System Load

The purpose of this interface is to provide the means to obtain real-time system load from ERCOT. The request message would use the following message fields:

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

The structure of SystemLoad is described by the following diagram. This used a TmSchedule:

The following is an XML example:

<SystemLoad xsi:schemaLocation="http://www.ercot.com/schema/2007-06/nodal/ewsErcotInformation.xsd"
    xmlns="http://www.ercot.com/schema/2007-06/nodal/ews"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <startTime>2007-07-25T00:00:00-06:00</startTime>
    <endTime>2007-07-25T00:00:00-06:00</endTime>
    <TmPoint>
        <time>2007-07-25T00:00:00-06:00</time>
        <ending>2007-07-25T00:00:00-06:00</ending>
        <value1>12.14</value1>
    </TmPoint>
</SystemLoad>