Implement a FERC Order 2222 DERA-EDC communication workflow to exchange enrollment, dispatch, and metering data between a DER aggregator and a distribution utility
Identify the applicable state-level EDC communication rules: per the FERC 2222 tracker (July 2025 report), states including New Jersey, Maryland, Virginia, Pennsylvania, and Illinois have advanced DERA-EDC communication frameworks; retrieve the applicable state commission order or rule
Implement the enrollment data exchange: the DERA sends a new enrollment notification to the EDC containing DER site ID, meter account number, device type, rated kW, and the RTO/ISO resource ID; the EDC responds with confirmation or rejection with reason code
Configure the dispatch notification flow: when the RTO/ISO dispatches the DER aggregation, the DERA notifies the EDC via the agreed channel (often a structured email, EDI message, or API call depending on state rules) with event start time, expected MW reduction, and duration
Arrange the metering data exchange: after the dispatch event, the DERA requests 5-minute interval AMI data from the EDC for the enrolled meters; the EDC provides data via Green Button Connect (ESPI) or the state's data access mechanism within the required timeframe
Handle the unenrollment notification: when a customer unenrolls from the DR program, the DERA sends an unenrollment message to the EDC within 24 hours to prevent duplicate dispatch credits
Document the communication protocol in the Coordination Agreement between DERA and EDC as required by FERC Order 2222 Section III.D; retain records for RTO/ISO audit purposes
Known gotchas
FERC Order 2222 requires EDC-DERA coordination but leaves the specific communication format to state regulators; there is no single national standard protocol — the format (REST API, ESPI, email template, EDI) depends on each state commission's ruling and may differ between utilities in the same state
Several states had not yet adopted DERA-EDC communication rules as of mid-2025; in states without rules, the DERA and EDC may need to negotiate a bilateral coordination agreement outside any formal framework, which can take 6-12 months to execute
Mismatched meter IDs between the DERA enrollment database and the EDC's AMI system are the most common cause of metering data exchange failures; always validate the EDC meter account number against the EDC's customer account lookup before finalizing enrollment
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