecrsRespGn>0.0</ns1:ecrsRespGn>
    <ns1:ecrsRespNcl>0.0</ns1:ecrsRespNcl>
    <ns1:ecrsRespCl>0.0</ns1:ecrsRespCl>
    <ns1:ecrsRespQs>0.0</ns1:ecrsRespQs>
    <ns1:ecrsDeployed>0.0</ns1:ecrsDeployed>
</ns1:SystemParameters>

~~~ 2023-04-19T11:59:45-05:00
1160.73681640625
1462.20471191406
76.4300003051758
196.0
54.6940040588379
3197.169921875
559.830078125
150.734359741211
389.0
2569.84887695313
3765.91967773438
5760.798828125
26643.263671875
5997.5986328125
0.0
3.76999664306641
308.591522216797
0.0
206.765655517578
0.0
357.5
389.0
4785.0078125
24512.748046875
18130.98046875
23070.98046875
78.0
17298.251953125
509.375915527344
0.0
0.0
0.0
-0.000000000000748179195424347
0.0
0.0
0.0