How many peak sun hours does Nashville, TN get?

Nashville, TN averages approximately 4.46 peak sun hours per day based on Open-Meteo historical satellite data.

What is the average electricity rate in Nashville, TN?

The average residential electricity rate in Nashville, TN is approximately $0.122 per kWh (EIA data).

Is solar worth it in Nashville, TN?

Based on 4.46 peak sun hours and $0.122/kWh rates, a typical 6kW system in Nashville, TN has an estimated payback of 13.2 years and a 25-year NPV of approximately $6,439.

4.46 Peak Sun Hrs $0.122/kWh Tennessee

Solar Calculator — Nashville, TN

Adjust system size and cost. Location data: 4.46 peak sun hours/day, $0.122/kWh average rate.

Data last updated: July 25, 2026

Solar ROI Calculator

Assumes 4.46 peak sun hours, $0.122/kWh, 80% derating, 0.5% annual degradation, 2.5% utility escalation, 4% discount rate. Federal ITC 30% applied.

Key Assumptions

Peak Sun Hours (daily avg)	4.46 hrs
Avg. Electricity Rate	$0.122/kWh
Federal Tax Credit	30%
State Tax Credit	0% (none)
System Derating	80% (temp, inverter, soiling)
Annual Degradation	0.5%
Utility Escalation	2.5%/year
Discount Rate	4%

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