Tonga
power plants.
Tonga has 2 operating power plants in the catalog, 6 MW in all. Its operating fleet leans on solar, which accounts for 77% of operating capacity (5 MW), with wind a distant second at 23%. The largest operating plant in the catalog is Tongatapu Solar Project (5 MW, recorded start year 2022).
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Tonga electricity mix
Operating installed capacity by fuel. Each row gives megawatts and its share of the operating total.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Largest plants in Tonga
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Newest plants in Tonga
Operating plants with the most recent recorded start years. The catalog records years, not full commissioning dates.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Frequently asked questions
Where does Tonga get its electricity?
Across the 2 operating plants in the catalog, Tonga's capacity is led by solar at 77% (5 MW), then wind at 23%. These are installed-capacity shares, not live generation.
What is the largest power plant in Tonga?
The largest operating plant in the catalog for Tonga is Tongatapu Solar Project, a solar facility with 5 MW of capacity and a recorded start year of 2022.
How many power plants does Tonga have?
The catalog tracks 2 operating power plants in Tonga, with 6 MW in all.
Can I see Tonga's power grid on a map?
Yes. Open nrgmap at app.nrgmap.com and search Tonga to fly to it. Every tracked plant is a marker sized by capacity and coloured by fuel, with the national fuel mix in the side panel.