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Data as of 2025
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Built 2026-09-19 (19 September 2026)

Japan vs Vietnam: Electricity Compared

Japan generated 1,030 TWh of electricity in 2025 and Vietnam 329 TWh, according to Ember. Japan's largest source was gas (32.8%); Vietnam's was coal (47.8%). Each kWh generated emitted 477 gCO2/kWh in Japan and 459 gCO2/kWh in Vietnam. These are Ember annual statistics for 2025, compiled from national sources; they are not real time.

Why this comparison: both among the 20 largest electricity users.

Key Facts

  • Gas supplied 32.8% of Japan's electricity in 2025, against 6.0% in Vietnam.
  • The average person in Japan used 8.37 MWh of electricity in 2025, 2.7 times as much as in Vietnam (3.09 MWh).
  • Low carbon sources supplied 32.7% of Japan's electricity in 2025 and 46.1% of Vietnam's.
  • Electricity demand in 2025 was 1,030 TWh in Japan and 332 TWh in Vietnam.

Key Figures, 2025

Ember annual statistics
MeasureJapanVietnam
Total generation1,030 TWh329 TWh
Electricity demand1,030 TWh332 TWh
Demand per person8.37 MWh3.09 MWh
Carbon intensity477 gCO2/kWh459 gCO2/kWh
Power sector emissions492 MtCO2151 MtCO2
Low carbon share32.7%46.1%
Largest sourceGas 32.8%Coal 47.8%

Generation Mix, 2025

Share of generation
SourceJapanVietnam
Coal 32.1% 47.8%
Gas 32.8% 6.0%
Hydro 7.2% 31.0%
Solar 9.8% 10.3%
Nuclear 9.1% 0.0%
Bioenergy 5.3% 0.4%
Wind 1.3% 4.5%
Other fossil 2.5% 0.2%

Carbon Intensity, 1985 to 2025

Ember annual statistics
Carbon intensity of electricity in Japan and Vietnam, 1985 to 2025 Carbon intensity of electricity generated in Japan and Vietnam each year from 1985 to 2025, in gCO2/kWh. In 2025 it was 477 gCO2/kWh in Japan and 459 gCO2/kWh in Vietnam. 0 200 400 600 800 198519901995200020052010201520202025
Carbon intensity of electricity generated in Japan and Vietnam each year from 1985 to 2025, in gCO2/kWh. In 2025 it was 477 gCO2/kWh in Japan and 459 gCO2/kWh in Vietnam.
Annual statistics through 2025, gCO2/kWh
Carbon intensity of electricity in Japan and Vietnam, 1985 to 2025
YearJapanVietnam
1985421 gCO2/kWh579 gCO2/kWh
1986417 gCO2/kWh609 gCO2/kWh
1987417 gCO2/kWh632 gCO2/kWh
1988427 gCO2/kWh610 gCO2/kWh
1989429 gCO2/kWh428 gCO2/kWh
1990447 gCO2/kWh320 gCO2/kWh
1991438 gCO2/kWh258 gCO2/kWh
1992445 gCO2/kWh206 gCO2/kWh
1993419 gCO2/kWh198 gCO2/kWh
1994444 gCO2/kWh202 gCO2/kWh
1995424 gCO2/kWh227 gCO2/kWh
1996423 gCO2/kWh235 gCO2/kWh
1997408 gCO2/kWh302 gCO2/kWh
1998404 gCO2/kWh356 gCO2/kWh
1999419 gCO2/kWh301 gCO2/kWh
2000424 gCO2/kWh322 gCO2/kWh
2001424 gCO2/kWh291 gCO2/kWh
2002434 gCO2/kWh344 gCO2/kWh
2003476 gCO2/kWh376 gCO2/kWh
2004450 gCO2/kWh407 gCO2/kWh
2005462 gCO2/kWh462 gCO2/kWh
2006447 gCO2/kWh448 gCO2/kWh
2007470 gCO2/kWh439 gCO2/kWh
2008485 gCO2/kWh422 gCO2/kWh
2009460 gCO2/kWh413 gCO2/kWh
2010447 gCO2/kWh452 gCO2/kWh
2011505 gCO2/kWh408 gCO2/kWh
2012595 gCO2/kWh372 gCO2/kWh
2013596 gCO2/kWh374 gCO2/kWh
2014592 gCO2/kWh404 gCO2/kWh
2015578 gCO2/kWh487 gCO2/kWh
2016567 gCO2/kWh492 gCO2/kWh
2017558 gCO2/kWh433 gCO2/kWh
2018542 gCO2/kWh486 gCO2/kWh
2019529 gCO2/kWh557 gCO2/kWh
2020528 gCO2/kWh531 gCO2/kWh
2021515 gCO2/kWh475 gCO2/kWh
2022520 gCO2/kWh415 gCO2/kWh
2023493 gCO2/kWh467 gCO2/kWh
2024484 gCO2/kWh477 gCO2/kWh
2025477 gCO2/kWh459 gCO2/kWh

Demand per Person, 1985 to 2025

Ember annual statistics
Electricity demand per person in Japan and Vietnam, 1985 to 2025 Electricity demand per person in Japan and Vietnam each year from 1985 to 2025, in MWh. In 2025 it was 8.37 MWh in Japan and 3.09 MWh in Vietnam. 0.0 2.5 5.0 7.5 10.0 198519901995200020052010201520202025
Electricity demand per person in Japan and Vietnam each year from 1985 to 2025, in MWh. In 2025 it was 8.37 MWh in Japan and 3.09 MWh in Vietnam.
Annual statistics through 2025, MWh
Electricity demand per person in Japan and Vietnam, 1985 to 2025
YearJapanVietnam
1985n/an/a
1986n/an/a
1987n/an/a
1988n/an/a
1989n/an/a
1990n/an/a
1991n/an/a
1992n/an/a
1993n/an/a
1994n/an/a
1995n/an/a
1996n/an/a
1997n/an/a
1998n/an/a
1999n/an/a
20008.66 MWh0.34 MWh
20018.51 MWh0.39 MWh
20028.65 MWh0.45 MWh
20038.56 MWh0.51 MWh
20048.77 MWh0.58 MWh
20059.01 MWh0.65 MWh
20069.10 MWh0.72 MWh
20079.21 MWh0.80 MWh
20089.24 MWh0.87 MWh
20098.69 MWh0.98 MWh
20109.02 MWh1.10 MWh
20118.62 MWh1.19 MWh
20128.65 MWh1.30 MWh
20138.52 MWh1.40 MWh
20148.34 MWh1.56 MWh
20158.09 MWh1.76 MWh
20168.37 MWh1.92 MWh
20178.48 MWh2.05 MWh
20188.53 MWh2.27 MWh
20198.27 MWh2.45 MWh
20208.01 MWh2.50 MWh
20218.23 MWh2.57 MWh
20228.33 MWh2.68 MWh
20238.10 MWh2.79 MWh
20248.21 MWh3.04 MWh
20258.37 MWh3.09 MWh

Japan history · Vietnam history

Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025.

  • Japan electricity: generation mix, demand and emissions for Japan, with monthly figures where Ember has them.
  • Vietnam electricity: generation mix, demand and emissions for Vietnam, with monthly figures where Ember has them.
  • India vs Japan: coal 71% of generation in India against 32% in Japan, 2025.
  • Brazil vs Japan: hydro 52% of generation in Brazil against 7% in Japan, 2025.
  • Canada vs Japan: hydro 53% of generation in Canada against 7% in Japan, 2025.
  • France vs Japan: nuclear 69% of generation in France against 9% in Japan, 2025.
  • Iran vs Japan: gas 73% of generation in Iran against 33% in Japan, 2025.
  • Japan vs Mexico: coal 32% of generation in Japan against 3% in Mexico, 2025.
  • Indonesia vs Japan: coal 61% of generation in Indonesia against 32% in Japan, 2024.
  • Japan vs United Kingdom: coal 32% of generation in Japan against 1% in the United Kingdom, 2025.
  • All country comparisons: every comparison, grouped by continent.
  • All countries: generation, fuel mix and carbon intensity by continent.
  • Methodology: where the figures come from and why annual statistics and live data are kept apart.