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Best 5 Solar Companies in Louisville, KY

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Written By Max Peterson|Last Updated: April 18, 2024

With Louisville's clear skies and little rainfall, it's an ideal area for families and businesses seeking to harness the added sunlight by buying panels from one of the best solar installers. While embracing solar power comes with upfront costs, local homeowners could ultimately save $860 per kilowatt on their electric bills. A professional installation team can help you select the best panels to maximize your savings. In this guide, we'll showcase Louisville's best solar installers and offer advice for your company choice, so you can find the perfect one for your residence.

Best High-Efficiency System
  • Builds custom, high-efficiency solar systems suited to each home
  • Extensive coverage area throughout the country
  • Offers energy storage and EV charger add-ons
Most Reputable
  • Offers high-efficiency panels and storage options
  • Provides unique in-house financing options
  • Recognized as one of the most reputable solar companies

Top Louisville Solar Companies

Redemption Solar and Roofing Logo

Redemption Solar and Roofing

Based on 45 customer reviews.

Services Offered

Battery StoragePanel Installation


  • Free quotes
  • Informative resources
1700 Ups Dr Ste 208, Louisville, KY 502-206-4733 redemptionsolarandroofing.com
Solar Energy Solutions Logo

Solar Energy Solutions

Based on 21 customer reviews.

Services Offered

Battery StorageFinancing AssistanceTesla PowerwallPanel Installation


  • Prompt service delivery
  • Free quotes
  • Clear pricing policy
10370 Bluegrass Pkwy, Louisville, KY 502-237-7411 sesre.com
EightTwenty - Charlestown Logo

EightTwenty - Charlestown

Based on 19 customer reviews.

Services Offered

Panel Installation


  • Reliable customer support
  • Clear pricing policy
  • Free quotes
97 Industrial Way, Charlestown, IN 812-925-5222 eighttwenty.com
Daily Green Power - Solar Panel Installation Company Logo

Daily Green Power - Solar Panel Installation Company

Based on 62 customer reviews.

Services Offered

Tesla PowerwallOff-Grid Solar SystemsSolar CarportsFinancing AssistanceBattery StoragePanel Installation


  • Informative resources
  • Free quotes
  • Reliable customer support
1105 Julianna Ct Suite 6, Elizabethtown, KY 270-506-3625 dailygreenpower.com

Ranking Methodology

Our team has thoroughly vetted dozens of solar installers near Louisville, focusing on the following criteria:

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Facts about Louisville
Average Max Temp:64°F
Solar Payback Period:11.4 years
Average Daily Sunlight:54%
Homes Powered by Solar:1,224
Average Annual Energy Bill:$1,469
Solar Power per Capita Percentile:48.0%

Expert Tips By

This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

Benefits of Solar Energy

Solar energy offers numerous advantages that will enhance your home for years to come.

  • Reduced carbon footprint: Using clean solar power reduces your dependence on fossil fuels, which release greenhouse gases that damage the environment.
  • Lowered energy bills: You can skip the premium cost of grid-tied power by creating some electricity at home. Plus, many states offer net metering which can allow you to sell your unused energy back for credits on your bill.
  • Better energy independence: Solar panel systems can keep your home powered through blackouts and emergencies. You can use your solar energy anytime with optional battery storage.

What Solar Incentives Are Available to Louisville Homeowners?

Governments and power companies often incentivize homeowners for embracing solar. Here are some of the rebates, tax credits or other programs you could qualify for.

Incentive Type: Personal Tax Credit

Website: ecowatch.com

Incentive Amount:

30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

How To Choose the Best Solar Company in Louisville

Choosing a company is the first step toward a well-oiled and valuable solar energy system. Consider all of these aspects in your business search.

Licensing and Training

Home solar energy contractors in Kentucky don't have to be licensed electricians or plumbers. However, a plumber or electrician licensed by the Commonwealth must be on the team to retain building permits and connect the system to meters and utility grids. You should also visit a company's website to learn about its private credentials. Two of the most prestigious are the PV Installation Professional and Solar Heating Installer certificates, backed by the North American Board of Certified Energy Practitioners (NABCEP). Some companies don't publish this information online, so you should also ask your estimator about them.

Cost of Solar Panels in Louisville

The style of solar panels you purchase decides how much electricity you can produce. Monocrystalline panels and high-quality and give you the best performance but cost more upfront. Polycrystalline panels produce less power, but they're worth it if you want a traditional panel style without the high cost. Thin-film panels aren't meant for large home installations, but they're excellent for small projects like sheds and RVs.

You can also add battery backups and electric vehicle (EV) chargers. These will increase your total installation cost, but they can improve your solar system's performance. Not every solar company includes these optional components, so look for a contractor that sells them if it's essential for you.

If you're a resident of Louisville and are looking into a five-kilowatt solar energy system, you could expect to pay about $18,250 for parts and installation. See more information on specific component and solar panel costs in the table.

Solar Panel CostAverage Cost
Solar Monocrystalline$1,147
Solar Polycrystalline$894
Solar Battery$734
Solar Home EV Charger$2,752

Financing Solar Energy in Louisville

Solar providers use multiple different financing options to lower your costs and increase your savings. Though some providers offer unique payment plans, the most common are solar leases, cash payments, power purchase agreements (PPAs) and solar loans. Most solar experts recommend paying cash or using a solar loan. Cash payments require a large up-front sum, but they help you avoid paying interest, grant you system ownership, and qualify you for cost-saving solar incentives. Solar loans have the same benefits, though you'll pay more in total due to interest and fees. Similar to a car or home loan, you'll pay a set monthly rate with as little as $0 down. Solar leases involve paying a set monthly rate to use rooftop panels. A PPA (Power Purchase Agreement) allows you to pay a monthly rate determined by the energy you use, as with an electric bill. We usually don’t recommend these two options because you won't own the system and are disqualified from using solar incentives. We advise working with an installer that offers multiple financing options. Ask each representative about what's available, and get more than one estimate for the best odds of keeping within your budget.

The table below lists the average payback periods for different capacities of solar systems in Louisville.

A 26% federal solar tax credit applies to new residential solar equipment purchased through 2032. Further incentives may be available through local governments, usually in the form of rebates and special financing programs.

Solar System CapacityEstimated Payback period
1 kW2.3 years
2 kW4.6 years
5 kW11.4 years
10 kW22.9 years

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Frequently Asked Questions About Solar in Louisville

How much energy and money could I save per year by switching to solar?

Most Louisville homeowners spend about $1,469 on energy each year. Your costs could drop by $860.69 for each kilowatt you generate after you pay off a solar array.

How common is solar energy in Louisville?

Yes, solar energy is becoming increasingly popular in Louisville. Some homes already use solar power on-site or through utility grids, and they're supported by a state solar economy with 1362 jobs and counting.

Should I expect a property value increase after adopting solar power?

Yes, new solar systems lead to higher property values according to the National Renewable Energy Laboratory (NREL.) Homeowners could project a $20 property value increase for each dollar they save on energy. Therefore, $600 in energy savings could increase your home's value by $12,000.

How long does the solar installation process last?

There's no universal answer for how long a solar project might take. Ultimately, it depends on panel style, the permitting and inspection process, local weather, the necessary prework, and system size. Many homeowners can be solar-ready within a couple of months from their initial estimate visit.

What maintenance do my solar panels need, and how often do they need it?

To protect your solar system's performance, inspections and cleanings every six months are usually adequate. In dusty or dry seasons, your panels might need cleanings every one to two months. Your provider can recommend a maintenance schedule. Its team could also do the cleaning for you.

How long does it take to pay back a solar loan in Louisville?

Most Louisville homeowners pay back a solar loan in 14.8 years. You can shorten the payback period by paying off extra loan principal each month.

How can I boost my solar array's performance?

To enhance your solar system's performance, you can try the following steps:
  • optimize the panels' position with your solar installer
  • regularly clean your solar panels
  • upgrade to a more efficient inverter trim or cut down trees in the way of your panels
  • use energy-efficient appliances

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.