Solar energy in Tbilisi, Georgia
Average irradiation 3.86 kWh/m²/day · ~1127 kWh per kWp per year
Monthly solar irradiation & temperature in Tbilisi (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.87 | 1.0 | 45 |
| Feb | 2.77 | 2.6 | 67 |
| Mar | 3.48 | 7.2 | 85 |
| Apr | 4.32 | 11.7 | 105 |
| May | 5.25 | 17.6 | 128 |
| Jun | 6.17 | 22.8 | 150 |
| Jul | 6.00 | 26.0 | 146 |
| Aug | 5.52 | 25.6 | 134 |
| Sep | 4.26 | 20.4 | 104 |
| Oct | 2.96 | 14.0 | 72 |
| Nov | 2.04 | 7.1 | 50 |
| Dec | 1.64 | 2.2 | 40 |
Solar potential of Tbilisi explained
Tbilisi receives an average of 3.86 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 1127 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 Tbilisi?
With 3.86 kWh/m²/day of average irradiation, a 1 kWp system in Tbilisi produces roughly 1127 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 Tbilisi?
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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