Solar States

Tennessee · homeowner planning guide

Solar panels in Tennessee: costs, incentives & payback

Tennessee sits in a rare band - one of only four states without a statewide net-metering rule - yet still ranked 20th nationally for solar by 2015 and now hosts several of the South's bigger farms.

Sun resourceModerate sun resource
Sun (2024)4.51 kWh/m²/day
Federal credit30% (2022–25 installs only)
State incentiveCheck eligibility
Export rulesCheck utility tariff

Guide updated: 2026-09-11. Earlier local source notes dated 2026-08-16. Current program eligibility requires a separate check.

Plan with your own numbers

Solar tools for Tennessee homeowners

Start with the solar calculator using your bill, fixed charges, self-consumption and export-price assumptions. The utility rules below are not automatically applied in the calculator. Utility production charges may need a separate adjustment; this is a planning scenario, not a utility tariff simulation or guaranteed savings.

Estimate solar size and cost in TennesseeCalculate panels for a Tennessee homeEstimate Tennessee solar paybackCheck solar production context for TennesseePlan a home battery around Tennessee export rules

Before comparing solar quotes in Tennessee

For your Tennessee address, does the quote identify the local distributor and any TVA-related approval or generation purchase arrangement?

  1. Compare cash cost first. Divide the quoted solar cash price by system size in watts. Keep batteries, roof work and financing fees separate. Compare quotes by cost per watt.
  2. Separate incentives from bill savings. Require written eligibility and approval for each state or utility benefit. A pending application is not a guaranteed payment.
  3. Test the payback assumptions. Use your actual electricity bill and applicable export terms. Estimate your solar break-even year without unconfirmed incentives.

Federal credit: distinguish a past installation from a new one

The IRS states that the residential clean energy credit is not available for property placed in service after December 31, 2025. Paying before that date does not make a later completed installation eligible. A qualifying unused credit from an earlier installation is a separate tax question. Read the IRS credit guidance and installation-deadline FAQ (question 7).

Federal guidance checked 2026-09-11. This is general planning information, not individualized tax advice.

Source checks for Tennessee homeowners

EIA Tennessee energy profile provides state energy context, not a residential installation quote. Confirm current incentives with the administering agency and export terms with the utility named on your bill. These research links are not a confirmation that every local program described in the guide is currently open.

State context and earlier source notes

The notes below retain their recorded source dates. A dated reference is not a current tariff or an incentive approval; check the administering agency before relying on a financial claim.

  • source note 2026-08-16Much of Tennessee is served by TVA and local power companies: distributed solar interconnection and export credits follow TVA guidelines and LPC contracts rather than a classic state IOU NEM statute alone. — TVA distributed generation guidelines; SEIA Tennessee solar profile — accessed 2026-08-16
  • source note 2026-08-16Tennessee Valley residential rates are relatively low, which lengthens simple payback versus high-rate coastal markets. — U.S. EIA electricity price tables; SEIA Tennessee profile — accessed 2026-08-16
  • source note 2026-08-16Utility-scale and TVA renewable PPAs have added solar MW in the Valley; rooftop share remains thinner than Southeast leaders. — SEIA Tennessee solar profile; U.S. EIA electricity data browser — accessed 2026-08-16
  • source note 2026-08-16Local power company green-invest or dual-meter buyback options can differ by city — always read the LPC tariff, not a generic 'Tennessee NEM' blog post. — TVA LPC program materials; DSIRE Tennessee index — accessed 2026-08-16
  • source note 2026-08-16Federal 30% Residential Clean Energy Credit applied to qualifying Tennessee systems in service through Dec 31 2025 per the IRS. — IRS Residential Clean Energy Credit guidance — accessed 2026-08-16

The 30% federal Residential Clean Energy Credit applied to qualifying systems in service by December 31, 2025 — per the IRS, property placed in service after that date does not qualify, so new 2026 installations cannot claim it. State and utility programs change often; the notes above carry their source date. See the federal credit guide.

Questions homeowners ask

Is solar worth it in Tennessee?
The numbers are mixed: electricity is among the cheaper in the Southeast, so paybacks run long by national standards (a 2012 5 kW model showed ~14 years before the modern price crash). TVA has also been closing some of its support mechanisms; model your own bills, and check the local utility's net-metering agreement in writing first.
Does Tennessee have net metering?
Yes in practice but not by a uniform state law - Tennessee is one of only four states without a standard net-metering rule. Your utility must provide it, but terms are set utility-by-utility, mostly under TVA, so get the specific tariff in writing before you buy.
Are there solar incentives in Tennessee?
No stand-alone state rebate or tax credit; the federal Residential Clean Energy Credit applied to qualifying systems in service through Dec 31, 2025 (not later installs); also check utility/TVA programs (green pricing, producer tariffs). Because there is no state mandate, Tennessee's utilities decide how generously they pay excess generation.
What are Tennessee's bigger solar projects?
From the early West Tennessee Solar Farm (5 MW, 2012) through VW's 8 MW plant roof (2013), Selmer and Mulberry 20 MW farms (2014), and an ~53 MWAC park near Millington (2019) - the state grew to hundreds of MW today, mostly behind large customers and TVA contracts.
How much does the federal solar credit cover?
The federal Residential Clean Energy Credit covered 30% of qualified costs for systems in service from 2022 through December 31, 2025. Per the IRS, the credit is not available for property placed in service after that date. Tennessee-specific programs are being verified and will appear here as confirmed.
Do I need a battery with solar in Tennessee?
Not always — where utilities pay full-retail net metering, a battery's value is lower. Where net billing cuts export credits, batteries let you shift your own energy into the evening. Your Tennessee utility tariff determines the math.
Can I install solar panels myself in Tennessee?
DIY installs happen, but most utilities require a licensed electrician, permits and an inspection before interconnection. Check Tennessee's permit office and your utility's interconnection rules first.

How to buy solar in Tennessee — the honest version

  1. Model the math first. Get 2–3 quotes in $/W (dollars per watt, before credit) and compare on that number — not on "savings" projections. Use the quote scorecard.
  2. Check your utility's export rules. Retail net metering vs net billing changes whether you want a battery — see the notes above and the battery planner.
  3. Ask about the hidden three: permits, HOA rules and roof condition — walk the 16-question checklist before you sign.
  4. Confirm local sun. Measured 2024 irradiance for Tennessee is on the sun look-up; national literacy starts at the federal credit guide.