Ancillary Service Plan

This section describes interfaces used to retrieve the Ancillary Service Plan for the DAM market. The interface returns hourly values for the next 7 days (168 hours)

The request message would use the following message fields:

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

The corresponding response messages would use the following message fields:

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

The payload structure is described by the following diagram:

ASServicePlan

The values of ‘value1’ identify the total scheduled MW capacity for the given AS type.

The following is an XML example:

<ns1:ASServicePlan xmlns:ns0="http://www.ercot.com/schema/2007-05/nodal/eip/il"
    xmlns:ns1="http://www.ercot.com/schema/2007-06/nodal/ews">
    <ns1:ASServicePlan>
        <ns1:asType>Reg-Up</ns1:asType>
        <ns1:Schedule>
            <ns1:time>2023-04-19T00:00:00-05:00</ns1:time>
            <ns1:ending>2023-04-19T01:00:00-05:00</ns1:ending>
            <ns1:value1>271.0</ns1:value1>
        </ns1:Schedule>
        <ns1:Schedule>
            <ns1:time>2023-04-19T01:00:00-05:00</ns1:time>
            <ns1:ending>2023-04-19T02:00:00-05:00</ns1:ending>
            <ns1:value1>219.0</ns1:value1>
        </ns1:Schedule> … </ns1:ASServicePlan>
    <ns1:ASServicePlan>
        <ns1:asType>Reg-Down</ns1:asType>
        <ns1:Schedule> ... </ns1:Schedule>
    </ns1:ASServicePlan>
    <ns1:ASServicePlan>
        <ns1:asType>RRS</ns1:asType>
        <ns1:Schedule> ... </ns1:Schedule>
    </ns1:ASServicePlan>
    <ns1:ASServicePlan>
        <ns1:asType>Non-Spin</ns1:asType>
        <ns1:Schedule> ... </ns1:Schedule>
    </ns1:ASServicePlan>
    <ns1:ASServicePlan>
        <ns1:asType>ECRS</ns1:asType>
        <ns1:Schedule> ... </ns1:Schedule>
    </ns1:ASServicePlan>
</ns1:ASServicePlan>