Solar energy in Florence, Italy
Average irradiation 4.02 kWh/m²/day · ~1174 kWh per kWp per year
Monthly solar irradiation & temperature in Florence (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.56 | 2.2 | 38 |
| Feb | 2.36 | 2.9 | 57 |
| Mar | 3.52 | 6.3 | 85 |
| Apr | 4.79 | 10.2 | 116 |
| May | 5.88 | 14.5 | 143 |
| Jun | 6.83 | 19.7 | 166 |
| Jul | 7.05 | 22.8 | 171 |
| Aug | 6.06 | 22.4 | 147 |
| Sep | 4.37 | 17.3 | 106 |
| Oct | 2.84 | 12.6 | 69 |
| Nov | 1.68 | 7.6 | 41 |
| Dec | 1.34 | 3.4 | 32 |
Solar potential of Florence explained
Florence receives an average of 4.02 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 1174 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 Florence?
With 4.02 kWh/m²/day of average irradiation, a 1 kWp system in Florence produces roughly 1174 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 Florence?
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%.
Compare with nearby cities
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