Solar energy in Toulouse, France
Average irradiation 3.85 kWh/m²/day · ~1124 kWh per kWp per year
Monthly solar irradiation & temperature in Toulouse (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.48 | 5.3 | 36 |
| Feb | 2.45 | 5.6 | 60 |
| Mar | 3.70 | 8.8 | 90 |
| Apr | 4.78 | 11.9 | 116 |
| May | 5.49 | 15.5 | 133 |
| Jun | 6.23 | 20.3 | 151 |
| Jul | 6.18 | 23.0 | 150 |
| Aug | 5.51 | 22.9 | 134 |
| Sep | 4.39 | 19.2 | 107 |
| Oct | 2.91 | 15.1 | 71 |
| Nov | 1.76 | 9.1 | 43 |
| Dec | 1.35 | 5.9 | 33 |
Solar potential of Toulouse explained
Toulouse receives an average of 3.85 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 1124 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 Toulouse?
With 3.85 kWh/m²/day of average irradiation, a 1 kWp system in Toulouse produces roughly 1124 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 Toulouse?
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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