Solar energy in Nha Trang, Vietnam
Average irradiation 5.13 kWh/m²/day · ~1498 kWh per kWp per year
Monthly solar irradiation & temperature in Nha Trang (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 4.04 | 24.2 | 98 |
| Feb | 5.11 | 24.5 | 124 |
| Mar | 5.71 | 25.9 | 139 |
| Apr | 6.30 | 27.6 | 153 |
| May | 6.14 | 28.6 | 149 |
| Jun | 5.84 | 28.4 | 142 |
| Jul | 5.71 | 28.0 | 139 |
| Aug | 5.71 | 28.1 | 139 |
| Sep | 5.39 | 28.1 | 131 |
| Oct | 4.44 | 27.3 | 108 |
| Nov | 3.86 | 26.4 | 94 |
| Dec | 3.37 | 25.0 | 82 |
Solar potential of Nha Trang explained
Nha Trang receives an average of 5.13 kilowatt-hours of solar energy per square metre per day, measured over four decades of satellite observation. In practical terms, every kilowatt-peak of installed PV capacity yields about 1498 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Nha Trang among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Nha Trang?
With 5.13 kWh/m²/day of average irradiation, a 1 kWp system in Nha Trang produces roughly 1498 kWh per year. That is an excellent solar resource — payback periods are typically among the shortest worldwide.
How much electricity would a 5 kW system produce in Nha Trang?
Approximately 7,000 kWh per year — enough to cover a large share of a typical household's consumption.
What data is this based on?
Long-term satellite observations from NASA POWER (1981–present) and the PVGIS SARAH3 database, assuming a performance ratio of 80%.
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