Solar energy in St. Petersburg, United States
Average irradiation 5.12 kWh/m²/day · ~1495 kWh per kWp per year
Monthly solar irradiation & temperature in St. Petersburg (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 3.57 | 15.2 | 87 |
| Feb | 4.33 | 16.9 | 105 |
| Mar | 5.46 | 19.3 | 133 |
| Apr | 6.41 | 22.6 | 156 |
| May | 6.81 | 25.7 | 166 |
| Jun | 6.19 | 27.4 | 151 |
| Jul | 5.93 | 27.8 | 144 |
| Aug | 5.63 | 27.8 | 137 |
| Sep | 5.19 | 26.5 | 126 |
| Oct | 4.72 | 23.6 | 115 |
| Nov | 3.86 | 19.6 | 94 |
| Dec | 3.29 | 17.3 | 80 |
Solar potential of St. Petersburg explained
St. Petersburg receives an average of 5.12 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 1495 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This places St. Petersburg among the stronger solar locations globally — comparable to southern Spain or California.
Frequently asked questions
Is solar worth it in St. Petersburg?
With 5.12 kWh/m²/day of average irradiation, a 1 kWp system in St. Petersburg produces roughly 1495 kWh per year. That is an excellent solar resource — payback periods are typically among the shortest worldwide.
How much electricity would a 5 kW system produce in St. Petersburg?
Approximately 7,000 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%.
Compare with nearby cities
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