Figure

Grid batteries versus enrolled demand on SCE's 2025 evening peak

On SCE's 4-to-9 PM peak in 2025, CAISO's roughly 15 GW grid-battery fleet put a median 5.4 GW onto the ramp, while the home batteries enrolled in a grid program delivered about 7 MW, SCE's demand-response portfolio delivered about 530 MW of 680 MW enrolled, and the 1.6 million households in the mass behavioral program were not called.

Bar chart comparing capacity on SCE's 4-to-9 PM evening peak in 2025. CAISO grid batteries: median 5.4 GW dispatched. SCE demand response: about 530 MW dispatched of 680 MW enrolled. Program-enrolled home batteries: 7 MW. Mass behavioral program: 1.6 million households enrolled, not called.

This figure is from the Southern California Edison case study, a primary-source look at how California procured storage and what pointing the same playbook at demand would add.

Cite this figure

Corey Balgeman, "Grid batteries versus enrolled demand on SCE's 2025 evening peak," Grid Flexibility, 2026. https://gridflexibility.fyi/case-studies/southern-california-edison/figures/sce-resource-enrolled-vs-dispatched

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Last updated: 2026-07-03.