5 Best Solar Companies in Louisville, TN (2025 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 5 in Louisville based on:
Customer review scores- Service area for Louisville, TN
- Company policies and services offered
- Accreditations and certifications
Please enter a valid 5-digit zip code!
Average Louisville homeowner saves $1,004/year with solar panels
Why you can trust EcoWatch
Best Solar Companies in Louisville
When deciding on the best solar panel companies, Louisville homeowners have more options than ever before, which can be mind-boggling, but we’re here to make making the switch to solar energy that much easier. One of the advantages of living in Louisville is you have access to many of the best solar panel installation companies in the nation.
In this article, we’ll help you narrow down the top options in your area.To help you understand if solar panels are worth it for your home, you can get a free, no-obligation quote from one of the best solar companies in Louisville by clicking the button below.
EcoWatch Rankings for Solar Companies in Louisville
Lloyd's Electric Service, Inc. - Knoxville
Reliable Customer Support
Limited information available on website
Services Offered
Panel Installation- Cleaning and Maintenance
- Financing Assistance
Carolina Mountain Solar
- Limited information available on website
Services Offered
- Panel Installation
Appalachian Solar and Minisplit
- Informative Resources
- Limited information available on website
Services Offered
- Off-Grid Solar Systems
- Panel Installation
Solar Alliance, LLC
- Reliable Customer Support
- Informative Resources
- Prompt Service Delivery
- Limited information available on website
Services Offered
- Skilled Repairs
- Panel Installation
- Community Solar Projects
Cornerstone Solar South
- Prompt Service Delivery
- Reliable Customer Support
- Clear Pricing Policy
- Limited information available on website
Services Offered
- Panel Installation
- Cleaning and Maintenance
- Financing Assistance
- Consultation
- Battery Storage
Methodology: How We Ranked the Best Solar Companies in Louisville
EcoWatch's solar experts analyzed each solar company in Louisville based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in Louisville
Below are some the criteria we examined specifically for Tennessee solar companies
- Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
- Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
- Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
- Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
- Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
- Availability (10%): The bigger the service area, the higher the company will score.
- Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
- Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.
The Cost and Benefits of Solar in Louisville
We understand that for many homeowners, the decision to invest in solar depends on installation costs.Some main factors that affect how much it will cost to install solar panels on your home and how much money you could save over time include:
- How much energy your home consumes: Homes that consume lots of energy each month may require more solar panels and, as a result, be more expensive, but will also benefit more over time.
- System size and type: Some models are more costly than others, so the one you want can raise or lower your upfront cost. Plus, the more solar panels you need, the more it'll cost.
- Your power bills: This will influence how much you can save. In Louisville, the average resident can save about $1,500 a year on their electricity bills.
- Incentives: Tax-paying citizens who install a solar system this year can save 0 of their overall solar costs by taking advantage of the federal solar investment tax credit. You can also save about $13,000 on your utility bills over 20 years excluding incentives.
Because of solar panels now being cheaper than ever as well as several solar incentives, they are a worthwhile investment for the majority of homeowners.
Solar Savings Calculator for {{ solarcalc.name }}
To see how much you can help the environment and your wallet by switching to solar, try out the calculator below. You can also view our solar panel cost guide for Louisville, TN.
| {{ solarcalc.time_period|number:0 }} -year savings | {{ solarcalc.total_savings()|currency }} |
| Estimated cost | {{ solarcalc.array_cost() | currency }} |
| Estimated incentives | {{ solarcalc.incentive_savings() | currency }} |
| Payback period | {{ solarcalc.payback_period()|number:1 }} years |
| CO2 emissions prevented | {{ solarcalc.CO2_total()|number:0 }} lbs |
| Miles driven equivalent | {{ solarcalc.CO2_total()/0.78|number:0 }} mi |
Switching to solar in {{ solarcalc.name }} can save you {{ solarcalc.total_savings() | currency }} over the course of {{ solarcalc.time_period|number:0 }} years.
Solar Incentives in Louisville
Since solar power is a cleaner source of energy than burning fossil fuels, there are several government incentives available to encourage people to make the switch.When you install solar panels on your house, you can take advatage of the federal tax credit, or ITC. This credit currently lowers your tax bill by 0 of the cost of your solar panels. Plus, there may often be some state and city incentives that you can use to further cut back on the cost of solar of solar panels. Check out our article on solar incentives to find out what incentives you can benefit from.
Environmental Impact of Switching to Solar in Louisville
An important reason so many are considering installing solar panels is to help lower their environmental impact.Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Louisville, though. One thing that can severely affect your carbon footprint is your commute time and how much you drive generally. If you install solar panels and drive an electric car, you can greatly decrease your carbon dioxide emissions by charging your car at home.Because solar panels don’t release CO2 emissions into the atmosphere when generating electricity, they’re a good alternative to traditional energy sources. In fact, you could look forward to lowering your carbon dioxide emissions by about 0 pounds each year. For homeowners who are worried about the environment, the upfront cost of solar is a small price to pay for offsetting your carbon emissions.
EcoWatch's Louisville, TN Solar Company Rankings FAQs
Which solar installation company is the best in Louisville?
The highest-rated local solar company in Louisville is Lloyd's Electric Service, Inc. - Knoxville, with a rating of 4.70 stars.
What are some of the major advantages and disadvantages of going solar?
A few of the biggest pros are that it lowers your electricity bills, it’s eco-friendly, and it provides a good return on your investment (ROI). The most notable cons are that solar panels don’t work as well when there’s limited direct sunlight, they cost a lot upfront and solar panels aren’t always aesthetically pleasing.
Are solar panels worth it?
Solar panels can be a good investment for most homeowners, but admittedly, they might not be worth it for everyone. If your home doesn't get a lot of direct sunlight or your power bills are already pretty low, solar panels might not be for you.
When is the best time of year to install solar panels?
You can put up solar panels whenever it's convenient for you, but consider doing so in the winter when the demand is less. With fewer homeowners going solar, you could potentially see faster installation times and more savings.
Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert’s opinion on the top solar companies featured here, follow this link.