Solar energy in Lexington-Fayette, United States
Average irradiation 4.05 kWh/m²/day · ~1183 kWh per kWp per year
Monthly solar irradiation & temperature in Lexington-Fayette (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 1.93 | -0.2 | 47 |
| Feb | 2.65 | 1.3 | 64 |
| Mar | 3.70 | 6.7 | 90 |
| Apr | 5.01 | 12.8 | 122 |
| May | 5.54 | 18.1 | 135 |
| Jun | 6.27 | 22.5 | 152 |
| Jul | 6.01 | 24.5 | 146 |
| Aug | 5.56 | 24.3 | 135 |
| Sep | 4.61 | 20.8 | 112 |
| Oct | 3.34 | 13.7 | 81 |
| Nov | 2.35 | 6.8 | 57 |
| Dec | 1.67 | 2.0 | 41 |
Solar potential of Lexington-Fayette explained
Lexington-Fayette receives an average of 4.05 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 1183 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 Lexington-Fayette?
With 4.05 kWh/m²/day of average irradiation, a 1 kWp system in Lexington-Fayette produces roughly 1183 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 Lexington-Fayette?
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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