Solar Panels in Tennessee: Cost, Savings & Incentives (2026)
A 9kW solar system in Tennessee costs around $18,900 after the 30% federal tax credit and saves approximately $1,603 per year on electricity at the state's average rate of 12.2¢/kWh. With 5 peak sun hours per day, your estimated payback period is 11 years — leaving 15+ years of profit before the 25-year warranty period ends. Below: real cost data, all available incentives and a free personalised calculator.
Is solar worth it in Tennessee in 2026?
With an average electricity rate of 12.2¢ per kWh and 5 peak sun hours per day, Tennessee homeowners are in a good position to benefit from solar panels. A typical 9kW system will produce around 13,140 kWh per year — enough to offset a significant portion of a typical Tennessee home's electricity usage.
At current electricity rates, that production saves approximately $1,603 per year. Over 25 years — the standard panel warranty period — the projected net profit after recouping the system cost is around $21,175.
How much do solar panels cost in Tennessee?
A 9kW solar system — typical for a Tennessee home — costs approximately $27,000 before incentives (national average: ~$3,000 per kW installed).
| Cost item | Amount |
|---|---|
| System cost (9kW) | $27,000 |
| Federal 30% ITC | −$8,100 |
| Tennessee does not offer a state solar tax credit. TVA (Tennessee Valley Authority) customers may be eligible for the TVA Green Power Providers program. EPB in Chattanooga and other municipally-owned utilities have their own renewable energy programs. Federal 30% ITC applies to all Tennessee installations. | Additional savings |
| Net cost (after federal ITC) | $18,900 |
Actual costs vary by installer. Always get at least 3 quotes. Installer labour, roof type and system complexity affect final pricing.
Solar incentives in Tennessee (2026)
Federal Investment Tax Credit (ITC) — 30%
All US homeowners qualify for the 30% federal ITC through 2032. On a $27,000 system, this is a $8,100 tax credit — a direct reduction in federal taxes owed (not a deduction from taxable income).
Tennessee state incentives
Tennessee does not offer a state solar tax credit. TVA (Tennessee Valley Authority) customers may be eligible for the TVA Green Power Providers program. EPB in Chattanooga and other municipally-owned utilities have their own renewable energy programs. Federal 30% ITC applies to all Tennessee installations.
Use our Solar Tax Credit Calculator to calculate your exact federal and state incentive amounts based on your system cost.
Solar payback period in Tennessee
Based on a net system cost of $18,900 and estimated annual savings of $1,603, the estimated payback period for solar panels in Tennessee is approximately 11 years.
After payback, your solar panels continue to produce free electricity for another 14+ years. Use our Solar Payback Calculator to customise this for your specific electricity bill and system size.
What affects solar savings in Tennessee?
Every homeowner's solar savings are different. In Tennessee, the key variables are:
- Electricity rate (12.2¢/kWh): Tennessee's electricity rate is near the national average. Combined with sun hours and system size, this gives a typical homeowner a solid case for solar investment.
- Peak sun hours (5 hrs/day): Tennessee's solar resource is solid — comparable to Germany, which has one of the highest solar adoption rates in the world. Year-round production will be consistent.
- System size (9kW typical): The right size depends on your electricity bill. A $150/month bill typically requires a 6–8kW system to offset 80–100%. Use our System Size Calculator to find your exact target.
- Roof type and orientation: South-facing roofs at 30° pitch are ideal. West-facing roofs produce 15–20% less but may generate more electricity during peak-price afternoon hours, improving time-of-use savings.
Frequently asked questions — solar in Tennessee
Our calculators are pre-loaded with Tennessee's electricity rate (12.2¢/kWh) and sun hours (5 hrs/day).