Solar energy in Varna, Bulgaria
Average irradiation 3.91 kWh/m²/day · ~1142 kWh per kWp per year
Monthly solar irradiation & temperature in Varna (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.49 | 3.9 | 36 |
| Feb | 2.25 | 4.6 | 55 |
| Mar | 3.34 | 7.1 | 81 |
| Apr | 4.84 | 10.5 | 118 |
| May | 5.94 | 16.3 | 144 |
| Jun | 6.52 | 21.5 | 159 |
| Jul | 6.62 | 24.3 | 161 |
| Aug | 5.92 | 24.7 | 144 |
| Sep | 4.30 | 20.8 | 105 |
| Oct | 2.75 | 15.6 | 67 |
| Nov | 1.65 | 10.8 | 40 |
| Dec | 1.28 | 6.0 | 31 |
Solar potential of Varna explained
Varna receives an average of 3.91 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 1142 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This is a solid mid-range solar resource: production is meaningful year-round, though winter output drops noticeably.
Frequently asked questions
Is solar worth it in Varna?
With 3.91 kWh/m²/day of average irradiation, a 1 kWp system in Varna produces roughly 1142 kWh per year. That is a good solar resource; with current panel prices most systems pay back well within their lifetime.
How much electricity would a 5 kW system produce in Varna?
Approximately 6,000 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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