Solar energy in Brno, Czech Republic
Average irradiation 3.11 kWh/m²/day · ~908 kWh per kWp per year
Monthly solar irradiation & temperature in Brno (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 0.87 | -2.6 | 21 |
| Feb | 1.66 | -0.6 | 40 |
| Mar | 2.85 | 3.9 | 69 |
| Apr | 4.31 | 9.8 | 105 |
| May | 5.08 | 14.7 | 124 |
| Jun | 5.48 | 19.2 | 133 |
| Jul | 5.35 | 21.4 | 130 |
| Aug | 4.70 | 20.9 | 114 |
| Sep | 3.35 | 15.4 | 82 |
| Oct | 1.96 | 9.3 | 48 |
| Nov | 0.96 | 4.3 | 23 |
| Dec | 0.68 | -1.1 | 17 |
Solar potential of Brno explained
Brno receives an average of 3.11 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 908 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. While winters are dark, modern panel prices mean solar can still be economical — self-consumption value matters more than raw sunshine here.
Frequently asked questions
Is solar worth it in Brno?
With 3.11 kWh/m²/day of average irradiation, a 1 kWp system in Brno produces roughly 908 kWh per year. That is a moderate solar resource; economics depend more on local electricity prices and incentives, which our AI planner can research for you.
How much electricity would a 5 kW system produce in Brno?
Approximately 5,000 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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