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Built 2026-09-20 (20 September 2026)

Electricity in September 2025: Demand Up 2.5% on September 2024

Demand in the 84 countries with data for both September 2025 and September 2024 was 2,326 TWh in September 2025, up 2.5% on September 2024. Those 84 countries cover 91% of world electricity demand (measured on 2025 demand), so this is a review of the reporting countries, not a world total. Low carbon sources supplied 45.4% of their generation in September 2025.

September 2025 at a Glance

84 countries, Ember monthly
Demand, 84 countries2,326 TWhup 2.5% on September 2024
Low carbon share45.4%up 3.0 points on September 2024
Solar and wind share18.5%
Share of world demand91%84 countries, 2025 basis

Key Facts

  • Demand in the 84 countries with data for both September 2025 and September 2024 was 2,326 TWh in September 2025, up 2.5% on September 2024.
  • Those 84 countries cover 91% of world electricity demand (measured on 2025 demand), so this is a review of the reporting countries, not a world total.
  • Low carbon sources (nuclear and renewables) supplied 45.4% of generation in these countries in September 2025, up 3.0 points on September 2024.
  • Solar supplied 10.3% and wind 8.2% of their generation in September 2025.
  • Their generation weighted carbon intensity was 453 gCO2/kWh in September 2025, against 478 gCO2/kWh in September 2024.
  • Among large reporters, France had the lowest carbon intensity in September 2025 (22 gCO2/kWh) and Kazakhstan the highest (800 gCO2/kWh).

Demand Through 2025 Against 2024

same 84 countries, TWh per month
Monthly electricity demand of the 84 reporting countries, 2024 and 2025 Demand in the 84 countries with data for September 2025 and September 2024: 2,326 TWh in September 2025 against 2,269 TWh in September 2024. A month shows only when every one of these countries has a figure for it. 0 750 1,500 2,250 3,000 JanFebMarAprMayJunJulAugSepOctNovDec
Demand in the 84 countries with data for September 2025 and September 2024: 2,326 TWh in September 2025 against 2,269 TWh in September 2024. A month shows only when every one of these countries has a figure for it.
Ember monthly statistics through September 2025
Monthly electricity demand of the 84 reporting countries, 2024 and 2025
Month20252024
Jan2,388 TWh2,312 TWh
Feb2,151 TWh2,134 TWh
Mar2,287 TWh2,206 TWh
Apr2,135 TWh2,076 TWh
May2,213 TWh2,182 TWh
Jun2,336 TWh2,266 TWh
Jul2,602 TWh2,500 TWh
Aug2,556 TWh2,501 TWh
Sep2,326 TWh2,269 TWh
Octn/a2,180 TWh
Novn/a2,169 TWh
Decn/a2,375 TWh

Biggest Movers, September 2025 Against September 2024

countries generating at least 3 TWh in both months

Demand rose most

Countries where demand rose most, September 2025
CountryChangeDemand
1. Denmark+17.5%2.86 TWh to 3.36 TWh
2. Ecuador+14.6%2.81 TWh to 3.22 TWh
3. Pakistan+10.0%14.4 TWh to 15.8 TWh
4. Bangladesh+9.5%9.23 TWh to 10.1 TWh
5. Morocco+8.1%3.70 TWh to 4.00 TWh

Demand fell most

Countries where demand fell most, September 2025
CountryChangeDemand
1. South Africa-7.3%19.3 TWh to 17.9 TWh
2. Philippines-4.9%10.2 TWh to 9.72 TWh
3. Vietnam-3.4%26.7 TWh to 25.8 TWh
4. Greece-3.0%4.01 TWh to 3.89 TWh
5. Brazil-2.9%62.4 TWh to 60.5 TWh

Solar share rose most

Countries where the solar share rose most, September 2025
CountryChangeShare of generation
1. Pakistan+7.1 points14.0% to 21.1% of generation
2. Romania+5.2 points10.0% to 15.1% of generation
3. Italy+4.9 points15.1% to 20.1% of generation
4. Austria+4.7 points12.6% to 17.3% of generation
5. Spain+4.0 points24.9% to 28.9% of generation

Wind share rose most

Countries where the wind share rose most, September 2025
CountryChangeShare of generation
1. United Kingdom+10.1 points27.8% to 37.9% of generation
2. Greece+6.9 points14.6% to 21.6% of generation
3. Belgium+5.8 points18.2% to 24.1% of generation
4. Turkey+5.4 points7.5% to 12.8% of generation
5. Netherlands+5.4 points25.4% to 30.7% of generation

Carbon intensity fell most

Countries where carbon intensity fell most, September 2025
CountryChangeCarbon intensity
1. Colombia-51.1%263 gCO2/kWh to 129 gCO2/kWh
2. Argentina-21.1%349 gCO2/kWh to 275 gCO2/kWh
3. Belarus-19.6%372 gCO2/kWh to 299 gCO2/kWh
4. Belgium-18.0%154 gCO2/kWh to 126 gCO2/kWh
5. France-16.9%26 gCO2/kWh to 22 gCO2/kWh

Carbon intensity rose most

Countries where carbon intensity rose most, September 2025
CountryChangeCarbon intensity
1. Chile+23.1%212 gCO2/kWh to 261 gCO2/kWh
2. Austria+10.9%50 gCO2/kWh to 55 gCO2/kWh
3. Canada+10.2%191 gCO2/kWh to 210 gCO2/kWh
4. South Korea+10.0%410 gCO2/kWh to 451 gCO2/kWh
5. Switzerland+9.2%49 gCO2/kWh to 54 gCO2/kWh

Cleanest and Dirtiest Grids, September 2025

large reporters, gCO2/kWh

Lowest carbon intensity

Lowest carbon intensity among large reporters, September 2025
CountryCarbon intensityGeneration
1. France22 gCO2/kWh39.4 TWh generated
2. Sweden22 gCO2/kWh11.2 TWh generated
3. Norway29 gCO2/kWh11.3 TWh generated
4. Finland54 gCO2/kWh5.64 TWh generated
5. Switzerland54 gCO2/kWh5.72 TWh generated
6. Austria55 gCO2/kWh4.96 TWh generated
7. New Zealand87 gCO2/kWh3.48 TWh generated
8. Brazil114 gCO2/kWh60.5 TWh generated

Highest carbon intensity

Highest carbon intensity among large reporters, September 2025
CountryCarbon intensityGeneration
1. Kazakhstan800 gCO2/kWh8.84 TWh generated
2. Bangladesh751 gCO2/kWh8.66 TWh generated
3. South Africa707 gCO2/kWh18.8 TWh generated
4. Taiwan672 gCO2/kWh26.4 TWh generated
5. Kuwait650 gCO2/kWh8.93 TWh generated
6. Malaysia635 gCO2/kWh15.3 TWh generated
7. Poland620 gCO2/kWh12.1 TWh generated
8. Philippines607 gCO2/kWh9.72 TWh generated

Largest Reporters by Demand, September 2025

Largest reporters by demand, September 2025
CountryDemandOn September 2024
1. China890 TWh+4.6%
2. United States377 TWh+2.3%
3. India159 TWh+5.2%
4. Russia86.1 TWh+0.6%
5. Japan80.0 TWh-0.8%
6. Brazil60.5 TWh-2.9%
7. South Korea50.3 TWh-0.1%
8. Canada43.8 TWh+0.4%

How This Month Is Measured

  • Coverage. 84 countries reported September 2025. 84 of them also have September 2024, and those 84 are the like for like set behind every figure above. Together they made up 91% of world demand in 2025. A month is published only when at least 10 countries and 60% of world demand are covered.
  • Not a world total. These sums cover the reporting countries only.
  • Carbon intensity. The figure for the group weights each country's monthly intensity by its generation; country rankings use Ember's own monthly intensity.

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