Best Solar Companies in Delaware

We compared 67 brands and chose the top solar energy companies

    • SunPower
    • ShopSolar

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      Best Solar Companies in Delaware

      If you've been thinking about going solar in Delaware but aren’t sure where to start, you’re not alone. ConsumerAffairs is here to help you compare your options and get the best deal. 

      Our picks may be Authorized Partners who compensate us — this does not affect our recommendations or evaluations but may impact the order in which companies appear. Read our full methodology for all the details on how we choose our top picks for this guide.

      Why trust ConsumerAffairs?
      • Our recommendations are based on what reviewers say.
      • 4,477,293 reviews on ConsumerAffairs are verified.
      • We require contact information to ensure our reviewers are real.
      • We use intelligent software that helps us maintain the integrity of reviews.
      • Our moderators read all reviews to verify quality and helpfulness.

      Compare the best solar companies in Delaware

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      The best solar companies reviewed


      Buyer's Choice Award Winner
      Max. panel efficiency
      Payment options
      Cash, loan, lease
      25 years
      Year founded
      2x Award Winner
      Selected for having one of the highest satisfaction rates for Best Customer Service and Best for Installation

      SunPower is a top national company with high-efficiency solar panel technology. We like that its SunVault storage battery is excellent for maximizing energy savings during peak rate times.

      What really sets SunPower apart, though, is its seamless solar panel installation process. Local representatives evaluate your home energy needs, design a custom system, help secure any necessary permits and work out financing options.

      The company typically works with local installers, and then SunPower’s monitoring app lets you track the system’s performance once the project is complete.

      SunPower benefits

      • 35+ years of experience
      • Comprehensive 25-year warranty
      • Battery storage options
      • Ongoing support

      SunPower’s “Complete Confidence Warranty” covers your entire solar energy system for 25 years, including the panels, inverter, racking and monitoring. The company repairs or replaces equipment at no cost to you (including labor and shipping).

      Financing options

      • Loans: Qualified customers can find reasonable rates with no money down. All financing approvals and processing happen through the mySunPower online portal.
      • Leases: Customers pay a monthly fee to use solar panels that SunPower owns. SunPower reimburses you if your solar system doesn’t perform as guaranteed. You can transfer the agreement to a new buyer if you sell your home.

      SunPower is a reliable solar company with comprehensive services, but it’s not the cheapest option. Your upfront costs tend to be a little higher than other companies. After all, you get what you pay for.


      Buyer's Choice Award Winner
      Max. panel efficiency
      Payment options
      Cash, loan
      Year founded
      1x Award Winner
      Selected for having one of the highest satisfaction rates for Best Customer Service

      ShopSolar is an awesome place to buy solar equipment for do-it-yourself projects. We like that ShopSolar has a nice selection of equipment, fast deliveries and good communication.

      You can find new and used solar panels, solar storage batteries, inverters, charge controllers, cabling and hardware, mounts and racks — everything needed for an off-grid or hybrid setup. It’s great if you want to install solar on homes, RVs or outbuildings.

      The online company sells custom solar kits and stocks brands like Panasonic, REC, Renogy, Canadian Solar and EcoFlow. Orders typically arrive within 10 business days.

      ShopSolar benefits

      • Free shipping
      • Price-match guarantee
      • 30-day return policy
      • Lifetime customer support

      ShopSolar is an authorized distributor of all the brands it sells, so any solar equipment you buy from the company is covered by the individual manufacturers’ warranties. If you run into a warranty issue, reps can help you contact the equipment manufacturer.

      Payment options

      • Online payments: ShopSolar accepts Visa, Mastercard, American Express, Discover, PayPal, Apple Pay, Google Pay, Venmo, Shop Pay and Diners Club International.
      • Financing: ShopSolar partners with Affirm on financing. Customers can make payments every two weeks or once a month for up to 36 months. Rates range from 0% to 36% APR.

      Some customers experienced problems with their purchases, such as damaged or faulty equipment, but ShopSolarKits generally resolved these issues with refunds or replacements.

      The important thing to keep in mind is that ShopSolar doesn’t offer professional installation services. So, it’s best to know a little about solar panels and electrical work. Otherwise, you might get frustrated with the process or install something incorrectly.

      » DIY SOLAR PANELS: Pros, cons and installation guide

      Read more solar company reviews

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        Delaware solar panel buyers guide

        Our team has talked to thousands of solar customers across the country — here’s what to expect and what to look out for.

        Key insights

        • Professional solar panel installation can cost anywhere from $10,000 to $30,000 or more.
        • The federal solar investment tax credit (ITC) is the most significant way to lower the cost of buying solar panels. Delaware has additional financial incentives to make going solar more affordable.
        • Leasing your solar equipment can minimize the initial cost. But you won’t be eligible for the federal solar ITC because you won’t own the system.

        How much does it cost to install solar panels in Delaware?

        Solar panel costs in Delaware are comparable to the national average of around $18,000 for a 6-kilowatt system (that price drops to $12,600 after factoring in the full federal solar investment tax credit).

        The size of your system plays a big role in how much it costs overall. It also depends on how you pay, whether you want a solar storage battery, if you need to replace your roof first and other factors.

        » COMPARE: Solar costs in other states

        Available solar incentives

        The federal solar investment tax credit (ITC) is the most significant way to make installing panels more affordable. The ITC is a federal income tax credit equal to 30% of your solar power system’s total cost, including equipment, labor and permits. Delaware homeowners may also take advantage of solar renewable energy credits (SRECs), rebates and grant programs.

        » EXPLORE: Delaware solar incentives

        How net metering works Delaware

        Net metering lets Delaware homeowners get credits for extra electricity their solar panels generate. Home solar owners in Delaware earn money from solar renewable energy credits (SRECs). For every 1,000 kilowatt-hours of solar energy your panels produce, you get 1 SREC.

        These credits can then be sold to utility companies to help them meet renewable energy goals. Selling SRECs provides added bill savings, including offsetting higher winter electric costs using excess solar electricity generated in the summer.

        How to choose a solar installation company

        The best solar companies have a few things in common: high-efficiency equipment, transparent contract terms and long warranties (at least 10 to 25 years). Here’s what else to look for.

        • Good reputation: Research the company's track record and read reviews. Look out for red flags — complaints about misleading sales tactics, equipment failures, billing issues and lack of communication are common themes in negative solar company reviews.
        • Long time in business: Look for companies with plenty of experience installing solar panels in Delaware. It makes it easier to navigate regulations, permits and available financial incentives.
        • Comprehensive service: Consider if you want a solar storage battery, electric vehicle (EV) charger or a monitoring system to ensure optimal output. It’s also smart to ask about critter guards in Delaware.
        • Free consultations: Get multiple quotes from different solar companies to compare prices and services. Be cautious of companies that provide significantly lower quotes than others — this may indicate lower quality.

        » TIPS: Getting the best solar quotes


        Are solar panels worth it in Delaware?

        For many people, solar panels are worth it for the long-term cost savings and environmental benefits. For others, it’s more about gaining energy independence. Delaware has a good climate for solar panels, and several financial incentives can help make the upfront investment more affordable.

        How are solar costs trending in Delaware?

        The cost to go solar in Delaware has fallen 42% over the last 10 years, according to the Solar Energy Industries Association.

        Is my HOA allowed to restrict solar panels in Delaware?

        Homeowners associations have some authority on how you install solar in Delaware. Still, their restrictions must not “significantly increase the cost of the system or significantly decrease its efficiency or specified performance,” according to Delaware law.

        What’s the difference between a solar broker and a solar installer?

        A solar broker is a middleman or intermediary who helps connect homeowners with solar installation companies. A solar installer specializes in designing, procuring and installing solar panels and related components.

        Ultimately, deciding between a solar broker and a solar installer depends on how much you want to be involved in the process. A broker can be helpful if you value convenience. If you want more control and potentially lower costs, it’s best to work directly with a solar installer.

        Should I replace my roof before installing solar panels?

        As a rule of thumb, if your roof is more than 10 years old, consider fixing it before going solar. Installing solar panels on an old roof might mean you have to remove the panels, replace your roof and then reinstall the panels again. This will cost around $5,000 for a 19-panel setup.

        » SHOULD YOU: Replace your roof before going solar?

        Methodology: How we picked the best solar companies in Delaware

        The ConsumerAffairs Research Team objectively evaluates solar providers to highlight those best equipped to meet most homeowners' needs. To choose our top picks for this guide, we started with a list of popular providers. First, we narrowed it down to the ones available in Delaware. We then weighted several key features to get our final rankings:

        Reviews, ratings and testimonials: 50%
        We analyzed verified customer reviews and ratings to gauge real-world satisfaction.

        Equipment selection: 20%
        We evaluated each company’s selection of solar panels, storage batteries and inverters. Those with proprietary technology or a wide equipment selection from trusted brands ranked highest.

        Warranties: 20%
        We compared product and craftsmanship warranties as well as performance guarantees. All of our top picks have warranties that last at least 10 to 25 years.

        Overall reputation: 10%
        We considered each company's history, mission and value. Companies with generally positive feedback on our site scored highest in this aspect.

        To recap, our top picks for the best solar companies in Delaware:

        • Our pick for professional installation: SunPower
        • Our pick for DIY projects: ShopSolar

        Guide sources

        ConsumerAffairs writers primarily rely on government data, industry experts and original research from other reputable publications to inform their work. Specific sources for this article include:

        1. EnergySage, “Delaware solar panels: local pricing and installation data.” Accessed Jan. 21, 2024.
        2. DSIRE, “Delaware Solar Programs.” Accessed Jan. 21, 2024.
        3. The Delaware Code Online, “Title 25 Chapter 3.” Accessed Jan. 21, 2024.
        4. Solar Energy Industries Association, “Delaware Solar.” Accessed Jan. 21, 2024.

        Not sure how to choose?

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