Solar energy in Morioka, Japan
Average irradiation 3.5 kWh/m²/day · ~1022 kWh per kWp per year
Monthly solar irradiation & temperature in Morioka (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.99 | -5.1 | 48 |
| Feb | 2.70 | -4.8 | 66 |
| Mar | 3.63 | -0.5 | 88 |
| Apr | 4.60 | 5.7 | 112 |
| May | 5.03 | 12.1 | 122 |
| Jun | 4.98 | 16.6 | 121 |
| Jul | 4.36 | 20.5 | 106 |
| Aug | 4.34 | 21.6 | 105 |
| Sep | 3.66 | 17.4 | 89 |
| Oct | 2.91 | 10.6 | 71 |
| Nov | 2.13 | 4.2 | 52 |
| Dec | 1.66 | -1.9 | 40 |
Solar potential of Morioka explained
Morioka receives an average of 3.5 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 1022 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This is a solid mid-range solar resource: production is meaningful year-round, though winter output drops noticeably.
Frequently asked questions
Is solar worth it in Morioka?
With 3.5 kWh/m²/day of average irradiation, a 1 kWp system in Morioka produces roughly 1022 kWh per year. That is a good solar resource; with current panel prices most systems pay back well within their lifetime.
How much electricity would a 5 kW system produce in Morioka?
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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