PVGIS · SolarMapped
Solar potential in Poland
These figures are the unweighted mean of the city locations listed below, not a national average. Two urban points do not represent an entire country, its roofs or its solar installations.
Explore on the solar map ↗Sampled-city benchmark
PV output is estimated electricity from 1 kWp of installed solar panels. Irradiation is sunlight energy received per square meter on the optimally tilted panel plane; it is not electricity.
For a 5 kWp system, multiply the electricity values by five. This simple scaling does not account for roof-specific shading or equipment constraints.
Range across these cities: 1,053–1,085kWh/kWp/year. Panel tilt and direction are location-specific; see each city.
Monthly solar irradiation and PV output
Highest-output month: July · 130.6kWh/kWp/month. Lowest-output month: December · 33kWh/kWp/month.
The chart and table use the mean of the listed cities for each month.
| Month | Estimated PV output (kWh/kWp/month) | Solar irradiation (kWh/m²/month) |
|---|---|---|
| January | 39.5 | 45.1 |
| February | 54.5 | 62.4 |
| March | 93.7 | 111.4 |
| April | 117.2 | 145.2 |
| May | 125.5 | 159.5 |
| June | 128.8 | 166.7 |
| July | 130.6 | 171 |
| August | 124.2 | 161.9 |
| September | 103.9 | 131.1 |
| October | 77.5 | 94.4 |
| November | 40.5 | 48.4 |
| December | 33 | 38.6 |
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Data and methodology
PVGIS 5.3 (European Commission Joint Research Centre), crystalline silicon, fixed free-standing installation, 1 kWp, 14% system losses, equator-facing panels with optimized tilt and the terrain horizon. Long-term climate estimates are not a forecast or a roof survey. Nearby buildings, trees, roof constraints, snow and local conditions can change actual output.
- Warsaw — Reference coordinates: 52.23, 21.01; Climate dataset / years: PVGIS-SARAH3 / 2005–2023; Data retrieved: .
- Kraków — Reference coordinates: 50.06, 19.94; Climate dataset / years: PVGIS-SARAH3 / 2005–2023; Data retrieved: .
PVGIS methodology · Sources and assumptions (English) · Download the underlying data (JSON)