DAM Total Ancillary Services Sold

Info

New interface with RTC+B Implementation

This section describes interfaces used to retrieve DAM Total Ancillary Services Sold.
The request message would use the following message fields:

Message Element Value
Header/Verb get
Header/Noun TotalASSoldDAM
Header/Source Market participant ID
Header/UserID ID of user
Request/StartTime Start time of interest
Request/EndTime End time of interest

The corresponding response messages would use the following message fields:

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

The structure of DAMASSOLDs is described by the following diagram:

DAMASSOLDs Structure

DAMASSOLD Structure

The following elements are used to report DAM Ancillary Services Sold:

  • Delivery Date
  • Hour Ending
  • AS Type
  • Quantity
  • Repeated Hour Flag

The following is an XML example:

<ns1:DAMASSOLDs xmlns:ns1="http://www.ercot.com/schema/2007-06/nodal/ews">
               <ns1:DAMASSOLD>
                  <ns1:DeliveryDate>09/11/2025</ns1:DeliveryDate>
                  <ns1:HourEnding>01:00</ns1:HourEnding>
                  <ns1:ASType>ECRSM</ns1:ASType>
                  <ns1:Quantity>398.9</ns1:Quantity>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
               </ns1:DAMASSOLD>
               <ns1:DAMASSOLD>
                  <ns1:DeliveryDate>09/11/2025</ns1:DeliveryDate>
                  <ns1:HourEnding>01:00</ns1:HourEnding>
                  <ns1:ASType>ECRSS</ns1:ASType>
                  <ns1:Quantity>307.7</ns1:Quantity>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
               </ns1:DAMASSOLD>
               <ns1:DAMASSOLD>
                  <ns1:DeliveryDate>09/11/2025</ns1:DeliveryDate>
                  <ns1:HourEnding>01:00</ns1:HourEnding>
                  <ns1:ASType>OFFEC</ns1:ASType>
                  <ns1:Quantity>669.6</ns1:Quantity>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
               </ns1:DAMASSOLD>
               <ns1:DAMASSOLD>
                  <ns1:DeliveryDate>09/11/2025</ns1:DeliveryDate>
                  <ns1:HourEnding>01:00</ns1:HourEnding>
                  <ns1:ASType>OFFNS</ns1:ASType>
                  <ns1:Quantity>2172.0</ns1:Quantity>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
               </ns1:DAMASSOLD>
               …
               <ns1:DAMASSOLD>
                  <ns1:DeliveryDate>09/11/2025</ns1:DeliveryDate>
                  <ns1:HourEnding>24:00</ns1:HourEnding>
                  <ns1:ASType>RRSUF</ns1:ASType>
                  <ns1:Quantity>1443.9</ns1:Quantity>
                  <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
               </ns1:DAMASSOLD>
            </ns1:DAMASSOLDs>