Global GridRéunion's energy mix and electricity
🇷🇪 In 2023, Réunion generated 3.07 TWh of electricity. The largest source was bioenergy at 34%, followed by oil and other fossil fuels (30%) and coal (13%). In total, 57% came from low-carbon sources (nuclear and renewables) and 43% from fossil fuels.
On average, each kilowatt hour produced about 394 grams of carbon dioxide (CO₂), below the world average of 458 grams in 2025. That makes Réunion the 77th cleanest of 158 countries that generate at least 1 TWh a year.
Electricity demand was 3.07 TWh. Its electricity imports and exports were roughly in balance.
Since 2000, electricity generation has grown by 74%, from 1.76 TWh. The low-carbon share went from 47% to 57%. The biggest rise was in bioenergy, from 15% to 34% of generation. The biggest fall was in coal, from 35% to 13%. Carbon intensity fell from 483 to 394 grams per kWh.
Live, hour-by-hour figures for Réunion are not connected yet. The dashboard shows its yearly figures, energy mix since 2000 and interconnector trade.
Energy mix in 2023
- Bioenergy 34%
- Oil and other fossil fuels 30%
- Coal 13%
- Hydro 13%
- Solar 9.4%
- Wind 0.7%
| Source | Share | Generated |
|---|---|---|
| Bioenergy | 34% | 1.04 TWh |
| Oil and other fossil fuels | 30% | 0.93 TWh |
| Coal | 13% | 0.40 TWh |
| Hydro | 13% | 0.39 TWh |
| Solar | 9.4% | 0.29 TWh |
| Wind | 0.7% | 0.02 TWh |
Energy security score
Strong. Réunion ranks 20th of 158 countries. The score shows how well a country could keep electricity affordable and on if fuel supplies were disrupted. It is based on 4 of the 5 measures.
| Measure | Score |
|---|---|
| Produces its own energy No reliable figure exists for Réunion, so this measure is left out and the other four count for more. | n/a |
| Variety of power sources How evenly generation is spread across nine sources. The largest, bioenergy, made 34%. | 85 |
| Little reliance on imported power Réunion exported more electricity than it imported, so it scores full marks. | 100 |
| Low-carbon power Nuclear and renewables made 57% of generation. | 57 |
| Low gas and oil use Gas and oil made 30% of generation; the score is 100 minus that share. | 70 |
The five measures are weighted 30%, 20%, 20%, 15% and 15%. How the score works.
How it has changed
| Year | Generated | Low-carbon | Fossil | CO₂ g/kWh |
|---|---|---|---|---|
| 2000 | 1.76 TWh | 47% | 54% | 483 |
| 2005 | 2.27 TWh | 35% | 66% | 568 |
| 2010 | 2.70 TWh | 34% | 66% | 585 |
| 2015 | 2.90 TWh | 36% | 63% | 552 |
| 2020 | 3.79 TWh | 24% | 75% | 644 |
| 2022 | 3.06 TWh | 38% | 63% | 484 |
| 2023 | 3.07 TWh | 57% | 43% | 394 |
Questions about Réunion's energy
What is Réunion's energy mix?
In 2023, Réunion's electricity came from bioenergy 34%, oil and other fossil fuels 30%, coal 13% and hydro 13%.
How much of Réunion's electricity is renewable?
57% of its electricity came from renewables in 2023 (bioenergy 34%, hydro 13%, solar 9.4% and wind 0.7%).
What is Réunion's main source of electricity?
Bioenergy, which made 34% of its electricity in 2023.
How clean is Réunion's electricity?
About 394 grams of CO₂ for each kilowatt hour in 2023, below the world average of 458 grams. It ranks 77th cleanest of 158 countries that generate at least 1 TWh a year.
Does Réunion import electricity?
Its imports and exports were roughly in balance in 2023.
How secure is Réunion's energy supply?
Global Grid's energy security score for Réunion is 80 out of 100 (strong), 20th of 158 countries. It looks at how much of its own energy it produces, how varied its power sources are, its reliance on imported power and its use of low-carbon power, gas and oil.
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Sources: Ember yearly electricity data (CC BY 4.0), figures up to 2023. Ember's latest-year figures are first estimates and may be revised. TWh: terawatt hours (one billion kWh).