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Tennessee Solar Cost Calculator

Estimate the cost and payback of a residential solar system in Tennessee. Adjust system size, installed price, value captured and verified incentives using transparent 2026 planning data.

Federal residential solar credit in 2026: $0. CalcuRiver does not subtract the expired 30% Section 25D credit from this estimate. Add only local or utility incentives you have independently verified.
State planning yield1,335 kWh/kW
Installed-cost benchmark$3.51/W
Federal credit assumed0%
Electricity rateloading…
2026 state snapshot

What changes in Tennessee

Tennessee's residential electricity rate is 25.1% below the U.S. average. Combined with a planning yield of 1,335 kWh/kW-year and a $4/W installed-cost benchmark, the same 8 kW system produces a different state-level cost and value profile.

View Tennessee electricity rates →
Residential electricity rate13.71¢/kWh25.1% below U.S. average
8 kW annual production10,680 kWh1,335 kWh/kW planning yield
8 kW gross benchmark cost$28,080$4/W planning benchmark
Annual value at full retail$1,464$122/month equivalent
Simple payback at full retail19.2 yearsBefore financing and unverified incentives
Existing city pages8Current CalcuRiver city coverage

This 8 kW snapshot is a comparison scenario, not a quote. It uses CalcuRiver's state planning yield, installed-cost benchmark and EIA 2026-07 residential rate. Actual roof production, export compensation, taxes, financing and local incentives can materially change the result.

state solar model

Build your Tennessee scenario

Start with state planning benchmarks, then replace them with your actual quote or site-specific inputs.

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The state planning benchmark is not a statewide average and does not replace a roof-specific production model or utility export analysis.

city coverage

Solar cost by city in Tennessee

Open a city page for a location-specific production benchmark and local planning inputs.

ChattanoogaCity solar estimate →ClarksvilleCity solar estimate →FranklinCity solar estimate →Johnson CityCity solar estimate →KnoxvilleCity solar estimate →MemphisCity solar estimate →MurfreesboroCity solar estimate →NashvilleCity solar estimate →

How this Tennessee estimate works

  • Annual production = system size × 1,335 kWh/kW planning benchmark.
  • Retail-value ceiling = annual production × current Tennessee residential electricity price.
  • The value-capture control lets you haircut that ceiling for self-consumption/export economics.
  • Simple payback = entered net installed cost ÷ modeled annual electricity value.

Source boundaries

1,335 kWh/kW-year planning benchmark for Tennessee; a planning input, not a statewide average or site-specific roof forecast. Roof orientation, shading, equipment, local weather and utility export compensation can materially change the result.

Production methodologyCost benchmarkDetailed solar calculator
2026 state snapshot

How Tennessee differs

Residential electricity13.71¢/kWh
8 kW annual production10,680 kWh
8 kW benchmark gross cost$28,080
Simple retail-value payback19.2 years

Tennessee's July 2026 residential electricity benchmark is 25.1% below the U.S. average. Production and cost are planning benchmarks; utility export rules can change realized savings.

Rate source: EIA Electric Power Monthly Table 5.6.A · 2026-07 preliminary.

methodology & sources

Tennessee solar methodology

Production basis

1,335 kWh/kW-year planning benchmark for Tennessee; a planning input, not a statewide average or site-specific roof forecast.

Installed-cost basis

3.51 $/W planning benchmark; this is not an installer quote.

Electricity benchmark

13.71¢/kWh residential state benchmark for 2026-07 (preliminary).

Utility treatment

State pages show a planning-level retail-value benchmark. Utility export compensation can materially change realized savings.

Methodology: Solar utility model · CalcuRiver methodology.

why this estimate changes

Why this solar estimate changes

Solar value is driven by local production, installed cost, the retail value of electricity you avoid buying, and the compensation you receive for exported energy. CalcuRiver does not assume export credits equal the retail rate unless that utility program is explicitly verified.

Core logic: self-used solar offsets retail purchases; exported solar is valued only under a verified export-compensation rule.

Methodology & source policy

Continue this cost analysis

Use the same state context to connect solar production with grid prices, storage and EV charging.

Tennessee electricity ratesSee the grid-price benchmark used to value solar production.Tennessee home battery economicsEstimate storage value and self-consumption in the same state.EV charging in TennesseeSee how the same electricity market affects vehicle charging.