Japan Electricity: Generation Mix, Demand and Emissions
Japan generated 1,030 TWh of electricity in 2025, according to Ember. Gas was the largest source at 32.8%, followed by coal (32.1%) and solar (9.8%). Demand was 1,030 TWh and each kWh generated emitted 477 gCO2/kWh. These are annual statistics for 2025, with monthly figures through July 2026; they are compiled from national sources and are not real time.
Key Facts
- Japan generated 1,030 TWh of electricity in 2025.
- Gas supplied 32.8% of Japan's electricity in 2025.
- Coal supplied 32.1% of Japan's electricity in 2025.
- Solar supplied 9.8% of Japan's electricity in 2025.
- Low carbon sources (nuclear and renewables) supplied 32.7% of Japan's generation in 2025.
- The carbon intensity of Japan's electricity was 477 gCO2/kWh in 2025.
- Japan's carbon intensity in 2025 was 13% higher than in 1985, when it was 421 gCO2/kWh.
- Japan had the 5th highest electricity demand among the 93 countries with Ember data for 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Total generation | 1,030 TWh | 2025 · Ember |
| Electricity demand | 1,030 TWh | 2025 · Ember |
| Demand per person | 8.37 MWh | 2025 · Ember |
| Net imports | 0 TWh | 2025 · Ember |
| Carbon intensity | 477 gCO2/kWh | 2025 · Ember |
| Power sector emissions | 492 MtCO2 | 2025 · Ember |
| Demand rank (countries with 2025 data) | 5 of 93 | 2025 · Ember |
Generation Mix, 2025
Year by Year
Ember annual statistics, 1985 to 2025Annual statistics through 2025, TWh
| Year | Gas | Coal | Solar | Nuclear | Hydro |
|---|---|---|---|---|---|
| 1985 | 130 TWh | 101 TWh | 0 TWh | 160 TWh | 82.9 TWh |
| 1986 | 133 TWh | 100 TWh | 0 TWh | 165 TWh | 80.8 TWh |
| 1987 | 137 TWh | 109 TWh | 0 TWh | 189 TWh | 74.8 TWh |
| 1988 | 144 TWh | 114 TWh | 0 TWh | 174 TWh | 90.3 TWh |
| 1989 | 152 TWh | 118 TWh | 0 TWh | 186 TWh | 91.7 TWh |
| 1990 | 176 TWh | 121 TWh | 0 TWh | 195 TWh | 86.9 TWh |
| 1991 | 188 TWh | 128 TWh | 0 TWh | 209 TWh | 94.4 TWh |
| 1992 | 187 TWh | 134 TWh | 10.0 GWh | 217 TWh | 80.1 TWh |
| 1993 | 187 TWh | 143 TWh | 20.0 GWh | 248 TWh | 92.6 TWh |
| 1994 | 203 TWh | 160 TWh | 30.0 GWh | 258 TWh | 64.5 TWh |
| 1995 | 205 TWh | 172 TWh | 40.0 GWh | 287 TWh | 78.8 TWh |
| 1996 | 217 TWh | 182 TWh | 50.0 GWh | 297 TWh | 77.2 TWh |
| 1997 | 225 TWh | 192 TWh | 100 GWh | 321 TWh | 86.4 TWh |
| 1998 | 235 TWh | 196 TWh | 140 GWh | 326 TWh | 89.1 TWh |
| 1999 | 249 TWh | 215 TWh | 220 GWh | 317 TWh | 83.8 TWh |
| 2000 | 259 TWh | 238 TWh | 340 GWh | 319 TWh | 84.5 TWh |
| 2001 | 257 TWh | 254 TWh | 500 GWh | 321 TWh | 81.5 TWh |
| 2002 | 253 TWh | 264 TWh | 690 GWh | 314 TWh | 80.6 TWh |
| 2003 | 273 TWh | 292 TWh | 950 GWh | 230 TWh | 92.5 TWh |
| 2004 | 258 TWh | 295 TWh | 1.27 TWh | 286 TWh | 91.7 TWh |
| 2005 | 253 TWh | 319 TWh | 1.63 TWh | 293 TWh | 77.6 TWh |
| 2006 | 280 TWh | 311 TWh | 2.00 TWh | 304 TWh | 88.8 TWh |
| 2007 | 297 TWh | 317 TWh | 2.31 TWh | 279 TWh | 74.5 TWh |
| 2008 | 325 TWh | 334 TWh | 2.59 TWh | 252 TWh | 75.2 TWh |
| 2009 | 325 TWh | 312 TWh | 3.05 TWh | 275 TWh | 70.5 TWh |
| 2010 | 326 TWh | 317 TWh | 3.98 TWh | 292 TWh | 88.5 TWh |
| 2011 | 380 TWh | 285 TWh | 5.44 TWh | 163 TWh | 82.5 TWh |
| 2012 | 435 TWh | 334 TWh | 7.37 TWh | 18.0 TWh | 77.1 TWh |
| 2013 | 424 TWh | 363 TWh | 12.9 TWh | 14.6 TWh | 79.3 TWh |
| 2014 | 451 TWh | 356 TWh | 23.6 TWh | 0 TWh | 81.7 TWh |
| 2015 | 418 TWh | 350 TWh | 34.5 TWh | 4.52 TWh | 85.8 TWh |
| 2016 | 458 TWh | 339 TWh | 43.3 TWh | 17.7 TWh | 79.4 TWh |
| 2017 | 464 TWh | 363 TWh | 54.0 TWh | 29.1 TWh | 79.2 TWh |
| 2018 | 446 TWh | 361 TWh | 61.2 TWh | 49.1 TWh | 81.0 TWh |
| 2019 | 417 TWh | 351 TWh | 67.4 TWh | 65.6 TWh | 73.9 TWh |
| 2020 | 409 TWh | 340 TWh | 75.9 TWh | 43.0 TWh | 78.3 TWh |
| 2021 | 386 TWh | 348 TWh | 84.2 TWh | 61.2 TWh | 79.6 TWh |
| 2022 | 379 TWh | 351 TWh | 91.1 TWh | 51.8 TWh | 74.9 TWh |
| 2023 | 347 TWh | 327 TWh | 96.4 TWh | 77.5 TWh | 74.5 TWh |
| 2024 | 346 TWh | 327 TWh | 96.7 TWh | 84.9 TWh | 79.5 TWh |
| 2025 | 338 TWh | 330 TWh | 101 TWh | 94.1 TWh | 73.9 TWh |
| Year | Generation | Demand | Carbon intensity |
|---|---|---|---|
| 2025 | 1,030 TWh | 1,030 TWh | 477 gCO2/kWh |
| 2024 | 1,016 TWh | 1,016 TWh | 484 gCO2/kWh |
| 2023 | 1,007 TWh | 1,007 TWh | 493 gCO2/kWh |
| 2022 | 1,041 TWh | 1,041 TWh | 520 gCO2/kWh |
| 2021 | 1,035 TWh | 1,035 TWh | 515 gCO2/kWh |
| 2020 | 1,011 TWh | 1,011 TWh | 528 gCO2/kWh |
| 2019 | 1,047 TWh | 1,047 TWh | 529 gCO2/kWh |
| 2018 | 1,083 TWh | 1,083 TWh | 542 gCO2/kWh |
| 2017 | 1,077 TWh | 1,077 TWh | 558 gCO2/kWh |
| 2016 | 1,064 TWh | 1,064 TWh | 567 gCO2/kWh |
Full year by year history for Japan, 1985 to 2025
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.
Month by Month
Ember monthly statistics through July 2026Monthly statistics through July 2026, TWh
| Month | Demand | Generation |
|---|---|---|
| 2024-08 | 87.9 TWh | 87.9 TWh |
| 2024-09 | 80.6 TWh | 80.6 TWh |
| 2024-10 | 70.2 TWh | 70.2 TWh |
| 2024-11 | 68.0 TWh | 68.0 TWh |
| 2024-12 | 81.3 TWh | 81.2 TWh |
| 2025-01 | 86.4 TWh | 86.4 TWh |
| 2025-02 | 81.4 TWh | 81.4 TWh |
| 2025-03 | 77.3 TWh | 77.3 TWh |
| 2025-04 | 66.2 TWh | 66.2 TWh |
| 2025-05 | 64.9 TWh | 64.9 TWh |
| 2025-06 | 72.8 TWh | 72.8 TWh |
| 2025-07 | 89.8 TWh | 89.8 TWh |
| 2025-08 | 88.1 TWh | 88.1 TWh |
| 2025-09 | 80.0 TWh | 80.0 TWh |
| 2025-10 | 70.2 TWh | 70.2 TWh |
| 2025-11 | 69.4 TWh | 69.4 TWh |
| 2025-12 | 80.9 TWh | 80.9 TWh |
| 2026-01 | 87.9 TWh | 87.9 TWh |
| 2026-02 | 77.0 TWh | 77.0 TWh |
| 2026-03 | 78.0 TWh | 78.0 TWh |
| 2026-04 | 64.9 TWh | 64.9 TWh |
| 2026-05 | 65.7 TWh | 65.7 TWh |
| 2026-06 | 67.8 TWh | 67.7 TWh |
| 2026-07 | 85.2 TWh | 85.1 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of July 2026.
Japan Electricity FAQ
What is the main source of electricity in Japan?
Gas was the largest source of electricity in Japan in 2025, supplying 32.8% of generation, followed by coal (32.1%) and solar (9.8%). Figures are Ember annual statistics.
How much electricity does Japan use?
Japan used 1,030 TWh of electricity in 2025, about 8.37 MWh per person.
How clean is Japan's electricity?
Generating a kilowatt hour of electricity in Japan emitted 477 gCO2/kWh in 2025, and low carbon sources supplied 32.7% of generation. That is 4% above the world average of 459 gCO2/kWh.