Figure
From 2024 to 2025, CAISO was the only one of the seven major US power markets where the average day-ahead price fell (about 2%), held down by solar and storage, while every other grid rose between 19% (ERCOT) and 65% (NYISO).
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, "Day-ahead price change across seven US power markets, 2024-2025," Grid Flexibility, 2026. https://gridflexibility.fyi/case-studies/southern-california-edison/figures/cross-iso-lmp-2025
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Last updated: 2026-07-03.
