PVGIS · SolarMapped
Solar potential in Helsinki
This estimate represents one coordinate near the city center, not every roof or neighborhood.
Explore on the solar map ↗Annual values
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.
Compared with the sampled-city benchmark: +5.3% (925kWh/kWp/year). 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.
Monthly solar irradiation and PV output
Highest-output month: May · 146.8kWh/kWp/month. Lowest-output month: December · 11.1kWh/kWp/month.
| Month | Estimated PV output (kWh/kWp/month) | Solar irradiation (kWh/m²/month) |
|---|---|---|
| January | 15.7 | 18.6 |
| February | 34.7 | 40.4 |
| March | 89.3 | 105 |
| April | 118.6 | 144 |
| May | 146.8 | 184.4 |
| June | 143.4 | 184.3 |
| July | 145.2 | 188.4 |
| August | 121.3 | 156 |
| September | 83.8 | 105.1 |
| October | 48 | 58.9 |
| November | 16.4 | 20.3 |
| December | 11.1 | 13.4 |
More cities in Finland
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.
- Helsinki — Reference coordinates: 60.17, 24.94; Climate dataset / years: PVGIS-SARAH3 / 2005–2023; Data retrieved: .
PVGIS methodology · Sources and assumptions (English) · Download the underlying data (JSON)