Solar energy in Marseille, France
Average irradiation 4.43 kWh/m²/day · ~1294 kWh per kWp per year
Monthly solar irradiation & temperature in Marseille (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.81 | 5.3 | 44 |
| Feb | 2.78 | 5.7 | 68 |
| Mar | 4.11 | 8.9 | 100 |
| Apr | 5.37 | 12.4 | 131 |
| May | 6.43 | 16.6 | 156 |
| Jun | 7.40 | 21.8 | 180 |
| Jul | 7.41 | 24.6 | 180 |
| Aug | 6.38 | 24.1 | 155 |
| Sep | 4.83 | 19.5 | 117 |
| Oct | 3.12 | 15.1 | 76 |
| Nov | 2.00 | 9.8 | 49 |
| Dec | 1.57 | 6.1 | 38 |
Solar potential of Marseille explained
Marseille receives an average of 4.43 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 1294 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 Marseille?
With 4.43 kWh/m²/day of average irradiation, a 1 kWp system in Marseille produces roughly 1294 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 Marseille?
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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