U.S. RANK #15 · SC 0.33% OF U.S. GENERATION
South Carolina Electricity Generation & Grid Mix
In 2025, South Carolina (SC) generated 105.21 TWh of electricity (0.33% of U.S. generation, ranked #15 among U.S. states). Its #1 electricity source was Nuclear at 56.67 TWh (53.9% of state output), while low-carbon sources supplied 61.2%.
2025 Generation 105.21 TWh U.S. Rank #15
#1 Power Source Nuclear 53.9% (56.7 TWh)
Low-Carbon Share 61.2% Wind + Solar: 3.8%
Fossil Share 38.8% 5Y Gen Change: +6.4%
CO2 Intensity 259 gCO2/kWh 27.3 Mt CO2 total
2025 South Carolina Grid Fuel Mix Breakdown (100% = 105.21 TWh)
Nuclear: 53.9% (56.67 TWh)
Natural Gas: 21.4% (22.49 TWh)
Coal: 17.3% (18.18 TWh)
Solar: 3.8% (3.97 TWh)
Hydroelectric: 2.1% (2.21 TWh)
Bioenergy: 1.5% (1.58 TWh)
GRID TELEMETRY · 2025 GENERATION MIX & 2000-2025 SERIES
61.2% Low-Carbon
South Carolina (SC) Electricity Generation by Source (2025)
2025 Total Output: 105.21 TWh · Carbon Intensity: 259 gCO2/kWh
Nuclear
56.67 TWh 53.9% +4%
Natural Gas
22.49 TWh 21.4% -7%
Coal
18.18 TWh 17.3% +46%
Solar
3.97 TWh 3.8% +90%
Hydroelectric
2.21 TWh 2.1% -31%
Bioenergy
1.58 TWh 1.5% -24%
Oil & Other Fossil
0.11 TWh 0.1% -1%
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South Carolina Historical Electricity Generation by Fuel (2001-2025)
| Year | Total (TWh) | Coal | Gas | Nuclear | Hydro | Wind | Solar | Clean % | gCO2/kWh |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 105.21 | 18.18 | 22.49 | 56.67 | 2.21 | 0.00 | 3.97 | 61.2% | 259 |
| 2024 | 101.12 | 16.84 | 22.81 | 53.77 | 2.16 | 0.00 | 3.56 | 60.6% | 261 |
| 2023 | 101.44 | 15.15 | 23.69 | 55.62 | 1.74 | 0.00 | 3.35 | 61.6% | 250 |
| 2022 | 99.23 | 14.24 | 24.14 | 54.37 | 1.31 | 0.00 | 2.94 | 61.1% | 252 |
| 2021 | 98.82 | 15.19 | 23.24 | 53.77 | 1.78 | 0.00 | 2.71 | 61.0% | 255 |
| 2020 | 98.90 | 12.46 | 24.23 | 54.75 | 3.18 | 0.00 | 2.09 | 62.8% | 237 |
| 2019 | 100.44 | 14.86 | 23.93 | 56.10 | 2.07 | 0.00 | 1.19 | 61.3% | 252 |
| 2018 | 99.61 | 19.50 | 21.65 | 52.72 | 2.31 | 0.00 | 0.76 | 58.3% | 282 |
| 2017 | 93.22 | 18.15 | 17.16 | 54.34 | 0.81 | 0.00 | 0.22 | 62.0% | 264 |
| 2016 | 97.02 | 21.00 | 16.37 | 55.83 | 1.25 | 0.00 | 0.04 | 61.3% | 274 |
| 2015 | 96.54 | 22.63 | 16.55 | 53.16 | 1.66 | 0.00 | 0.01 | 59.2% | 291 |
| 2014 | 97.16 | 28.91 | 11.41 | 52.42 | 1.68 | 0.00 | 0.01 | 58.2% | 316 |
| 2013 | 95.25 | 24.41 | 11.83 | 54.25 | 2.37 | 0.00 | 0.00 | 61.8% | 285 |
| 2012 | 96.76 | 28.40 | 14.33 | 51.15 | 0.52 | 0.00 | 0.00 | 55.6% | 326 |
| 2011 | 102.97 | 34.17 | 12.94 | 52.90 | 0.66 | 0.00 | 0.00 | 54.1% | 346 |
| 2010 | 104.13 | 37.67 | 10.93 | 51.99 | 1.44 | 0.00 | 0.00 | 53.1% | 360 |
| 2009 | 99.74 | 34.48 | 9.78 | 52.15 | 1.36 | 0.00 | 0.00 | 55.4% | 344 |
| 2008 | 100.93 | 41.54 | 5.73 | 51.76 | -0.14 | 0.00 | 0.00 | 53.0% | 377 |
| 2007 | 103.4 | 41.58 | 5.96 | 53.20 | 0.35 | 0.00 | 0.00 | 53.7% | 371 |
| 2006 | 99.25 | 39.47 | 6.07 | 50.80 | 0.69 | 0.00 | 0.00 | 53.8% | 369 |
| 2005 | 102.24 | 39.69 | 5.41 | 53.14 | 1.74 | 0.00 | 0.00 | 55.5% | 358 |
| 2004 | 97.45 | 38.92 | 3.80 | 51.20 | 1.30 | 0.00 | 0.00 | 55.7% | 361 |
| 2003 | 93.72 | 37.43 | 1.66 | 50.42 | 2.46 | 0.00 | 0.00 | 57.8% | 350 |
| 2002 | 96.56 | 36.95 | 4.50 | 53.33 | 0.25 | 0.00 | 0.00 | 56.8% | 348 |
| 2001 | 89.16 | 36.70 | 1.18 | 49.87 | 0.19 | 0.00 | 0.00 | 57.1% | 356 |