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Built 2026-11-05 (5 November 2026)

Iran vs Japan: Electricity Compared

Iran generated 399 TWh of electricity in 2025 and Japan 1,027 TWh, according to Ember. Gas was the largest source in both, at 73.3% in Iran and 32.7% in Japan. Each kWh generated emitted 656 gCO2/kWh in Iran and 474 gCO2/kWh in Japan. These are Ember annual statistics for 2025, compiled from national sources; they are not real time.

Who is bigger and who is cleaner? Japan is the bigger electricity producer, generating 2.6 times as much as Iran in 2025 (1,027 TWh against 399 TWh). Japan has the cleaner electricity by carbon intensity, at 474 gCO2/kWh against 656 gCO2/kWh in Iran in 2025.

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

Open this comparison in the interactive tool to add more countries or change the metric.

Key Facts

  • Gas supplied 73.3% of Iran's electricity in 2025, against 32.7% in Japan.
  • Carbon intensity rose 4% in Iran between 2020 and 2025, while it fell 10% in Japan.
  • Low carbon sources supplied 5.2% of Iran's electricity in 2025 and 33.1% of Japan's.
  • Electricity demand in 2025 was 397 TWh in Iran and 1,027 TWh in Japan.

Key Figures, 2025

Ember annual statistics
Measure Iran Japan
Total generation399 TWh1,027 TWh
Electricity demand397 TWh1,027 TWh
Demand per person4.28 MWh8.37 MWh
Carbon intensity656 gCO2/kWh474 gCO2/kWh
Power sector emissions262 MtCO2487 MtCO2
Low carbon share5.2%33.1%
Largest sourceGas 73.3%Gas 32.7%

Generation Mix, 2025

Share of generation
Source Iran Japan
Gas 73.3% 32.7%
Coal 0.2% 31.8%
Other fossil 21.3% 2.4%
Solar 0.6% 10.8%
Nuclear 1.4% 9.2%
Hydro 3.0% 7.2%
Bioenergy 0.0% 4.6%
Wind 0.3% 1.3%

Carbon Intensity, 1985 to 2025

Ember annual statistics
Carbon intensity of electricity in Iran and Japan, 1985 to 2025 Carbon intensity of electricity generated in Iran and Japan each year from 1985 to 2025, in gCO2/kWh. In 2025 it was 656 gCO2/kWh in Iran and 474 gCO2/kWh in Japan. 0 200 400 600 800 198519901995200020052010201520202025
Carbon intensity of electricity generated in Iran and Japan each year from 1985 to 2025, in gCO2/kWh. In 2025 it was 656 gCO2/kWh in Iran and 474 gCO2/kWh in Japan.
Annual statistics through 2025, gCO2/kWh
Carbon intensity of electricity in Iran and Japan, 1985 to 2025
YearIranJapan
1985577 gCO2/kWh421 gCO2/kWh
1986568 gCO2/kWh417 gCO2/kWh
1987561 gCO2/kWh417 gCO2/kWh
1988565 gCO2/kWh427 gCO2/kWh
1989597 gCO2/kWh429 gCO2/kWh
1990599 gCO2/kWh447 gCO2/kWh
1991625 gCO2/kWh438 gCO2/kWh
1992595 gCO2/kWh445 gCO2/kWh
1993592 gCO2/kWh419 gCO2/kWh
1994629 gCO2/kWh444 gCO2/kWh
1995619 gCO2/kWh424 gCO2/kWh
1996619 gCO2/kWh423 gCO2/kWh
1997645 gCO2/kWh408 gCO2/kWh
1998641 gCO2/kWh404 gCO2/kWh
1999659 gCO2/kWh419 gCO2/kWh
2000667 gCO2/kWh424 gCO2/kWh
2001668 gCO2/kWh424 gCO2/kWh
2002652 gCO2/kWh434 gCO2/kWh
2003649 gCO2/kWh476 gCO2/kWh
2004642 gCO2/kWh450 gCO2/kWh
2005636 gCO2/kWh462 gCO2/kWh
2006625 gCO2/kWh447 gCO2/kWh
2007631 gCO2/kWh470 gCO2/kWh
2008662 gCO2/kWh485 gCO2/kWh
2009667 gCO2/kWh460 gCO2/kWh
2010661 gCO2/kWh447 gCO2/kWh
2011654 gCO2/kWh505 gCO2/kWh
2012648 gCO2/kWh595 gCO2/kWh
2013634 gCO2/kWh596 gCO2/kWh
2014644 gCO2/kWh592 gCO2/kWh
2015651 gCO2/kWh578 gCO2/kWh
2016642 gCO2/kWh567 gCO2/kWh
2017642 gCO2/kWh558 gCO2/kWh
2018658 gCO2/kWh542 gCO2/kWh
2019605 gCO2/kWh529 gCO2/kWh
2020630 gCO2/kWh528 gCO2/kWh
2021658 gCO2/kWh515 gCO2/kWh
2022651 gCO2/kWh520 gCO2/kWh
2023638 gCO2/kWh493 gCO2/kWh
2024643 gCO2/kWh484 gCO2/kWh
2025656 gCO2/kWh474 gCO2/kWh

Demand per Person, 1985 to 2025

Ember annual statistics
Electricity demand per person in Iran and Japan, 1985 to 2025 Electricity demand per person in Iran and Japan each year from 1985 to 2025, in MWh. In 2025 it was 4.28 MWh in Iran and 8.37 MWh in Japan. 0.0 2.5 5.0 7.5 10.0 198519901995200020052010201520202025
Electricity demand per person in Iran and Japan each year from 1985 to 2025, in MWh. In 2025 it was 4.28 MWh in Iran and 8.37 MWh in Japan.
Annual statistics through 2025, MWh
Electricity demand per person in Iran and Japan, 1985 to 2025
YearIranJapan
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
20001.79 MWh8.66 MWh
20011.89 MWh8.51 MWh
20022.04 MWh8.65 MWh
20032.21 MWh8.56 MWh
20042.32 MWh8.77 MWh
20052.46 MWh9.01 MWh
20062.63 MWh9.10 MWh
20072.71 MWh9.21 MWh
20082.76 MWh9.24 MWh
20092.85 MWh8.69 MWh
20103.00 MWh9.02 MWh
20112.94 MWh8.62 MWh
20123.04 MWh8.65 MWh
20133.12 MWh8.52 MWh
20143.31 MWh8.34 MWh
20153.36 MWh8.09 MWh
20163.39 MWh8.37 MWh
20173.54 MWh8.48 MWh
20183.58 MWh8.53 MWh
20193.58 MWh8.27 MWh
20203.77 MWh8.01 MWh
20213.95 MWh8.23 MWh
20224.03 MWh8.33 MWh
20234.14 MWh8.10 MWh
20244.30 MWh8.21 MWh
20254.28 MWh8.37 MWh

Iran history · Japan history

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

  • Iran electricity: generation mix, demand and emissions for Iran, with monthly figures where Ember has them.
  • Japan electricity: generation mix, demand and emissions for Japan, with monthly figures where Ember has them.
  • Iran vs Pakistan: gas 73% of generation in Iran against 23% in Pakistan, 2025.
  • Azerbaijan vs Iran: other fossil 21% of generation in Iran against 0% in Azerbaijan, 2025.
  • Armenia vs Iran: gas 73% of generation in Iran against 39% in Armenia, 2025.
  • China vs Iran: gas 73% of generation in Iran against 3% in China, 2025.
  • Iran vs United States: gas 73% of generation in Iran against 40% in the United States, 2025.
  • India vs Iran: gas 73% of generation in Iran against 2% in India, 2025.
  • Brazil vs Iran: gas 73% of generation in Iran against 8% in Brazil, 2025.
  • Canada vs Iran: gas 73% of generation in Iran against 20% in Canada, 2025.
  • Iran and Japan in the compare tool: the same two countries with the interactive builder, where you can add up to two more.
  • 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.
Cite this page
APA 7

World Power Monitor. (2025). Iran vs Japan: Electricity Compared. https://worldpowermonitor.com/compare/iran-vs-japan/

Plain text

World Power Monitor. Iran vs Japan: Electricity Compared. Data as of 2025. Data from Ember. https://worldpowermonitor.com/compare/iran-vs-japan/

BibTeX 
@misc{wpm_compare_iran_vs_japan_2025,
  title = {{Iran vs Japan: Electricity Compared}},
  author = {{World Power Monitor}},
  year = {2025},
  note = {Data as of 2025. Data from Ember.},
  url = {https://worldpowermonitor.com/compare/iran-vs-japan/}
}

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