Solar energy in Kastamonu, Türkiye
Average irradiation 4.13 kWh/m²/day · ~1206 kWh per kWp per year
Monthly solar irradiation & temperature in Kastamonu (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.70 | -2.1 | 41 |
| Feb | 2.49 | -0.3 | 61 |
| Mar | 3.56 | 3.1 | 87 |
| Apr | 4.84 | 7.6 | 118 |
| May | 5.77 | 12.8 | 140 |
| Jun | 6.64 | 16.7 | 162 |
| Jul | 6.95 | 19.6 | 169 |
| Aug | 6.24 | 20.0 | 152 |
| Sep | 4.63 | 16.1 | 113 |
| Oct | 3.10 | 10.9 | 75 |
| Nov | 2.13 | 5.0 | 52 |
| Dec | 1.49 | -0.3 | 36 |
Solar potential of Kastamonu explained
Kastamonu receives an average of 4.13 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 1206 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 Kastamonu?
With 4.13 kWh/m²/day of average irradiation, a 1 kWp system in Kastamonu produces roughly 1206 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 Kastamonu?
Approximately 6,000 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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