Tennessee doesn’t get much attention in solar conversations — and there’s a reason for that. Unlike Georgia, Florida, or North Carolina, Tennessee has no state income tax, which means no state solar tax credit. The federal 30% Investment Tax Credit expired December 31, 2025 for homeowners who purchase solar with cash or a loan. And most of the state falls under TVA’s service territory, where net metering works differently — and less favorably — than in most other Southern states.
That doesn’t mean solar is off the table in Tennessee. It means the math looks different than what you might have read elsewhere. Battery storage changes the calculation significantly, and there are real incentives worth knowing about. Here’s what Tennessee homeowners actually have in 2026.
What Happened to the Federal Solar Tax Credit
The short answer: The 30% federal residential solar ITC expired December 31, 2025 for homeowners purchasing with cash or a loan. There is no federal income tax credit for new purchased solar installations in Tennessee in 2026. Homeowners who lease solar or sign a PPA may still benefit indirectly through the installer’s 48E commercial credit, which runs through 2027.
Through 2025, this credit gave buyers 30% of their total system cost back against federal income taxes — on a typical $25,000 Tennessee installation, that was $7,500. That’s gone for purchased systems. Financing with a solar loan doesn’t qualify either.
The only path to a version of this benefit in 2026 is through a solar lease or PPA, where the company that owns the system claims the commercial 48E credit and often passes savings along as lower monthly rates. See our full breakdown: Federal Solar Tax Credit 2026: What Happened and What Still Qualifies.
Tennessee Has No State Solar Tax Credit
Tennessee repealed its Hall Income Tax in 2021, and the state has no income tax on wages or salaries. There is no mechanism for a state solar income tax credit — and Tennessee has never had one. If you’ve seen websites listing Tennessee under “states with solar incentives,” they’re referring to utility programs or exemptions, not a tax credit.
Some neighboring states like North Carolina once had a 35% state solar credit — that expired in 2015. Tennessee never had anything comparable. The incentive picture here is utility rebates and property-level exemptions.
TVA Net Metering: The Biggest Factor in Tennessee Solar Math
Most of Tennessee falls under the Tennessee Valley Authority (TVA), a federal utility that distributes power through roughly 150 local power companies (LPCs) across the state. TVA’s approach to net metering is more limited than in most other Southern states — and it’s the factor that most affects solar ROI here.
Under TVA’s Generation Flexibility program, homeowners who generate excess solar electricity don’t receive the full retail rate for power sent back to the grid. TVA pays its “avoided cost” rate — roughly $0.03–$0.05 per kilowatt-hour for surplus generation. Retail rates in Tennessee average around $0.12/kWh. That means excess generation is credited at less than half — sometimes less than a quarter — of what you’d pay to buy electricity back.
The practical consequence: Tennessee solar systems need to be sized carefully to avoid over-generating. A system sized to eliminate your bill entirely may produce significant excess credited at a fraction of retail value, which extends payback periods significantly compared to states with full net metering.
Not in TVA territory? Memphis Light, Gas and Water (MLGW) serves Memphis independently of TVA. EPB in Chattanooga has historically offered more favorable solar interconnection terms due to its smart grid infrastructure. Always check with your specific utility — terms vary meaningfully by LPC.
Tennessee Property Tax Exemption for Solar
One solid incentive Tennessee does offer: solar installations are exempt from property tax assessment. Under Tennessee Code Annotated § 67-5-601, the value a solar system adds to your home is excluded from your taxable assessed property value.
On a $25,000 system in a county with a 1% property tax rate, that’s $250/year — about $5,000 over 20 years — in taxes you don’t pay. It applies automatically once your system is permitted. No application required.
Sales Tax Exemption on Solar Equipment
Tennessee exempts qualifying solar energy equipment from state sales tax under Tenn. Code Ann. § 67-6-329. Given Tennessee’s 7% base sales tax rate — with local rates pushing total sales tax to 9.75% in some counties — this exemption is meaningful on larger purchases. On a $25,000 system, you’re potentially saving $1,750–$2,400 depending on your county.
Why Battery Storage Often Makes More Sense in Tennessee
Given TVA’s low buyback rate for excess solar generation, battery storage changes the economics of Tennessee solar more than in most states. Instead of exporting surplus power at $0.04/kWh and buying it back at $0.12/kWh, a battery lets you store that surplus and use it yourself — capturing the full retail value of your own production.
For Tennessee homeowners who generate more than they consume during peak sunlight hours, this self-consumption strategy dramatically improves the financial case for solar. You’re not losing two-thirds of your excess generation value to TVA’s avoided-cost rate — you’re using it at night or during cloudy periods.
This is the angle that makes backup power products like the EcoFlow DELTA Pro worth serious consideration for Tennessee homeowners. For homeowners interested in off-grid or partial off-grid setups — where TVA’s net metering limitations become irrelevant entirely — Inergy’s lineup is worth a look. Use code PZSGK8326 for savings.
Local Power Company Programs
TVA’s roughly 150 local power companies occasionally run their own solar or energy efficiency incentive programs layered on top of TVA’s baseline. These vary significantly by LPC and change frequently. Nashville Electric Service (NES), Knoxville Utilities Board (KUB), and EPB in Chattanooga have all offered programs in recent years — some with battery storage rebates, some with solar-specific incentives.
Before signing any solar contract in Tennessee, call your specific LPC and ask directly what programs are currently available. Your LPC’s current offerings won’t necessarily appear on TVA’s website, and they change regularly. This is the most consistently overlooked step in the Tennessee solar research process.
The Full Tennessee Incentive Stack in 2026
Here’s the realistic picture for a Tennessee homeowner installing a 10kW system at $25,000 in 2026:
Federal ITC: $0 (expired for purchased systems). State income tax credit: $0 (doesn’t exist in TN). Sales tax exemption: approximately $1,750–$2,400 saved. Property tax exemption over 20 years: approximately $5,000. Net metering savings: lower than comparable Southern states due to TVA’s avoided-cost buyback structure. Effective payback period: typically 10–14 years for purchased systems without battery storage; potentially shorter with battery storage sized to maximize self-consumption.
Compare this to Georgia or Florida, where full retail net metering has meant 7–9 year payback periods. Tennessee requires more realistic expectations — but the long-term economics still make sense for homeowners planning to stay put for 10+ years. For more on what systems cost, see our Tennessee solar cost guide.
Frequently Asked Questions
Is there a state solar tax credit in Tennessee in 2026?
No. Tennessee has no state income tax on wages or salaries, so there is no state income tax credit mechanism for solar. Tennessee has never had a state solar income tax credit, and none is currently pending or proposed.
Does TVA offer traditional net metering?
No. TVA’s Generation Flexibility program pays homeowners for excess solar generation at the avoided-cost rate — roughly $0.03–$0.05/kWh — rather than the full retail rate of approximately $0.12/kWh. This is why battery storage is more financially compelling in Tennessee than in states with full retail net metering.
Is there still a federal tax credit for solar in Tennessee in 2026?
The 30% federal residential ITC expired December 31, 2025 for homeowners purchasing with cash or a loan. There is no federal income tax credit for new purchased residential solar in 2026. Solar leases and PPAs may still qualify indirectly — the installer-owned system can claim the commercial 48E credit through 2027.
Is solar worth it in Tennessee?
For many homeowners, yes — but with longer payback periods than most Southern states. TVA’s limited net metering and Tennessee’s relatively low utility rates typically mean 10–14 year payback for a purchased system without battery storage. Adding battery storage, carefully sizing the system, and checking your local power company for current programs can all meaningfully improve the numbers.
Bottom Line
Tennessee’s solar incentive stack is thinner than most Southern states — no state income tax credit, a federal ITC that expired in 2025 for purchased systems, and TVA net metering that pays below retail for surplus generation. The real levers in 2026 are the property tax exemption, the sales tax exemption on equipment, battery storage that lets you capture the full value of your own production, and whatever your local power company is currently offering.
Start with your specific LPC’s interconnection terms and a realistic payback calculation — not the incentive stack that applies in Georgia or Florida. The math works differently in Tennessee, and understanding that upfront will save you from disappointment down the road.