Solar energy in Rasht, Iran
Average irradiation 3.86 kWh/m²/day · ~1127 kWh per kWp per year
Monthly solar irradiation & temperature in Rasht (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.97 | 8.1 | 48 |
| Feb | 2.52 | 8.0 | 61 |
| Mar | 3.32 | 10.6 | 81 |
| Apr | 4.20 | 13.8 | 102 |
| May | 5.58 | 19.6 | 136 |
| Jun | 6.44 | 23.7 | 157 |
| Jul | 6.03 | 25.7 | 147 |
| Aug | 5.43 | 26.2 | 132 |
| Sep | 4.10 | 23.4 | 100 |
| Oct | 2.91 | 19.4 | 71 |
| Nov | 2.08 | 13.9 | 51 |
| Dec | 1.71 | 10.0 | 42 |
Solar potential of Rasht explained
Rasht receives an average of 3.86 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 1127 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 Rasht?
With 3.86 kWh/m²/day of average irradiation, a 1 kWp system in Rasht produces roughly 1127 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 Rasht?
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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