Is there a limit to the amount of solar panels a house can have in Knoxville?

As a general rule, unless there are local limitations, the main limitations to the amount of solar panels you can put on your roof are the available space on your roof, your electricity usage, your providers net metering rules, and the limitations of your house hold electrical system.

How much to install solar panels in Knoxville?

Based on our research the average price per installed watt is $3.65 in Knoxville. This means for a 10kW system you can expect to pay $36,500 though pricing can vary significantly between installers based on the projects requirements.

How much do solar panels add to house value in Knoxville?

Based on a Zillow research study from 2019, home with solar panels sell for roughly 4.1% more.

What direction should solar panels face in Knoxville?

To generate the most power, solar panels in the United States should face true south as this generally results in the solar panels receiving the most light each day throughout the course of the year. That said, given that energy prices are often variable throughout the day, your installer may recommend you rotate your panels slightly so that the panels will receive more light at the end of the day when energy prices can be more expensive. That said, for most consumers the positioning of solar panels is highly dependent on your home's roof.

How many solar panel installers in Knoxville?

Based on our continuously updated database of solar installers, we have found 23 verified solar install companies in Knoxville

Solar Energy in Knoxville

Solar Rates, Incentives, Plans & Statistics

Going solar in Knoxville, TN

In Knoxville, an average home needs a 9kW solar system in order cover most of their electricity needs. Given the average residential price-per-watt of $3.65 in Knoxville, a 9kW system can cost around $32,850 depending on applicable rebates and other factors.

Average out-of-pocket cost for a 5 kW system The upfront amount spent to buy and install solar.

Knoxville: $18,250US Average: $18,172

Average Payback Period The number of years until you break even on the solar investment.

Knoxville: 12 yearsUS Average: 11 years

Average Net 20-year savings The total amount of money saved over 20 years minus the out-of-pocket cost.

Knoxville: $13,127US Average: $14,836

Solar Potential in Knoxville

Estimated system size and solar electricity production per median viable roof in
Knoxville.

Roof size 804sq. ft.

Capacity 11.25kW DC

Electricity 13.6kkWh AC per yr.

Go Solar for as low as $79/mo

Compare solar panels by system size in Knoxville

Get the most value out of your roof by comparing the different benefits a given system size has.

System Size 5kW

Roof Size Min. space required

358 ft²

Electricity Value Annual Production $889 a year

Est. Price

$18,250

Savings from a 5kWthis system

Est. yearly production 7,197 kWh
Est. monthly savings $74
Full payback in 21 years

Environmental Impacts

Reduces CO2 emissions by 2.3 tons a year
Equivalent to planting 106 trees a year
Equivalent to driving 5,688 mi less a year

System Size 6kW

Roof Size Min. space required

429 ft²

Electricity Value Annual Production $1,067 a year

Est. Price

$21,900

Savings from a 6kWthis system

Est. yearly production 8,636 kWh
Est. monthly savings $89
Full payback in 21 years

Environmental Impacts

Reduces CO2 emissions by 2.76 tons a year
Equivalent to planting 127 trees a year
Equivalent to driving 6,825 mi less a year

System Size 7kW

Roof Size Min. space required

501 ft²

Electricity Value Annual Production $1,244 a year

Est. Price

$25,550

Savings from a 7kWthis system

Est. yearly production 10,075 kWh
Est. monthly savings $104
Full payback in 21 years

Environmental Impacts

Reduces CO2 emissions by 3.22 tons a year
Equivalent to planting 148 trees a year
Equivalent to driving 7,963 mi less a year

System Size 8kW

Roof Size Min. space required

572 ft²

Electricity Value Annual Production $1,422 a year

Est. Price

$29,200

Savings from a 8kWthis system

Est. yearly production 11,514 kWh
Est. monthly savings $119
Full payback in 21 years

Environmental Impacts

Reduces CO2 emissions by 3.68 tons a year
Equivalent to planting 169 trees a year
Equivalent to driving 9,101 mi less a year

System Size 9kW

Roof Size Min. space required

644 ft²

Electricity Value Annual Production $1,600 a year

Est. Price

$32,850

Savings from a 9kWthis system

Est. yearly production 12,954 kWh
Est. monthly savings $131
Full payback in 21 years

Environmental Impacts

Reduces CO2 emissions by 4.06 tons a year
Equivalent to planting 187 trees a year
Equivalent to driving 10,059 mi less a year

Current utility bill:

Knoxville solar incentives, tax credit, and rebates

Knoxville has 2 rebates and tax credits that you may be eligable for. Visit the official links for more details to see if you apply.

Sales Tax Credit for Clean Energy Technology

Value:Varies

New devices used in the generation, storage, or distribution of "green energy" in Tennessee may be eligible for state sales/use tax exemptions. Qualifying equipment should use solar, wind, geothermal, or hydrogen fuel cell technology and be installed in a Department of Environment-certified facility. To claim the exemption, the installing contractor should submit application paperwork to the Department of Revenue at the time of purchase. The buyer must then fill out a corresponding form. Approved exemptions will be paid as a refund to the contractor.

Pathway Energy Efficiency Loan Program

Value:Varies

Tennessee's Energy Efficiency Loan Program (EELP) is operated by Pathway Lending, a private non-profit operating in multiple states. Through the program, small businesses, local nonprofits, and local governments may obtain special financing for new renewable energy investments and energy efficiency improvements. Repayment plans last up to six years and are typically based on energy savings at below-market interest. To apply, an organization must submit successful proposals and complete an energy audit. Additional information is available from the Pathway Lending website.

Find out who’s the best installer in other TN cities

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Frequently Asked Questions

As a general rule, unless there are local limitations, the main limitations to the amount of solar panels you can put on your roof are the available space on your roof, your electricity usage, your providers net metering rules, and the limitations of your house hold electrical system.
Based on our research the average price per installed watt is $3.65 in Knoxville. This means for a 10kW system you can expect to pay $36,500 though pricing can vary significantly between installers based on the projects requirements.
Based on a Zillow research study from 2019, home with solar panels sell for roughly 4.1% more.
To generate the most power, solar panels in the United States should face true south as this generally results in the solar panels receiving the most light each day throughout the course of the year. That said, given that energy prices are often variable throughout the day, your installer may recommend you rotate your panels slightly so that the panels will receive more light at the end of the day when energy prices can be more expensive. That said, for most consumers the positioning of solar panels is highly dependent on your home's roof.
Based on our continuously updated database of solar installers, we have found 23 verified solar install companies in Knoxville