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SCE details causes of 'false zeros' and sets Q4 2025 milestones for many fixes
Summary
Southern California Edison told the CPUC quarterly ICA workshop it has reduced some false-zero ICA results by addressing equipment-modeling conflicts and data gaps, published a biannual report Jan. 31, 2025, and set target dates — including Q4 2025 and Q3 2026 — for larger remediation and a forecast-capable load ICA (FLICA).
Southern California Edison presented its Integration Capacity Analysis methodology and remediation plans, telling stakeholders the company has made measurable reductions in circuits reporting zero available hosting capacity by addressing data and modeling defects.
SCE case manager Ari Altman outlined the regulatory background and said the IOUs published their first biannual ICA reports on Jan. 31, 2025 and that "ordering paragraph 35 of the October decision did require IOUs to hold a quarterly ICA public workshop," framing the requirement that led to the day’s presentations.
SCE engineers described the iterative ICA algorithm used to measure capacity against multiple technical criteria (steady-state voltage, voltage fluctuation, thermal limits, protection and operational flexibility) and said results are updated monthly on the utility’s external portal, Doctor PEP.…
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