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Solar Installation in Knoxville, TN

Compare 5 local solar installation pros. Typical service: $13456–$18560.

Top Solar Installation Companies in Knoxville

  1. 1.Your Home Solar

    4.9★ (97 reviews)

    4.9★ from 97 reviews

    +18658008702Website

  2. 2.Sunrise Solar Solutions LLC

    4.6★ (22 reviews)

    4.6★ from 22 reviews

    +18665527473Website

  3. 3.Solar Alliance

    3.7★ (28 reviews)

    3.7★ from 28 reviews

    +18653094674Website

  4. 4.Appalachian Renewable Resources

    5.0★ (6 reviews)

    5.0★ from 6 reviews

    +18653003335Website

  5. 5.Design 1 Solar Group Knoxville

    2.3★ (11 reviews)

    2.3★ from 11 reviews

Solar Installation Cost in Knoxville

Local ranges, adjusted for area wage and cost-of-living data.

ServiceTypical range in Knoxville
6 kW system, installed$13,456–$18,560/job
8 kW system, installed$17,910–$24,778/job
10 kW system, installed$22,365–$30,995/job

Solar Installation prices in Knoxville run about 7% below the national average, based on what this trade earns in the metro area — so neighbouring cities in the same metro see similar rates.

Quotes on this page come from 5 companies serving Knoxville, rated 4.1★ on average across 164 customer reviews.

Knoxville Climate & Seasonal Timing

What Knoxville's weather means for scheduling solar installation.

Last spring frost
April 11
First fall frost
October 30
Annual precipitation
51.93"
Heating degree days
3,955
Cooling degree days
1,339
MonthLowHighPrecip
Jan27.2°47°4.84"
Feb29.6°51.6°4.63"
Mar36.1°61°4.64"
Apr43.7°69.8°4.31"
May53.4°77.6°4.8"
Jun62.6°84.9°3.9"
Jul66.8°87.8°5.57"
Aug65.5°87.5°3.35"
Sep58.2°82.1°3.74"
Oct46°71.5°2.84"
Nov36.3°60.4°4.24"
Dec29.7°49.5°5.07"

NOAA station data 5.01 miles from Knoxville.

Permits & Regulations in TN

Permit typically required

  • Electrical projects of $25,000 or more require a Tennessee Board for Licensing Contractors license with the electrical classification
  • Below $25,000, the state Limited Licensed Electrician license applies where the state fire marshal issues permits
  • Counties with their own codes offices, such as Davidson, Knox and Shelby, license electricians locally

License required: Tennessee contractor license (electrical, $25,000+) or Limited Licensed Electrician

Sources: www.tn.gov, www.tn.gov

Solar Installation FAQs for Knoxville

How much does solar cost in Knoxville?

A 6 kW home solar system in Knoxville typically runs $13456-$18560 installed, before any incentives.

How many solar installers serve Knoxville?

We track 5 solar installation companies serving Knoxville.

Is solar installation in Knoxville more expensive than average?

Electrical installation labor in Knoxville runs about -7.2% versus the national average.

Do I need a permit for solar panels in Knoxville, TN?

In TN, Electrical projects of $25,000 or more require a Tennessee Board for Licensing Contractors license with the electrical classification. Rooftop solar in Knoxville needs a building and electrical permit plus a utility interconnection agreement.

Is there a federal solar tax credit in 2026?

No for homeowners buying a system: the residential federal credit ended December 31, 2025, so a Knoxville quote of $13456-$18560 is close to the out-of-pocket cost unless a state or utility rebate applies.

How much does air conditioning drive solar savings in Knoxville?

Knoxville sees about 1,339 cooling degree days a year; the more air conditioning a home runs, the more of a solar systems output it uses directly.

How many quotes should I get for solar in Knoxville?

At least three; with 5 installers serving Knoxville, compare the price per watt, panel and inverter models, and the workmanship warranty.

Does heat reduce solar output in Knoxville?

Slightly; panels lose efficiency on days near 88F, so Knoxville quotes should use temperature-adjusted production estimates.