Are Solar Panels Worth It in Tennessee? (2026)

Conditional — solar works in Tennessee, but shop hard. — a 6.0 kW rooftop system in Tennessee pays back in about 10.5 years and delivers $10,398 in net 20-year savings after install cost and the federal tax credit. Payback is in the 10-14 year window. Getting a below-average installer price is important.

Payback10.5 yrs

Annual savings$1,097

Net install (after ITC)$11,550

20-yr net$10,398

Assumes 6 kW system at $2.75/watt (state avg), 4.3 peak sun hours/day in Tennessee, and 14.94¢/kWh electricity rate (April 2026).

The short answer

Solar in Tennessee pays back within panel warranty life but requires disciplined shopping. Prioritize installers quoting below the state average.

The 4 things that actually determine "worth it"

Electricity rate. Tennessee: 14.94¢/kWh. National avg: 18.83¢. You’re 21% below average — cheap grid electricity makes payback slower.
Sunshine. Tennessee: 4.3 peak sun hours/day. National avg: 4.5. Near average sun.
Install cost in Tennessee. $2.75/watt (state avg). Cheaper than national $3.00/W — competitive installer market here.
Incentive stack. Federal ITC 30% applies universally. No state income-tax credit in Tennessee. Net metering: TVA GPP (Green Power Providers) — production incentive available Full incentive breakdown →

Where Tennessee ranks nationally

Across all 51 states, Tennessee ranks #38 of 51 by 20-year net solar savings (1 = best). The top states are dominated by combinations of high electricity rates and high sunshine (CA, HI, MA, NY, CT). The bottom are cheap-power / cloudy-sky states (WA, OR, ID, ND).

See the full national ranking.

Break-even analysis

Your solar system in Tennessee needs to save $11,550 in electricity to pay for itself. At $1,097/year savings, that’s 10.5 years. Panels are warrantied for 25 years and typically last 30+ — meaning 19.5+ years of free electricity after breakeven.

Common objections addressed

“What if I move before payback?”

Homes with paid-off solar typically sell for ~$15,000-$25,000 more than comparable homes without. If you owe money on the panels (loan), the sale is more complex. Cash or fully-paid-off systems recover most or all of the remaining "unused" value at sale.

“Won’t rates drop?”

U.S. residential electricity rates have risen ~4%/year over the past decade. Even if rates flatline, the payback above holds. If rates rise, your solar looks better in retrospect.

“What about hail / storms?”

Solar panels are rated for 1-inch hail at 50 mph. Damage claims are covered by homeowner’s insurance in almost all cases (verify with your carrier).