State Guide
Solar Panel Cost in Tennessee (2026)
See how much solar panels cost in Tennessee with local electricity rates, incentives, and payback estimates.
Last updated: 2026-06-09· Source label: EIA residential electricity rates, IRS federal clean energy credit, NREL/PVWatts solar assumptions
Tennessee is almost entirely TVA territory, which fundamentally shapes solar economics. The Tennessee Valley Authority supplies wholesale power to local distributors like Memphis Light Gas & Water, Nashville Electric Service, and dozens of municipal and co-op utilities. The residential electricity rate averages $0.15/kWh in latest EIA data — slightly above the national figure — powered by TVA's nuclear, hydro, and natural gas fleet. Tennessee has no statewide net metering law; instead, TVA runs its own Green Power Providers program, which pays solar owners a $0.02/kWh premium above the avoided-cost rate for exported power. With moderate climate and 4.8 peak sun hours, the calculator's 8–10 year payback at $2.55/W installed cost is a starting point. Homeowners served by MLGW or NES should confirm their local distributor's specific Green Power Providers participation terms.
Texas Solar Calculator
Estimates based on tennessee state averages. Your actual cost depends on roof, equipment, installer, and financing.
Incentives & Rebates
Federal Residential Credit Caveat
For projects where IRS project-year rules support a residential credit, a 30% credit would be roughly $6,885 on a $22,950 system. For 2026+ residential projects, RenewableCalc keeps this at 0% unless current IRS guidance supports eligibility.
State and Utility Incentive Context
Tennessee: No statewide solar incentive mandate. TVA's Green Power Providers program is the primary framework, paying a $0.02/kWh premium above avoided cost for exported generation. Local power companies including MLGW and NES participate through TVA. Verify current program enrollment status, capacity limits, and your distributor's specific participation terms before relying on this incentive in a quote.
Net Metering
Tennessee has no statewide net metering mandate. Instead, TVA's Green Power Providers program governs solar export compensation across virtually all Tennessee utilities — including MLGW, NES, and municipal distributors. The program pays a $0.02/kWh premium above TVA's avoided-cost rate. Confirm your local power company's Green Power Providers enrollment status, system-size limits, and whether the program has reached its capacity cap before sizing a system around exported kilowatt-hours.
Top Electric Utilities
- 1. Tennessee Valley Authority
- 2. Memphis Light Gas & Water
- 3. Nashville Electric
Source: EIA-861, by customer count
Recommended next steps
Calculate your ROI
Use Solar Panel Cost in Tennessee (2026) defaults with pre-filled state data.
Review an installer quote
Validate price per watt, system size, and financing terms.
Compare ownership models
Buy vs Lease vs PPA — see which fits your situation.
Refine your estimate
Use the Solar ROI Calculator with your Tennessee utility rate, annual kWh usage, and quote assumptions.
Frequently Asked Questions
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Show my solar path →Overview
Tennessee is almost entirely TVA territory, which fundamentally shapes solar economics. The Tennessee Valley Authority supplies wholesale power to local distributors like Memphis Light Gas & Water, Nashville Electric Service, and dozens of municipal and co-op utilities. The residential electricity rate averages $0.15/kWh in latest EIA data — slightly above the national figure — powered by TVA's nuclear, hydro, and natural gas fleet. Tennessee has no statewide net metering law; instead, TVA runs its own Green Power Providers program, which pays solar owners a $0.02/kWh premium above the avoided-cost rate for exported power. With moderate climate and 4.8 peak sun hours, the calculator's 8–10 year payback at $2.55/W installed cost is a starting point. Homeowners served by MLGW or NES should confirm their local distributor's specific Green Power Providers participation terms.
Use this result
Use the calculator inputs first, then compare the result against local rates, incentives, roof conditions, and utility export rules.
Method, assumptions, and sourcesOpen this section when you want to audit the calculation behind the estimate.ShowHide
Calculation Method
Tennessee solar payback = net installed cost after incentives / annual avoided electricity cost plus export credits
Key Assumptions
- Policy last reviewed: 2026-06-09. Federal residential credit assumptions are project-year dependent and not applied by default for 2026+ projects.
- Residential rate and installed-cost figures are planning benchmarks, not a final utility bill audit or installer quote.
- The model assumes a roof with usable sun exposure; shading, roof age, electrical upgrades, permitting, and financing can materially change cost.
- Tennessee economics should be checked against TVA territory rules, moderate rates, and summer cooling demand.
- The federal tax credit only helps households with sufficient tax liability and qualifying project documentation.
Data Sources
Electricity rates
EIA Electric Power Monthly
Residential electricity-rate benchmark used for avoided-bill savings.
Solar production
NREL PVWatts
Solar production assumptions should be checked against local roof orientation, shading, and climate.
Federal incentive
IRS Residential Clean Energy Credit
Supports 2026 Section 25D expiration (residential ITC no longer available by default) for qualifying residential solar costs.
State and utility policy
DSIRE and local utility tariff pages
Used as a reminder to verify state incentives, net-metering, export-credit, and rebate rules before relying on an estimate.
Result Summary
Net cost before federal residential credit
~$22,950
Uses Tennessee's $2.55/W installed-cost default and no statewide cash incentive default; no 2026+ federal residential credit is applied by default.
Estimated payback
8-10 years
Depends on actual utility rate, No net metering mandate (TVA offers $0.02/kWh premium), installed cost, roof production, financing, and incentive eligibility.
Annual bill offset
$1,350-$1,850/yr
Estimate based on a 9.0 kW system, 4.8 peak sun hours/day, $0.15/kWh, and PVWatts-style production before fixed charges or export-credit adjustments.
Formula Assumptions Data Sources FAQ Related Links
Compare Solar Costs With Neighboring States
Solar economics vary by state. Compare Tennessee with nearby states to see how electricity rates, incentives, and payback periods differ in your region.