Peak sun hours in Tennessee (2026)
Tennessee averages 4.7 peak sun hours per day — 0% above the US average of 4.7. In practical terms, every 1 kW of solar there produces about 1,372 kWh of electricity a year.
Peak sun hours/day
4.7
Annual kWh per kW
1,372
vs US average
+0%
What this means for your system
To produce a given amount of electricity, you need fewer panels where there are more peak sun hours. At 4.7 hours, a typical home in Tennessee needs a system sized to its usage and local sun — see exact numbers on the Tennessee solar cost page or work it out with our sizing guide.
Peak sun hours by city in Tennessee
Sunlight varies within Tennessee. Here are city-level figures from multi-year irradiance data.
| City | Peak sun hours/day | Annual kWh per kW |
|---|---|---|
| Nashville | 4.38 | 1,279 |
| Memphis | 4.6 | 1,343 |
| Knoxville | 4.45 | 1,299 |
| Chattanooga | 4.47 | 1,305 |
Peak sun hours in Tennessee: FAQ
How many peak sun hours does Tennessee get?
Tennessee averages about 4.7 peak sun hours per day — 0% above the US average. That works out to roughly 1,372 kWh of electricity per year for every 1 kW of solar installed.
Is Tennessee good for solar based on sunlight?
Sunlight is only part of the picture. Tennessee's 4.7 peak sun hours help production, but your electricity rate and incentives matter just as much. See the full economics on our Tennessee solar cost page.