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U.S. RANK #4 · CA 0.76% OF U.S. GENERATION

California Electricity Generation & Grid Mix

In 2025, California (CA) generated 241.17 TWh of electricity (0.76% of U.S. generation, ranked #4 among U.S. states). Its #1 electricity source was Solar at 90.10 TWh (37.4% of state output), while low-carbon sources supplied 69.7%.

2025 Generation 241.17 TWh U.S. Rank #4
#1 Power Source Solar 37.4% (90.1 TWh)
Low-Carbon Share 69.7% Wind + Solar: 44.1%
Fossil Share 30.4% 5Y Gen Change: +14.2%
CO2 Intensity 177 gCO2/kWh 42.7 Mt CO2 total
2025 California Grid Fuel Mix Breakdown (100% = 241.17 TWh)
Solar: 37.4% (90.10 TWh) Natural Gas: 30.4% (73.33 TWh) Hydroelectric: 11.7% (28.12 TWh) Nuclear: 7.3% (17.56 TWh) Wind: 6.7% (16.26 TWh) Geothermal & Other: 4.8% (11.51 TWh)
GRID TELEMETRY · 2025 GENERATION MIX & 2000-2025 SERIES

California (CA) Electricity Generation by Source (2025)

2025 Total Output: 241.17 TWh · Carbon Intensity: 177 gCO2/kWh

Solar
90.10 TWh 37.4%
Natural Gas
73.33 TWh 30.4%
Hydroelectric
28.12 TWh 11.7%
Nuclear
17.56 TWh 7.3%
Wind
16.26 TWh 6.7%
Geothermal & Other
11.51 TWh 4.8%
Bioenergy
4.44 TWh 1.8%
Coal
0.23 TWh 0.1%
Source: Ember Yearly Electricity Data & U.S. EIA · Unit: Terawatt-hours (TWh) #1 Power Source: Solar (37.4% of grid)

California Historical Electricity Generation by Fuel (2001-2025)

Year Total (TWh) Coal Gas Nuclear Hydro Wind Solar Clean % gCO2/kWh
2025 241.17 0.23 73.33 17.56 28.12 16.26 90.10 69.7% 177
2024 246.73 0.25 86.66 18.38 29.41 15.65 80.15 64.7% 200
2023 245.33 0.21 94.39 17.72 31.99 14.02 68.98 61.0% 217
2022 228.19 0.25 96.37 17.59 17.49 14.64 62.91 56.9% 237
2021 217.8 0.29 97.43 16.48 14.36 15.18 54.71 54.2% 250
2020 211.25 0.29 92.05 16.26 21.34 13.58 47.68 55.2% 245
2019 217.79 0.24 85.84 16.17 38.32 13.74 43.49 59.4% 225
2018 209.19 0.28 89.80 18.21 26.18 14.02 39.90 55.8% 242
2017 217.53 0.29 88.35 17.90 42.77 12.82 34.96 58.2% 230
2016 205.97 0.32 97.07 18.91 28.68 13.51 27.04 51.7% 260
2015 203.56 0.30 116.14 18.51 13.92 12.23 20.83 41.6% 307
2014 204.35 0.80 120.43 16.99 16.43 12.99 14.61 39.6% 317
2013 200.93 0.82 119.52 17.91 23.95 12.82 3.81 39.0% 318
2012 200.11 1.38 119.67 18.51 27.41 9.75 1.38 38.3% 322
2011 200.68 1.98 88.97 36.66 42.47 7.75 0.89 53.4% 252
2010 203.76 2.10 107.52 32.20 33.26 6.08 0.77 44.9% 292
2009 204 2.05 113.46 31.76 28.04 5.84 0.65 42.1% 305
2008 207.05 2.28 119.99 32.48 24.45 5.38 0.67 39.8% 315
2007 209.44 2.30 115.7 35.79 27.64 5.58 0.56 42.5% 303
2006 215.31 2.24 105.69 31.96 48.14 4.88 0.49 48.6% 274
2005 198.64 2.14 93.35 36.15 39.75 4.26 0.54 50.4% 266
2004 193.29 2.24 100.22 30.27 33.32 4.31 0.57 45.6% 289
2003 191.5 2.33 91.43 35.59 35.46 3.90 0.53 49.8% 270
2002 182.23 2.33 89.62 34.35 30.90 3.80 0.00 48.6% 275
2001 196.34 2.23 111.93 33.22 25.19 3.50 0.00 40.7% 311