Is solar worth it in Tennessee?

What drives solar payback in Tennessee

Tennessee homeowners pay about 13.5¢/kWh, which is 4.9¢ below the national average. A rooftop here generates roughly 1300 kWh per kW each year — about the typical US figure. On exports, Tennessee offers limited net metering: TVA territory offers limited export compensation; size to self-consumption.

A worked example

For a Tennessee home with a $118/month power bill (typical household usage at Tennessee’s rate):

That nets out to a payback of about 24.4 years — shorter than simply dividing net cost by year-one savings, because power prices climb ~2.5%/yr so your savings grow each year. Year-one savings already reflect Tennessee’s below-retail export rate (you save full value on the power you use as it’s made, less on what you export), which is why they’re lower than the bill. Assumes 3.00 $/W installed before incentives and a typical 40% self-consumption; your actual cost, roof and usage will differ — adjust the calculator above.

Who supplies your power in Tennessee

Tennessee sits almost entirely inside the Tennessee Valley Authority (TVA) footprint, and that shapes everything about solar here. TVA is the federal wholesale generator, but you buy your power from one of roughly 150 local power companies (LPCs) that distribute it — big municipals like Nashville Electric Service (NES), Memphis Light, Gas & Water (MLGW), the Knoxville Utilities Board (KUB) and Chattanooga's EPB, alongside dozens of rural electric co-operatives. Your rate and any rooftop-solar terms are set by TVA policy passed through your LPC, so the framework is broadly uniform statewide — but the details of any buy-back offer vary LPC by LPC.

What you’re paid for what you export

Expect little for the power you send out. No Tennessee law requires net metering, and TVA long ago wound down the retail-rate schemes — Generation Partners, then Green Power Providers, which closed in 2019 — that once paid rooftop owners well. What is left is TVA's Dispersed Power Production framework and LPC-level 'Flexibility' offerings, which typically credit exports at or near TVA's wholesale avoided-cost rate, a long way below the roughly 13 cents/kWh you pay for power. Some LPCs add a modest bill credit; many offer next to nothing. An exported kilowatt-hour is therefore worth a fraction of a consumed one, and the sensible response is to build the system around your own daytime load and let self-consumption carry the economics.

Tennessee incentives & taxes in 2026

Tennessee keeps its hands in its pockets. There is no SREC market, no state personal income tax on wages to credit against, and no residential rebate worth naming. Such support as exists mostly targets larger projects — the state's Green Energy Production and property-tax provisions can cap the assessed value of certified renewable installations — while a handful of LPCs or TVA pilots occasionally run limited incentives. Those offerings are patchy and change often, so anything you are counting on needs verifying with your own LPC first.

The 30% federal credit ended on 31 December 2025 and can now only reach a homeowner indirectly through a lease or PPA. Check the current state and utility programs on DSIRE’s Tennessee list, then type any incentive into the calculator above to see how it shortens your payback.

What solar costs in Tennessee

Tennessee's lower labour and permitting costs than the coasts keep installs at $2.70-$3.20 per watt — no dearer than the typical American install, and often a shade cheaper. That works out to around $21,000-$26,000 for an 8 kW system, with very little in 2026 to knock off the figure. The spread between installers is wide here, so the price you negotiate and the financing you choose — cash or genuinely low-interest — matter more than they would in an incentive-rich state.

The honest verdict for Tennessee

Tennessee is a self-consumption play, not a sell-to-the-grid play — export pay is too thin to build a case on. The sums only work if most of your production is used on-site: at about 13 cents/kWh and 1,300 kWh per kW a year, a well-sized, daytime-heavy household can still reach break-even in 12 years or a little more. Oversize in the hope of 'banking' power against those low avoided-cost credits and you will stretch that out badly. Solar here can pay — modestly — if you size it tightly to your own load and buy at a keen price.

Driving electric — or heating electric — in Tennessee?

Your home electricity rate also sets what it costs to charge an EV and whether a heat pump beats a gas furnace. See the Tennessee EV charging cost and the Tennessee heat pump vs gas comparison.

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