Cleanview

Nuclear power plants in CAISO

CAISO has 1 operating nuclear power plants with 2.3 GW of capacity.

  • Operating1

Under 250 MW250–999 MW1 GW and up

Updated monthly. Last updated November 2026.

The largest nuclear power plants in CAISO

Operating, by capacity

#Nuclear power plantYear onlineCapacity
1Diablo Canyon19862,323 MW

Nuclear power plants that came online most recently in CAISO

Newest first

#Nuclear power plantYear onlineCapacity
1Diablo Canyon19862,323 MW
The developer behind each project is on paid plans. See plans

How Cleanview tracks nuclear power plants

Operating nuclear power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about nuclear power plants in CAISO

How many nuclear power plants are in CAISO?
CAISO has 1 operating utility-scale nuclear power plants with 2.3 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest nuclear power plant in CAISO?
Diablo Canyon in San Luis Obispo County, California is the largest, at 2,323 MW. It came online in 1986.
How many nuclear power plants were built in CAISO in 2025?
0 nuclear power plants came online in CAISO in 2025, with 0 MW of capacity.
Who is developing nuclear power plants in CAISO?
Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

More energy trackers for CAISO

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