Zero Carbon Days
Some days around midday, California's wind and solar are forecast to produce more power than the whole state needs. Charging your EV in those hours adds less carbon.
Upcoming in California
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Get an email before zero-carbon days
We'll let you know when one is coming, so you can plan your charging.
How this works
We read CAISO's 7-day forecast and look for hours when the day-ahead net demand forecast (demand minus wind and solar) is below zero. "Peak excess" is how far below zero it goes, in megawatts. During those hours, wind and solar together are forecast to be more than demand.