Solar energy in Vilnius, Lithuania
Average irradiation 2.85 kWh/m²/day · ~832 kWh per kWp per year
Monthly solar irradiation & temperature in Vilnius (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 0.56 | -6.5 | 14 |
| Feb | 1.29 | -5.5 | 31 |
| Mar | 2.59 | -0.5 | 63 |
| Apr | 4.04 | 6.4 | 98 |
| May | 5.20 | 12.6 | 126 |
| Jun | 5.58 | 16.1 | 136 |
| Jul | 5.17 | 18.6 | 126 |
| Aug | 4.38 | 17.8 | 107 |
| Sep | 3.01 | 12.8 | 73 |
| Oct | 1.48 | 6.3 | 36 |
| Nov | 0.56 | 1.5 | 14 |
| Dec | 0.37 | -3.4 | 9 |
Solar potential of Vilnius explained
Vilnius receives an average of 2.85 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 832 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 Vilnius?
With 2.85 kWh/m²/day of average irradiation, a 1 kWp system in Vilnius produces roughly 832 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 Vilnius?
Approximately 4,000 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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