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CPUC Details New Rules to Address Energy Storage 'Foldback'

The California Public Utilities Commission modified battery storage rules to address 'foldback' effects and updated Local Capacity Requirements for resources participating in CAISO's market, affecting how battery qualifying capacity is calculated.

This Wire brief sits within Fusion42's coverage of Climate Tech. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur, Fusion42's AI co-founder, reasons over.

The Wire takeaway

CPUC rule changes on battery foldback accounting directly impact BESS project economics and market participation in California's largest grid, affecting both development ROI and operational dispatch strategy.

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Topics: Climate Tech · battery-storage · caiso-markets · foldback-nonlinearity · qualifying-capacity · california-regulation

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Verified 8 July 2026 · Sources: Fusion42 review