Solar Panel Installation Cost in Knoxville, TN

How much do solar panels cost in Knoxville, TN? Compare solar panel installation costs, state rebates, heat pump incentives & local utility programs. Find solar panels for your home with our free calculator.

Last updated: April 1, 2026

Avg System Cost

$16,464

Net After Incentives

$16,464

Solar Panel Cost & Savings in Knoxville

Average System Cost

$16,464

$3.29/W (median: $3.42/W)

Knoxville Savings Breakdown

Item	Amount
Average System Cost	$16,464
Estimated Net Cost	$16,464

Price range:$13,994

$18,934

Data sourced from EnergySage & Rewiring America APIs. Incentive values are estimates based on a representative homeowner profile. Run the calculator for a personalised breakdown.

Solar Panel Installers in Knoxville

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Solar Energy in Knoxville, TN: Complete Guide

Knoxville is served by the Knoxville Utilities Board (KUB), a municipal utility that purchases wholesale power from TVA. Like Memphis, the TVA connection defines the solar experience. TVA's Green Connect program applies here.

Knoxville has better solar resource than people expect at about 4.5 to 4.9 peak sun hours per day, and the ridgeline geography of East Tennessee gives many homes good sun exposure. KUB/TVA rates are moderate at about $0.10 to $0.13 per kWh.

Tennessee has no state income tax on wages and no state solar incentive. The federal ITC expired December 2025. Like Memphis, the low rates make payback longer.

Solar Potential in Knoxville

Knoxville averages 4.5 to 4.9 peak sun hours per day. A 7 kW system produces about 8,800 to 10,500 kWh per year. East Tennessee's mountain ridges can create shading issues depending on lot orientation.

Local Solar Incentives & Rebates in Knoxville

Knoxville incentives mirror Memphis: TVA Green Connect framework, KUB rates approximately $0.10 to $0.13 per kWh, property tax exemption in Tennessee, about 9.25% combined sales tax in Knox County, no state solar tax credit.

Solar Installation Tips for Knoxville Homeowners

Knoxville installation notes: Permits through Knox County or City of Knoxville Codes Enforcement. KUB/TVA interconnection process applies. Budget 4 to 8 weeks. Local solar companies familiar with TVA procedures are preferable.

Frequently Asked Questions About Solar in Knoxville

Is solar worth it in Knoxville?

The economics are tighter here because KUB/TVA rates are low. Payback runs 14 to 18 years. Solar works best for Knoxville homes with higher bills ($130+) or homeowners who want energy independence. The 25 to 30 year system life means net returns are positive, just slow to arrive.

How much does solar cost in Knoxville?

Expect $2.50 to $2.85 per watt. A 7 kW system costs about $17,500 to $19,950 plus 9.25% sales tax. No state tax credit. The federal ITC expired December 2025.

How does TVA handle solar in Knoxville?

KUB buys wholesale power from TVA. TVA's Green Connect program establishes solar interconnection terms. Your installer coordinates with both KUB and TVA. The process is similar to the Memphis/MLGW arrangement.

Reviewed by the Net-Zero USA editorial team

Last reviewed: April 1, 2026

Sources: KUB tariff, TVA Green Connect, Knox County Codes, NREL PVWatts, EIA