Power StationsWORLDWIDETHE GLOBAL EDITION 01
Map of 3 power plants in Saint Helena, Ascension and Tristan da Cunha, coloured by fuel and sized by capacity
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Power plants in Saint Helena, Ascension and Tristan da Cunha

3 power-plant records · 9 MW reported capacity

  • Oil 67%
  • Wind 33%
Explore Saint Helena, Ascension and Tristan da Cunha on the map

Saint Helena, Ascension and Tristan da Cunha at a glance

Power-plant records
3
Reported capacity
9 MW
Renewable electricity (2024)
No data
Most records
Oil, Wind
Capital
Jamestown

Largest listed power plants

  1. 1Rupert's Power Station8 MW
  2. 2Deadwood Plain Wind Farm1 MW
  3. 3Ascension Island Power StationOil
Full list of power plants in Saint Helena, Ascension and Tristan da Cunha ↓

Records by technology

Counts records, not generation share · coverage & dates

Reported capacity is the rated size of the listed installations, not electricity being produced now. Source dates and coverage differ, so newer facilities may be absent and historical records may remain.

How electricity works in Saint Helena, Ascension and Tristan da Cunha

Island systemSmall isolated grid

Diesel, wind and solar on St Helena; Ascension and Tristan da Cunha have their own generators.

  1. GenerationLocal power station
  2. TransmissionIsland grid
  3. DistributionIsland utility
  4. CustomersSet tariffs

Who regulates

Electricity rules follow the United Kingdom, with local oversight by the territory’s government.

Who controls the grid

Connect Saint Helena runs power and water.

Markets & power exchanges

No power exchange: the utility produces or buys electricity and sells it at set tariffs.

Regional grid

Not part of a larger synchronous grid or regional power pool.

What does “Island system” mean?

A small grid that is not connected to a larger network. One utility typically runs generation and distribution, often relying on imported fuel, with solar and batteries increasingly added.

Saint Helena, Ascension and Tristan da Cunha is a statistical territory containing separate island systems. Connect’s entry applies to Saint Helena only.

References reviewed 2026-09-29. Logos are each organisation’s own site icon, shown to identify it. Selected organisations, not an exhaustive list of licence holders.

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ELECTRICITY IN 2024

How Saint Helena, Ascension and Tristan da Cunha generates electricity

No comparable 2024 electricity figures are available in this snapshot. This is a data gap, not zero generation.

Source: Ember (2026), processed by Our World in Data · CC BY 4.0 · Snapshot 24 April 2026. Method & download details.

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Geography and data notes

Saint Helena, Ascension and Tristan da Cunha is in Western Africa. Its coastal or island geography provides a different setting for electricity infrastructure from inland systems. This profile connects country reference information with the historical station inventory and reported electricity generation.

Capital
Jamestown
Languages
English
Region
Western Africa

Geographic reference: Countries geographic database (ODbL). Boundaries and names are for orientation; language listings are introductory, not exhaustive. Banner map: Natural Earth boundaries (public domain) with this atlas’s station records.

The source inventory contains 3 records for Saint Helena, Ascension and Tristan da Cunha. Select a fuel in the map to explore where its stations are located, then open a record to inspect reported capacity and provenance.

Inventory coverage

3 source records. 0 reported operational in their source snapshot; this is not live status.

1 lack an owner/operator; 2 lack a commissioning year.

Coverage, dates & exclusions
THE GENERATION INVENTORY

List of power plants in Saint Helena, Ascension and Tristan da Cunha

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Browse 3 source records, ordered by reported capacity. Ownership and operating status describe the source snapshot; they may have changed. Missing information is shown explicitly.

3 matching records · showing 3

MW measures rated capacity, not electricity generated. Records may describe units, installations, projects or whole complexes. Review inventory coverage and licenses. Download this country’s records.