Solar energy in Akita, Japan
Average irradiation 3.29 kWh/m²/day · ~961 kWh per kWp per year
Monthly solar irradiation & temperature in Akita (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.43 | 1.2 | 35 |
| Feb | 2.17 | 1.3 | 53 |
| Mar | 3.22 | 4.0 | 78 |
| Apr | 4.27 | 8.7 | 104 |
| May | 4.91 | 14.2 | 119 |
| Jun | 5.01 | 18.9 | 122 |
| Jul | 4.37 | 22.7 | 106 |
| Aug | 4.45 | 24.6 | 108 |
| Sep | 3.76 | 21.1 | 91 |
| Oct | 2.79 | 15.3 | 68 |
| Nov | 1.79 | 9.5 | 44 |
| Dec | 1.27 | 3.8 | 31 |
Solar potential of Akita explained
Akita receives an average of 3.29 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 961 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. While winters are dark, modern panel prices mean solar can still be economical — self-consumption value matters more than raw sunshine here.
Frequently asked questions
Is solar worth it in Akita?
With 3.29 kWh/m²/day of average irradiation, a 1 kWp system in Akita produces roughly 961 kWh per year. That is a moderate solar resource; economics depend more on local electricity prices and incentives, which our AI planner can research for you.
How much electricity would a 5 kW system produce in Akita?
Approximately 5,000 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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