A List element to hold a DER object. More than one DER object SHALL NOT be included, but it should be noted that previous revisions of IEEE 2030.5 allowed more than one DER object. This single DER object represents the entire DER for the EndDevice and is the DER that acts upon DERControls. Components of this DER MAY be represented in the DERComponentList.<br/>
The default polling rate for this function set (this resource and all resources below), in seconds. If not specified, a default of 900 seconds (15 minutes) is used. Clients SHOULD poll the resources of this function set every pollRate seconds.<br/>