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Stakeholders urge CPUC harmonization of data formats, sampling rules and re‑examination of NEM exclusion
Summary
In discussion panels IOUs and vendors asked the CPUC to align data formats (ESPI vs CSV/SFTP), clarify acceptable transport protocols, and reconsider annual sampling and the exclusion of net energy metering customers from submetering. SDG&E described the practical CSV/SFTP files it needs to onboard MDMA partners.
Industry and utility participants pressed the California Public Utilities Commission for clearer, harmonized rules covering data format, secure transfer and device certification, and called for a targeted review of the decision that excludes NEM customers from submetering.
SDG&E project manager James McCloskey described the operational exchanges his billing system expects: “there's effectively 3 CSV files of note, 2 that are inbound and 1 that is picked up by the EVSP … the inbound 1 is the meter data file that's used for billing. And then there's an enrollment file … and then we have an enrollment response.” McCloskey said SDG&E implemented secure file transfers (SFTP) for daily file pickup and that CSV/SFTP is a baseline that…
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