Installed solar energy capacity in Tonga
Tonga: Installed solar energy capacity was 0.0155 gigawatts in 2024. ◆ Volatile
Installed solar energy capacity in Tonga, 2000–2024
Source: IRENA (2025) – processed by Our World in Data. Measured in gigawatts.
Analysis
In 2024, installed solar energy capacity in Tonga stood at 0.0155 gigawatts. That is the highest value across all 25 years on record.
That represents a change of up 2.9% on the previous year and up 472.3% over ten years.
Over the whole period, installed solar energy capacity in Tonga peaked at 0.0155 gigawatts in 2024 and was at its lowest, 0.0001 gigawatts, in 2000.
Tonga ranks 163rd of 218 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 0.0001 gigawatts | 0.0001 gigawatts | 0.0001 gigawatts | 10 |
| 2010s | 0.0037 gigawatts | 0.0001 gigawatts | 0.007 gigawatts | 10 |
| 2020s | 0.0118 gigawatts | 0.007 gigawatts | 0.0155 gigawatts | 5 |
Countries ranked near Tonga
More energy & mining data for Tonga
- Fuel imports 16.4% (2023)
- Ores and metals imports 0.6% (2023)
- Ores and metals exports 1.0% (2023)
- Gas production 0 terawatt-hours (2024)
- Fossil fuel production per person, by fuel 0 kilowatt-hours per person (2024)
- Fossil fuel production by fuel 0 terawatt-hours (2024)
- Gas production per person 0 kilowatt-hours per person (2024)
- Fuel exports 0.0% (2023)
- Share of dietary energy supply from carbohydrates vs. GDP per capita 46.6% (2023)
- Share of dietary energy derived from protein vs. GDP per capita 16.9% (2023)
Frequently asked questions
- What is installed solar energy capacity in Tonga?
- Installed solar energy capacity in Tonga was 0.0155 gigawatts in 2024, according to IRENA (2025) – processed by Our World in Data.
- What is the highest installed solar energy capacity recorded in Tonga?
- The highest recorded value was 0.0155 gigawatts in 2024.
- What is the lowest installed solar energy capacity recorded in Tonga?
- The lowest recorded value was 0.0001 gigawatts in 2000.
- How does Tonga rank for installed solar energy capacity?
- Tonga ranks 163rd out of 218 countries with data for 2024.
- Is installed solar energy capacity rising or falling in Tonga?
- Over the last ten years it is up 472.3%. The long-run trend across the full record is volatile.
- Where does this Tonga data come from?
- The figures come from IRENA (2025) – processed by Our World in Data, published as part of Installed solar energy capacity. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 25 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Total solar (on- and off-grid) electricity installed capacity, measured in gigawatts. This includes solar photovoltaic and concentrated solar power.