Global GridSaint Helena's energy mix and electricity
🇸🇭 In 2023, Saint Helena generated 0.01 TWh of electricity. Almost all of it, 100%, came from oil and other fossil fuels. In total, 0% came from low-carbon sources (nuclear and renewables) and 100% from fossil fuels.
On average, each kilowatt hour produced about 1,000 grams of carbon dioxide (CO₂), far above the world average of 458 grams in 2025.
Electricity demand was 0.01 TWh. Its electricity imports and exports were roughly in balance.
Since 2000, electricity generation has stayed about the same, from 0.01 TWh. The low-carbon share went from 0% to 0%.
Live, hour-by-hour figures for Saint Helena are not connected yet. The dashboard shows its yearly figures, energy mix since 2000 and interconnector trade.
Energy mix in 2023
- Oil and other fossil fuels 100%
| Source | Share | Generated |
|---|---|---|
| Oil and other fossil fuels | 100% | 0.01 TWh |
Energy security score
Vulnerable. It is not ranked because its power system is very small. 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 Saint Helena, 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, oil and other fossil fuels, made 100%. | 0 |
| Little reliance on imported power Saint Helena exported more electricity than it imported, so it scores full marks. | 100 |
| Low-carbon power Nuclear and renewables made 0% of generation. | 0 |
| Low gas and oil use Gas and oil made 100% of generation; the score is 100 minus that share. | 0 |
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 | 0.01 TWh | 0% | 100% | 1,000 |
| 2005 | 0.01 TWh | 0% | 100% | 1,000 |
| 2010 | 0.01 TWh | 0% | 100% | 1,000 |
| 2015 | 0.01 TWh | 0% | 100% | 1,000 |
| 2020 | 0.01 TWh | 0% | 100% | 1,000 |
| 2022 | 0.01 TWh | 0% | 100% | 1,000 |
| 2023 | 0.01 TWh | 0% | 100% | 1,000 |
Questions about Saint Helena's energy
What is Saint Helena's energy mix?
In 2023, Saint Helena's electricity came from oil and other fossil fuels 100%.
How much of Saint Helena's electricity is renewable?
Almost none of its electricity came from renewables in 2023.
What is Saint Helena's main source of electricity?
Oil and other fossil fuels, which made 100% of its electricity in 2023.
How clean is Saint Helena's electricity?
About 1,000 grams of CO₂ for each kilowatt hour in 2023, far above the world average of 458 grams.
Does Saint Helena import electricity?
Its imports and exports were roughly in balance in 2023.
How secure is Saint Helena's energy supply?
Global Grid's energy security score for Saint Helena is 29 out of 100 (vulnerable). 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.
Other countries in Africa
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).