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SDG&E defends 15/15 redaction policy; stakeholders call for limits on data suppression
Summary
San Diego Gas & Electric said its ICA portal redacts ICA results and hourly profiles for circuits or substations that fail the CPUC’s 15/15 customer‑privacy threshold; developers and advocates asked the commission to require more narrowly targeted redactions and to quantify how much data is masked.
San Diego Gas & Electric told stakeholders it redacts ICA results and hourly profile downloads for circuits and substations that fail the CPUC’s ‘‘15/15’’ customer‑privacy threshold — a policy the utility urged is grounded in past rulings and intended to protect small numbers of customers on a single circuit.
SDG&E planning policy manager Yi Li and engineer Zohay Batik described the utility’s implementation: when a substation serves 15 or fewer customers, or a single customer consumes 15% or more of a substation’s load, SDG&E displays the substation footprint on the portal but withholds the substation’s generation and load totals and disables the substation profile download. For circuits that fail the 15/15 test, SDG&E blocks display and download of ICA results (generation and load ICA outputs) for line sections on those circuits.
Why it matters: Several stakeholders said SDG&E’s implementation goes beyond protecting customer privacy and can materially reduce the usefulness of the ICA map, particularly where many circuits feed military bases or critical customers — SDG&E staff said such customers are precisely why protections are necessary.
Stakeholder concerns and requests: - IREC and developers asked SDG&E to quantify how many circuits and what share of the territory are affected by 15/15 redactions and to offer case‑by‑case access processes for legitimate developers or public agencies who need the data (NDAs, direct data requests, or secure portals). - Advocates said utilities should limit redaction to the minimal fields required to protect customer confidentiality rather than suppressing broader ICA results.
SDG&E response: SDG&E said its redaction approach follows CPUC ALJ rulings and the utility’s Tier 2/Tier 3 filings in prior proceedings. The utility offered to provide further detail in its biannual reporting and in the remediation Tier 3 advice letter, and said it will accept specific requests to provide data to authenticated customers under controlled processes.
What remains unresolved: Parties asked CPUC staff to review whether broader ICA fields (for example, volt/thermal limit flags) can be published without exposing customer telemetry; SDG&E said it will provide additional counts of affected circuits in upcoming filings and can review case‑by‑case disclosure under NDAs.
