Solar energy in Athens, Greece
Average irradiation 4.83 kWh/m²/day · ~1410 kWh per kWp per year
Monthly solar irradiation & temperature in Athens (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.21 | 9.2 | 54 |
| Feb | 3.00 | 9.7 | 73 |
| Mar | 4.36 | 11.8 | 106 |
| Apr | 5.71 | 14.8 | 139 |
| May | 6.77 | 19.9 | 165 |
| Jun | 7.66 | 24.9 | 186 |
| Jul | 7.76 | 27.5 | 189 |
| Aug | 6.95 | 27.4 | 169 |
| Sep | 5.36 | 23.7 | 130 |
| Oct | 3.72 | 19.1 | 91 |
| Nov | 2.49 | 14.8 | 61 |
| Dec | 1.90 | 10.8 | 46 |
Solar potential of Athens explained
Athens receives an average of 4.83 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 1410 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places Athens among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in Athens?
With 4.83 kWh/m²/day of average irradiation, a 1 kWp system in Athens produces roughly 1410 kWh per year. That is an excellent solar resource — payback periods are typically among the shortest worldwide.
How much electricity would a 5 kW system produce in Athens?
Approximately 7,000 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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