Tonga has 5 power plants in this atlas, with capacity not reported. By number of records the most common technologies are solar and wind. Grid operators listed here include Tonga Power. Renewables supplied 14.3% of its electricity in 2024.
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.
Grid operators and electricity market in Tonga
Island systemSmall isolated grid
Diesel generation supplies most power, with solar and batteries being added under national renewable targets.
GenerationLocal power station
TransmissionIsland grid
DistributionIsland utility
CustomersSet tariffs
Who regulates
No separate independent regulator is listed: the government or the utility itself sets tariffs and technical rules.
Who controls the grid
Tonga Power Limited, owned by the state, runs the island grids.
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.
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.
Tonga is in Polynesia. 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
Nuku'alofa
Languages
English, Tongan
Region
Polynesia
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 5 records for Tonga. 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
5 source records. 0 reported operational in their source snapshot; this is not live status.
Browse 5 source records, ordered by reported capacity. Ownership and operating status describe the source snapshot; they may have changed. Missing information is shown explicitly.
