RTD Indicative LMPs

This section describes interfaces used to retrieve RTD Indicative LMPs. This report will provide the final LMP at every settlement point for every interval in a particular RTD Study Period. The request message would use the following message fields:

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

The structure of RTD Indicative LMPs are described by the following diagram:

The following elements are used to report RTD Indicative LMPs:

• RTD Timestamp

• Repeated Hour Flag which indicates the extra hour on the DST long day

• Interval ID

• Interval Ending

• Interval Repeated Hour Flag

• Settlement Point

• Settlement Point Type

• LMP

The following is an XML example:

<ns1:RTDIndicativeLMPs xmlns:ns0="http://www.ercot.com/schema/2007-05/nodal/eip/il"
    xmlns:ns1="http://www.ercot.com/schema/2007-06/nodal/ews">
    <ns1:RTDIndicativeLMP>
        <ns1:RTDTimestamp>03/21/2012 16:19:01</ns1:RTDTimestamp>
        <ns1:RepeatedHourFlag>N</ns1:RepeatedHourFlag>
        <ns1:IntervalId>1</ns1:IntervalId>
        <ns1:IntervalEnding>03/21/2012 16:25:00</ns1:IntervalEnding>
        <ns1:IntervalRepeatedHourFlag>N</ns1:IntervalRepeatedHourFlag>
        <ns1:SettlementPoint>STLP_ALL</ns1:SettlementPoint>
        <ns1:SettlementPointType>RN</ns1:SettlementPointType>
        <ns1:LMP>17.73</ns1:LMP>
    </ns1:RTDIndicativeLMP>
</ns1:RTDIndicativeLMPs>