Solar energy in Sapporo, Japan
Average irradiation 3.25 kWh/m²/day · ~949 kWh per kWp per year
Monthly solar irradiation & temperature in Sapporo (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.19 | -6.9 | 29 |
| Feb | 1.87 | -6.7 | 46 |
| Mar | 3.05 | -2.9 | 74 |
| Apr | 4.44 | 3.5 | 108 |
| May | 5.23 | 10.0 | 127 |
| Jun | 5.19 | 14.9 | 126 |
| Jul | 4.87 | 18.8 | 118 |
| Aug | 4.47 | 19.9 | 109 |
| Sep | 3.74 | 16.0 | 91 |
| Oct | 2.54 | 9.2 | 62 |
| Nov | 1.38 | 2.1 | 33 |
| Dec | 0.98 | -4.6 | 24 |
Solar potential of Sapporo explained
Sapporo receives an average of 3.25 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 949 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 Sapporo?
With 3.25 kWh/m²/day of average irradiation, a 1 kWp system in Sapporo produces roughly 949 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 Sapporo?
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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