Solar energy in Milan, Italy
Average irradiation 3.78 kWh/m²/day · ~1104 kWh per kWp per year
Monthly solar irradiation & temperature in Milan (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.48 | 2.7 | 36 |
| Feb | 2.27 | 4.4 | 55 |
| Mar | 3.54 | 8.6 | 86 |
| Apr | 4.56 | 12.8 | 111 |
| May | 5.57 | 17.2 | 135 |
| Jun | 6.43 | 21.7 | 156 |
| Jul | 6.57 | 24.1 | 160 |
| Aug | 5.55 | 23.7 | 135 |
| Sep | 4.15 | 19.1 | 101 |
| Oct | 2.50 | 13.9 | 61 |
| Nov | 1.47 | 8.3 | 36 |
| Dec | 1.21 | 3.6 | 29 |
Solar potential of Milan explained
Milan receives an average of 3.78 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 1104 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 Milan?
With 3.78 kWh/m²/day of average irradiation, a 1 kWp system in Milan produces roughly 1104 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 Milan?
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
London (2.6) · Paris (3.2) · Berlin (2.9) · Munich (3.3) · Madrid (4.8) · Barcelona (4.6) · all cities →