Beta test—v1.4
By using this site, you agree to the Beta-Test Agreement.
Access Level: Public
HomeState Report CardPolicy ScenariosElectricity AdequacyAbout

Electricity Adequacy

Year:
Balancing Authority:

California ISO 2021 Electricity Adequacy

Available Capacity
72,718 MW

Peak Generation
41,754 MW
July 9, 4pm

Peak Demand
43,615 MW
September 8, 6pm

Summer Peak Demand
42,689 MW
July 9, 6pm

Winter Peak Demand
31,226 MW
December 14, 7pm

2021 Daily Metrics

Top 100 Plants Scaled by Capacity — 2021

Assessment of Resources

ResourceCapacityImportsCapacity FactorMultiplier Expected Capacity
Natural Gas 33,028 27% 26,422
Solar 16,111 25% 4,028
Hydro 6,706 17% 1,140
Wind 6,187 28% 1,732
Energy Storage 4,386 -1% 3,509
Nuclear 2,323 81% 2,091
Geothermal 2,104 44% 1,683
Biomass/Wood 848 42% 678
Petroleum 393 1% 314
Waste 341 52% 273
Coal 63 46% 50
Los Angeles Department of Water and Power  3,626  1,487
Bonneville Power Administration  3,128  1,408
Salt River Project Agricultural Improvement and Power District  2,579  1,290
Nevada Power Company  1,780  979
Arizona Public Service Company  1,685  725
Balancing Authority of Northern California  1,679  487
Imperial Irrigation District  731  314
Western Area Power Administration - Desert Southwest Region  649  234
Turlock Irrigation District  403  81
PacifiCorp West  50  14
Total72,49016,310   48,939

Demand Scenarios Capacity Demand Capacity Reserve Margin
2021 Peak Demand (9/8/21) 48,939 43,615 12%
2021 Peak Summer Demand (7/9/21) 48,939 42,689 15%
2021 Peak Winter Demand (12/14/21) 48,939 31,226 57%
5-Year Peak Demand (9/1/17) 48,939 49,899 -2%
5-Year Peak Summer Demand (8/28/17) 48,939 47,349 3%
5-Year Peak Winter Demand (1/23/17) 48,939 31,290 56%
Data compiled using information from EIA Form 860, Form 861, Form 923, the EIA API, EPA Pollution Data, and the Census Bureau

Interesting in providing feedback? Click below to email our development team:
Email development@resilientsocieties.org

Interesting in supporting our work? Click below to donate to Resilient Societies:
Donate Today!