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  • Written by
    Max Peterson
  • Fact Checked
  • Updated

With Wilmington's clear skies and below-average rainfall, it's a great area for homeowners and businesses aiming to harness the additional sunlight by buying panels from one of the best solar companies. While going solar comes with upfront costs, local homeowners could ultimately save $740 per kilowatt on their electric bills. A professional company can help you select the best panels to maximize your savings. On this page, we'll showcase Wilmington's premier solar contractors and share insightful advice for your solar journey.

10 Best Solar Companies in Wilmington

Brands are algorithmically curated from a database of local service providers near you. We require a minimum number of Google reviews and average ratings for provider inclusion.

Featured Partner
SunPower Builders Logo
Top Rated

SunPower Builders

3.9/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 15 reviews


80 Pechins Mill Rd, Collegeville, PA 19426

(610) 489-1105

www.sunpowerbuilders.com
Featured Partner
SunPower Logo
Top Rated

SunPower

4.3/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 81 reviews


300 American Metro Blvd #230, Hamilton Township, NJ 08619

(714) 787-3800

us.sunpower.com
TerraSol Energies, Inc. Logo

TerraSol Energies, Inc.

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 103 reviews


64 Watkin Ave, Chadds Ford, PA 19317

(888) 873-9995

www.terrasolenergies.com
SunnyMac Solar Logo

SunnyMac Solar

4.4/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 251 reviews


413 8th Ave, Wilmington, DE 19805

(844) 786-6962

www.sunnymacsolar.com
Star Enrg Logo

Star Enrg

3.8/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 55 reviews


5700 Kirkwood Hwy Suite 106, Wilmington, DE 19808

(302) 397-8917

www.starenrg.com/service-request-page
Open Sky Energy Logo

Open Sky Energy

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 27 reviews


6 Park Ave, Swarthmore, PA 19081

(610) 544-1214

openskyenergy.net
RCL Enterprises Inc. Logo

RCL Enterprises Inc.

4.6/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 40 reviews


29 Alloway Friesburg Rd, Alloway, NJ 08001

(856) 339-4014

www.rclsolar.com
Kaitanna Solar Installation Company Logo

Kaitanna Solar Installation Company

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 34 reviews


34 N Main St, Mullica Hill, NJ 08062

(856) 218-8354

kaitannasolar.com
Advanced Solar Heating And Cooling of MD Logo

Advanced Solar Heating And Cooling of MD

4/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 27 reviews


1649 Elkton Rd, Elkton, MD 21921

(302) 731-1000

sunnydelaware.com
KW Solar Solutions, Inc Logo

KW Solar Solutions, Inc

4.7/5

Ratings are based on our detailed proprietary methodology and review standards.

Based on 23 reviews


94 Childs Rd, Elkton, MD 21921

(302) 838-8400

www.kwsolar.net

Ranking Methodology

Our team used the following criteria to determine the best Wilmington solar companies.

  • Certifications and licenses: Each provider on our list complies with state and city licensing requirements and keeps current with industry best practices. Many of them have served the Wilmington community for a decade or longer.
  • Panel brands and quality: The leading solar companies stay up-to-date with new technology, providing equipment from reliable, innovative manufacturers.
  • Feedback and reviews from customers: Most Wilmington solar contractors have both favorable and unfavorable reviews. However, a good review ratio reflects a company's reliability and responsiveness to issues.
  • Educational programs and business model: Solar technicians must be good teachers. They should utilize their years of experience address your questions on how to maintain your system and optimize its performance.
  • Warranty and service offerings: Solar contractors should stand behind their equipment and services with warranties. We evaluated how each company responds to issues and warranty claims, focusing on promptness and customer satisfaction.

Facts about Wilmington

  • Average Max Temperature:
    62°F
  • Solar Payback Period:
    15 years
  • Average Daily Sunlight:
    55%
  • Homes Powered by Solar:
    2,461
  • Average Annual Energy Bill:
    $1,401
  • Solar Power per Capita:
    91.9%

Benefits of Solar Energy

Solar energy has multiple advantages that will enhance your home for years to come.

  • Reduced carbon footprint: The sun is one of the universe's most abundant clean energy sources, meaning you can lower or beat your home's dependence on "traditional" sources.
  • Better energy independence: Solar panel systems can keep your home functioning through emergencies and blackouts, giving you additional security. You can use your solar energy anytime with optional battery backup.
  • Smaller power bills: Generating some or all of your own energy will save you money on your electric bills long-term. Plus, some states provide net metering programs that make it possible for you to sell your unused energy back to the grid, generating extra credits toward your energy bill.

What Solar Incentives Are Available to Wilmington Homeowners?

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

Incentive Amount:

Solar PV
Residential: $0.70/W
Residenital Leased/PPA systems: Not eligible
Non-Residential (systems less than 6 kW): $0.50/W
Non-Residential (systems 6 kW or larger): $0.70/W
Non-Profit: $1.40/W

Wind
Residential: $0.85/W for first 5 kW, $0.25/W up to 50 kW
Non-Residential: $0.85/W for first 5 kW, $0.25/W up to 50 kW
Non-Profit: $1.75/W for first 5 kW, $1.00/W up to 50 kW

Solar Water Heating (SWH)
Residential: $1/kWh saved
Non-Residential: $1/kWh saved
Non-Profit: $2/kWh saved

GeoThermal Heat Pumps
Residential: $800/ton (first 2 tons), $700/ton (over 2 tons)
Non-Residential: $800/ton (first 2 tons), $700/ton (over 2 tons)
Non-Profit: $1,000/ton (first 2 tons), $800/ton (over 2 tons)

How To Choose the Best Solar Company in Wilmington

The cost and efficiency of solar panels often depend on which company installed them. Make your choice based on the following essential elements.

Licensing and Training

Delaware treats solar installation no differently from any other electrical work. Solar contractors must be licensed electricians, and the government recommends they apply for certification from the North American Board of Certified Energy Practitioners (NABCEP) on top of their license. Look for private accreditations from the North American Board of Certified Energy Practitioners (NABCEP), one of the solar industry's most credible trade groups. Its program includes certifications for both solar photovoltaic and water heating installers.

Cost of Solar Panels in Wilmington

Your solar panels' style will affect how much energy you can produce. Monocrystalline panels are among the highest quality and cost the most but perform the best. Polycrystalline panels generate less, but they're a great traditional option for low budgets. Thin-film panels have a low cost and are excellent for non-traditional roofs, but aren't recommended for large home installations.

You can also add battery backups and electric vehicle (EV) chargers. These will increase your total installation cost, but they can enhance your solar system's efficiency. Not all solar contractors include these additional features, so look for a contractor that installs them if it's important for you.

Generally speaking, it costs about $15,450 for a five-kilowatt solar array in Wilmington. This table shows more specific costs for different solar panel types and system components in your area.

Solar Panel CostAverage Cost
Solar Monocrystalline$1,146.07
Solar Polycrystalline$893.94
Thin-Film$522.61
Solar Battery$733.49
Solar Home EV Charger$2,750.57

Financing Solar Energy in Wilmington

There are many ways to pay for a solar energy system, and the right one will reduce your expenses. A few of the most common options include power purchase agreements (PPAs), leases, loans, and cash payments. Though it requires a large up-front payment, cash is the most affordable choice because it doesn't accrue interest and qualifies you for incentives. Solar loans are the next best option. As with a car or home loan, you'll pay a monthly rate towards system ownership, including interest. You can still apply for money-saving solar incentives, and depending on your lender, you could put as little as $0 down. Solar leases allow you to pay a monthly fee to rent your panels, while a PPA lets you pay a fluctuating rate based on only the energy you use. We generally advise against these options since you will not have ownership of your system and are disqualified from solar incentives, but they might be appropriate in certain circumstances. We advise working with a company that offers multiple financing options. Talk to each consultant about what's available, and get more than one estimate for the best odds of keeping within your financial plan.

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

You can claim a 26% federal solar tax credit from the IRS for new residential solar systems purchased before 2032. Additionally, utilities and local governments may have their own financing plans and rebates that could reduce your total cost even more.

Solar System CapacityEstimated Payback period
1 kW2.7 years
2 kW5.5 years
5 kW13.7 years
10 kW27.5 years

Frequently Asked Questions about Solar in Wilmington

Sources

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