15 Best Solar Companies in Wilmington, DE (2025 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in Wilmington based on:

  • Customer review scores
  • Service area for Wilmington, DE
  • Company policies and services offered
  • Accreditations and certifications

Average Wilmington homeowner saves $1,192/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Updated January 24, 2025

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in Wilmington

As a homeowner or business owner in Wilmington, you may be considering switching to solar and curious about the best solar companies in your area. Solar could be a great choice since it comes with a lot of perks. With high levels of average daily sunlight in Wilmington, the solar industry is doing fairly well. An overlooked driver of this has been Delaware's statewide incentives that help with residential and commercial solar projects.


The cost of installing solar panels can vary substantially based on your home’s setup and your household energy usage.To get free quotes from the top solar companies in Wilmington, click the "get quote" button below.

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EcoWatch Rankings for Solar Companies in Wilmington

Best Local Installer
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EcoWatch Rating

5.0/5

TerraSol Energies, Inc.

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: https://www.terrasolenergies.com/
Address: 64 Watkin Ave, Chadds Ford, PA 19317
Phone: 8888739995
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Kaitanna Solar Installation Company

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Consultation
  • Service icon Battery Storage

Website: https://kaitannasolar.com/
Address: 34 N Main St, Mullica Hill, NJ 08062
Phone: 8562188354
Outstanding Local Installer
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EcoWatch Rating

5.0/5

MACK Solar and Roofing

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance
  • Service icon Financing Assistance

Website: http://macksolarandroofing.com/
Address: 521 Harrison Ave, Oaklyn, NJ 08107
Phone: 8566840653
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Impact Solar LLC

  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Financing Assistance

Website: https://impactsolarnj.com/
Address: 202 Glenwood Ave, Haddonfield, NJ 08033
Phone: 8669264493
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Exact Solar

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Cleaning and Maintenance

Website: https://exactsolar.com/
Address: 82 Walker Ln, Newtown, PA 18940
Phone: 2156218353
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Sun Up Zero Down

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance
  • Service icon Consultation
  • Service icon System Decommissioning

Website: http://sunupzerodown.com/
Address: 6105 W Jersey Ave STE 3, Egg Harbor Township, NJ 08234
Phone: 8563594786
Outstanding Local Installer
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EcoWatch Rating

4.9/5

RCL Enterprises Inc.

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Panel Installation
  • Service icon Consultation

Website: https://www.rclsolar.com/
Address: 29 Alloway Friesburg Rd, Alloway, NJ 08001
Phone: 8563394014
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Finray Solar

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance
  • Service icon Community Solar Projects

Website: http://www.finray.solar/
Address: 29 Bala Ave, Bala Cynwyd, PA 19004
Phone: 4844348179
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Energy Defenders

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

Website: http://theenergydefenders.com/
Address: 11 S 3rd St, Hammonton, NJ 08037
Phone: 6092707072
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Lumina Solar PA

  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Grid-Tied Solar System
  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Skilled Repairs

Website: https://www.luminasolar.com/
Address: 1004 Gravel Pike, Hereford Township, PA 18070
Phone: 8009716118
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Public Service Solar, LLC

  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Prompt Service Delivery
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Permit Assistance

Website: https://www.publicservicesolar.com/
Address: 1631 S Olden Ave, Trenton, NJ 08610
Phone: 8882702884
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Advanced Renewable Solutions - Solar 4 South Jersey

  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: https://solar4southjersey.com/
Address: 259 E Browning Rd, Bellmawr, NJ 08031
Phone: 8569000669
Outstanding Local Installer
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EcoWatch Rating

4.8/5

PosiGen

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Panel Installation
  • Service icon Battery Storage
  • Service icon Permit Assistance
  • Service icon Cleaning and Maintenance

Website: https://www.posigen.com/
Address: 400 Davis Dr, Plymouth Meeting, PA 19462
Phone: 5702184772
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.8/5

Solar Energy World

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: https://www.solarenergyworld.com/
Address: 100 Twinbridge Dr, Pennsauken Township, NJ 08110
Phone: 8668564580
Outstanding Local Installer
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EcoWatch Rating

4.8/5

Bright Eye Solar

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Cleaning and Maintenance

Website: https://brighteyesolar.com/
Address: 1200 Corporate Blvd #16, Lancaster, PA 17601
Phone: 7172078449

Methodology: How We Ranked the Best Solar Companies in Wilmington

EcoWatch's solar experts analyzed each solar company in Wilmington 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 Wilmington


Below are some the criteria we examined specifically for Delaware 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 Wilmington

The cost of installing solar panels has gone down significantly over the past few years, but it’s still a significant investment for most homeowners.The cost and possible savings vary depending on some important factors such as:

  • The make and model of solar panels you want to get: More efficient models cost more, so that will influence your budget for your solar project.
  • Incentives: The federal solar investment tax credit currently lets you lower your taxes by 0 of the project cost. Your state and even local utility companies may also have incentives and rebates that you can benefit from. In addition, you can save about $14,000 over 20 years on your utility bills, without incentives.
  • How much energy your home consumes: Households that use a lot of power each month may need more solar panels and, consequently, be more expensive, but will also save more on their energy bills over time.
  • Your city: This affects how much sunlight your roof receives, which helps determine how many panels you need.

So are solar panels worth it? Whether you hope to decrease your electricity costs, greenhouse gas emissions or both, solar panels are a good investment for many Wilmington homeowners.

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Solar Incentives in Wilmington

Although solar power is typically a large investment, it can save you much money over many years due to lower utility bills and government incentives.These incentives typically take the form of cash rebates, tax credits and/or performance-based incentives. They can lower the cost of installing solar panels by 0, upwards of 50% in some cases. For detailed information about local incentives, visit our article on solar incentives.

Environmental Impact of Switching to Solar in Wilmington

Making the switch to solar power is a great way to do your part for a more eco-friendly future.But you may be wondering – how much exactly can you help by going solar? Everyone can help save the environment by switching to solar energy, but homes that use a lot of energy will have an even greater impact.When you go solar, your carbon dioxide emissions can be lowered by about 60 pounds every year. For those who care about the environment, the upfront cost of solar is a small price to pay for reducing your carbon footprint.

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EcoWatch's Wilmington, DE Solar Company Rankings FAQs

Which solar panel installer is the best near me?

The best local solar company in Wilmington is TerraSol Energies, Inc., with a rating of 5.00 stars.

Are solar panels really eco-friendly?

Solar panels can be detrimental for the environment when manufacturers use toxic chemicals in the construction. Chemicals can make solar panels difficult to dispose of safely once they’ve reached the end of their lifespan. Making solar panels requires a lot of energy as well. The energy payback period is about 1 to 4 years.

How long does it take to see a return on your investment after buying solar panels?

The average payback period for solar panel installation is about 14.5 years, but the exact period is influenced by local electricity costs, incentives and net metering programs.

What is the best kind of solar panel?

There are three main types of solar panels: monocrystalline, polycrystalline and thin-film. In terms of efficiency and price, monocrystalline has the highest for both, then polycrystalline, and then thin-film. The best choice for you is highly influenced by the layout of your roof, how much you're willing to spend and how much energy generation you want.

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.