Solar energy in Nashville, United States
Average irradiation 4.23 kWh/m²/day · ~1235 kWh per kWp per year
Monthly solar irradiation & temperature in Nashville (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 2.20 | 2.3 | 54 |
| Feb | 2.78 | 4.2 | 68 |
| Mar | 3.88 | 9.3 | 94 |
| Apr | 5.21 | 14.8 | 127 |
| May | 5.74 | 19.6 | 140 |
| Jun | 6.34 | 24.1 | 154 |
| Jul | 6.09 | 26.1 | 148 |
| Aug | 5.58 | 26.0 | 136 |
| Sep | 4.74 | 22.4 | 115 |
| Oct | 3.58 | 15.6 | 87 |
| Nov | 2.64 | 8.9 | 64 |
| Dec | 1.92 | 4.3 | 47 |
Solar potential of Nashville explained
Nashville receives an average of 4.23 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 1235 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 Nashville?
With 4.23 kWh/m²/day of average irradiation, a 1 kWp system in Nashville produces roughly 1235 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 Nashville?
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%.
Compare with nearby cities
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