Solar energy in Riga, Latvia
Average irradiation 2.8 kWh/m²/day · ~818 kWh per kWp per year
Monthly solar irradiation & temperature in Riga (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 0.44 | -4.9 | 11 |
| Feb | 1.11 | -5.1 | 27 |
| Mar | 2.45 | -1.1 | 60 |
| Apr | 3.97 | 5.1 | 97 |
| May | 5.32 | 11.3 | 129 |
| Jun | 5.69 | 15.3 | 138 |
| Jul | 5.33 | 18.2 | 130 |
| Aug | 4.31 | 17.3 | 105 |
| Sep | 2.81 | 12.9 | 68 |
| Oct | 1.37 | 6.7 | 33 |
| Nov | 0.48 | 2.2 | 12 |
| Dec | 0.28 | -1.9 | 7 |
Solar potential of Riga explained
Riga receives an average of 2.8 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 818 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 Riga?
With 2.8 kWh/m²/day of average irradiation, a 1 kWp system in Riga produces roughly 818 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 Riga?
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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