12 Best Solar Companies in Wilmington, DE (2023 Reviews)
We analyzed over 1500 solar companies in the nation,
and have selected the top 12 in Wilmington based on:
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Customer review scores
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Solar installers near you
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Company policies and services offered
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Accreditations and certifications
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Updated March 14, 2023
Why you can trust EcoWatch
Best solar companies in Wilmington
Getting the right solar panel installation company for your house is an important decision, but it's one that can pay off big in Wilmington. Solar power isn't just good for the Earth — your wallet will be better off too. Once you switch to solar power, you can save an average of $14,000 over 20 years, and this doesn't even include incentives.
In this article, we'll give you a list of the top Wilmington solar installers so you can make the best choice for your home's sustainable energy needs. If you want to receive free, no-obligation quotes from the best Wilmington solar installers, you can click the button below to learn more.
Best National Provider
SunPower
- Most efficient panels on the market
- National coverage
- Cradle to Cradle sustainability certification
- Great warranty coverage
- Expensive
- Customer service varies by local dealer
Best Technology
Tesla Energy
- Price-match guarantee
- Sleek, efficient, and durable solar panels
- Best solar battery on the market
- Some reported issues with customer service
- Customer service varies by local dealer
Solar Veteran
Trinity Solar
- Many financing options
- Family-owned and -operated
- Makes charitable contributions
- Limited service area
- Relatively short workmanship warranty
EcoWatch Rankings for Solar Companies in Wilmington

GreenBrilliance
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Licensing and credentials transparency
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More transparent pricing than competitors
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Educational sales approach
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NABCEP-certified technicians
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Assists with maximizing rebate
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Excellent reputation
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Limited information available on website
Services Offered
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Solar Batteries
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Solar Panels
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Commercial Solar Services

Power Marketing Group, LLC
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Educational sales approach
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More transparent pricing than competitors
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Custom system designs
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Panels

EcoGen America
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Offers a free quote process
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Educational sales approach
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Assists with maximizing rebate
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Solar Panels
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Commercial Solar Services

Colgan Solar
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More transparent pricing than competitors
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Educational sales approach
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Can browse portfolio on website
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NABCEP-certified technicians
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Assists with maximizing rebate
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Commercial Solar Services
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Solar Panels

Solar States LLC
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More transparent pricing than competitors
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Offers a free quote process
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Educational sales approach
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Can browse portfolio on website
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NABCEP-certified technicians
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Limited information available on website
Services Offered
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Solar Batteries
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Maintenance and Repairs
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Commercial Solar Services
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Solar Panels

SunRayzor
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More transparent pricing than competitors
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Offers a free quote process
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Educational sales approach
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Can browse portfolio on website
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Assists with maximizing rebate
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Roof Shingles
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Solar Panels

Alien Fuel
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NABCEP-certified technicians
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Educational sales approach
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Assists with maximizing rebate
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Panels

Power-On
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Licensing and credentials transparency
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More transparent pricing than competitors
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Educational sales approach
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NABCEP-certified technicians
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Assists with maximizing rebate
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Panels

Maryland State Solar, LLC
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Educational sales approach
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Excellent reputation
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Limited information available on website
Services Offered
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Solar Panels

Solair, LLC
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Educational sales approach
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Licensing and credentials transparency
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Custom system designs
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Limited information available on website
Services Offered
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Solar Batteries
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Commercial Solar Services
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Solar Panels

Gordian Energy Systems
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Can browse portfolio on website
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Educational sales approach
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More transparent pricing than competitors
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Excellent reputation
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Limited information available on website
Services Offered
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Commercial Solar Services
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Solar Roof Shingles
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Solar Panels

American Design and Build
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Offers a free quote process
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Educational sales approach
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Excellent reputation
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Limited information available on website
Services Offered
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Maintenance and Repairs
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Solar Panels
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Solar Roof Shingles
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Commercial Solar Services
Solar Company Ranking Methodology
Click here to see a more detailed overview of our solar company ranking methodology.
The Cost and Benefits of Solar in Wilmington
The cost of putting up a solar panel system has decreased greatly over the past few years, but it's still a large investment for most homeowners. The cost and possible savings vary depending on a few key factors such as:
- Your city: This influences the average daily sunlight your roof gets, which helps determine how many panels you need.
- Incentives: Something that can make your solar project cost less is the solar investment tax credit (ITC), which is a tax credit that lets you deduct from your taxes a percentage of the project cost. You can also save a decent amount of money on your power bills, which can give you an average of $14,000 of savings over 20 years.
- How much energy you use: If your home needs to use a lot of energy, you'll benefit more from installing solar panels.
- Choice of solar panels: The type of solar panels you choose will affect your total cost. High-efficiency monocrystalline panels will cost more upfront but can also save you more money over the lifetime of your system. If space isn't a constraint for your project, you can go with a higher number of more affordable panels.
As a result of solar panels now being cheaper than ever as well as various solar incentives, they are a worthwhile investment for many homeowners.
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Solar Incentives in Wilmington
One of the great things about installing a solar panel system is earning incentives from the government. On top of the federal solar investment tax credit, there are also some local programs, which in almost all cases, stack with the federal incentive, so you get to save even more. Take a look at our article on solar incentives to find out what incentives are available to you.
Environmental Impact of Switching to Solar in Wilmington
One of the most compelling reasons to tap into solar power is to cut your dependence on traditional energy sources like burning fossil fuels, which are harmful for the environment. Many homeowners might be wondering how much exactly they can impact the environment by switching to solar in Wilmington, though. In a city like Wilmington where energy use is rather high, making the switch to solar power is a good idea for households who care about the planet. In fact, if you install solar panels, you could reduce your carbon dioxide emissions by about 60 pounds each year. The good things about solar power are plentiful — just like solar power is! That's why so many people have been happy with making the switch to solar.
Best National Provider
SunPower
- Most efficient panels on the market
- National coverage
- Cradle to Cradle sustainability certification
- Great warranty coverage
- Expensive
- Customer service varies by local dealer
Best Technology
Tesla Energy
- Price-match guarantee
- Sleek, efficient, and durable solar panels
- Best solar battery on the market
- Some reported issues with customer service
- Customer service varies by local dealer
Solar Veteran
Trinity Solar
- Many financing options
- Family-owned and -operated
- Makes charitable contributions
- Limited service area
- Relatively short workmanship warranty
EcoWatch's Wilmington, DE Solar Company Rankings FAQs
Which solar power company is the best in Wilmington?
In Wilmington, GreenBrilliance is the best local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're looking to install solar panels on your roof.
Are solar panels actually environmentally friendly?
Solar panels can be bad for the environment when manufacturers use toxic chemicals when they're made. Chemicals can make solar panels difficult to recycle safely once they've reached the end of their lifespan. Solar panel manufacturing requires a lot of energy as well. The energy payback period is about 1 to 4 years.
How long does it take for solar to pay for itself?
Solar panels generally pay for themselves in about 12.1 years, but your solar payback period will vary based on your utility costs. The higher your typical power bill, the faster your solar panel system will recoup your installation costs.
What is solar panel capacity and how much do I need for my house?
Solar panel capacity is rated based on the amount of power they generate under standard testing conditions. Since each panel can generally produce about 250 to 400 watts per hour, the average house will need 20 to 35 panels.
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.
Company research was conducted by Melissa Smith and Karsten Neumeister. Local data analysis was conducted by James Savino. See something we missed or could do better? Email the editor.