15 Best Solar Companies in Hauppauge, NY (2025 Reviews)

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

  • Customer review scores
  • Service area for Hauppauge, NY
  • Company policies and services offered
  • Accreditations and certifications

Average Hauppauge homeowner saves $1,842/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 Hauppauge

As a homeowner or business owner in Hauppauge, you may be interested in switching to solar and wondering about the best solar companies in your city. Solar could be a great choice since it has lots of perks. Because solar panels generate their own power, they can greatly lower your electricity bill each month, if not fully eliminate it. In fact, you could look forward to about $22,000 of savings over 20 years.


To help you comb through the huge number of Hauppauge solar installers, we’ve narrowed down a list of the top ones.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 Hauppauge by clicking the button below.

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EcoWatch Rankings for Solar Companies in Hauppauge

Best Local Installer
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EcoWatch Rating

5.0/5

Leviathan Solar

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

Services Offered

  • Service icon Panel Installation

Website: https://leviathansolar.com/
Address: 1993 Pond Rd, Ronkonkoma, NY 11779
Phone: 6315532732
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Harmony Energy

  • Pros icon Free Quotes
  • 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 Consultation
  • Service icon Panel Installation

Website: http://www.harmonyenergy.org/
Address: 80 Orville Dr, Bohemia, NY 11716
Phone: 6312441679
Outstanding Local Installer
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EcoWatch Rating

5.0/5

GreenLeaf 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 Solar Carports
  • Service icon Panel Installation

Website: https://gogreenleafsolar.com/
Address: 11 Technology Dr, Setauket- East Setauket, NY 11733
Phone: 6315091747
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Marcor Solar

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

Services Offered

  • Service icon Panel Installation
  • Service icon Skilled Repairs
  • Service icon Financing Assistance

Website: https://www.marcorsolar.com/
Address: 135 Dale St, West Babylon, NY 11704
Phone: 6313549106
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Precision Solar

  • 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 Financing Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Permit Assistance
  • Service icon Panel Installation

Website: https://precisionsolarenergy.com/
Address: 445 Hamilton Ave #1102, White Plains, NY 10601
Phone: 9142205877
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Advanced Solar Solutions

  • 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 Consultation

Website: http://advancedsolarny.com/
Address: 14134 71st Ave, Queens, NY 11367
Phone: 3474558430
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Solar Pro

  • 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 Permit Assistance
  • Service icon Consultation

Website: https://www.solarprony.com/
Address: 139 Stuyvesant Ave, Brooklyn, NY 11221
Phone: 7189627699
Outstanding Local Installer
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EcoWatch Rating

5.0/5

SSAY Solar Savings All Year

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

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon System Decommissioning

Website: http://www.solarsavingsallyear.com/
Address: 8 Rusten Ln, Nanuet, NY 10954
Phone: 8084890251
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Synergy Smart Homes - Connecticut Solar & Elite SunPower Dealer

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

Services Offered

  • Service icon Battery Storage
  • Service icon Tesla Powerwall
  • Service icon Consultation
  • Service icon Skilled Repairs
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: https://www.solarinstallationcontractor.com/
Address: 20 Tuttle Pl Suite 7, Middletown, CT 06457
Phone: 8603415001
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Solar X - Solar Maintenance Professionals

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

Services Offered

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

Website: http://www.solarxpros.com/
Address: 3455 NJ-66 Suite 3B, Neptune Township, NJ 07753
Phone: 7329926323
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Long Island Power Solutions

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

Services Offered

  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Battery Storage
  • Service icon Panel Installation

Website: https://www.lipowersolutions.com/
Address: 2060 Ocean Ave, Ronkonkoma, NY 11779
Phone: 6313480001
Outstanding Local Installer
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EcoWatch Rating

4.9/5

NYS Essential Power

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

Services Offered

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

Website: https://www.nysessentialpower.com/
Address: 13 Trade Zone Dr, Ronkonkoma, NY 11779
Phone: 6314002680
Outstanding Local Installer
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EcoWatch Rating

4.9/5

J Synergy Green, Inc.

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: http://www.jsynergyllc.com/
Address: 99 Main St, East Rockaway, NY 11518
Phone: 5163312020
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Solar Mentor

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

Services Offered

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

Website: https://www.solarmentor.com/
Address: 16426 Metcalf Ave, Flushing, NY 11365
Phone: 7183742629
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Mpower Solar

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

Services Offered

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

Website: https://www.mpowersolar.com/
Address: 150 Kenilworth Pl, Brooklyn, NY 11210
Phone: 8006774812

Methodology: How We Ranked the Best Solar Companies in Hauppauge

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


Below are some the criteria we examined specifically for New York 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 Hauppauge

Solar panels run off a free energy source — the sun — but to take advantage of this you will first need to pay to set up your panels.Some important factors that determine how much it will cost to install solar panels on your home and how much money you could save over time include:

  • System size and type: Some models are more pricy than others, so the one you get can raise or lower your initial investment. Plus, the more solar panels you need, the more it'll cost.
  • Electricity consumption: The average home in Hauppauge doesn’t use much energy, and as a result may not see as many savings on their power bills.
  • How much sunlight your roof gets: If your rooftop doesn’t get a lot of direct sunlight, your solar system won’t be able to make as much energy, which will leave you with lower savings on electricity bills than someone with a roof that gets a lot of sunlight.
  • The cost of energy for you: If your local power rates are high, there's a good chance you'll get a higher return on your investment in a solar system. In Hauppauge, you can save an average of $1,525 a month on your electricity bills.

So is a solar panel system worth it? Whether you want to reduce your electricity costs, greenhouse gas emissions or both, solar panels are a solid investment for many Hauppauge homeowners.

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Solar Incentives in Hauppauge

Because solar power is more sustainable than burning fossil fuels, there are some government incentives in place to encourage people to make the switch.You qualify for the federal solar investment tax credit (ITC) for the tax year you turn on your a solar panel system. You can also possibly pair the ITC with other state and city rebates and benefits. For detailed information about incentives for homeowners in Hauppauge, see our article on solar incentives.

Environmental Impact of Switching to Solar in Hauppauge

There are a few main reasons why many people want to invest in solar energy: to put more money in their bank account and to help the planet.But you may be wondering – how much exactly can you help the planet by making the switch to solar? For homeowners who want to do their part for the planet, going solar is a no-brainer, especially since Hauppauge produces a very high amount of carbon dioxide emissions from its energy generation.While solar panel production emits carbon dioxide, the panels make up for it by significantly reducing the amount of CO2 you would have produced if you still used traditional energy. In Hauppauge, you can reduce your carbon footprint by 100 pounds a year with solar panels. Since solar energy is abundant and makes electricity without CO2 emissions, installing solar panels is one easy step you can take to help the environment.

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EcoWatch's Hauppauge, NY Solar Company Rankings FAQs

Which solar power company is the best in Hauppauge?

In Hauppauge, Leviathan Solar is the best local solar company. Our team of experts rates it 5.00 stars, so it's a great choice if you're planning to add solar panels to your house.

What are the advantages and disadvantages of solar power?

The biggest advantages of solar power are that it can lower or, for some, completely erase your electricity bills, raise the value of your home and cut back on your carbon footprint. The biggest disadvantages are that solar panels can be expensive to install, you may not see as many savings if you don’t use a lot of electricity and whether you can install solar panels depends on your roof configuration.

How long does it take for solar to pay for itself?

Solar panels generally pay for themselves in about 11.1 years, but your solar payback period will vary depending on your utility costs. The higher your typical power bill, the quicker your solar panel system will pay for itself.

What are the different types of solar panels?

There are three main types of solar panels: monocrystalline, polycrystalline and thin-film. As for efficiency and price, monocrystalline has the highest for both, then polycrystalline, and then thin-film. The best choice for you is highly influenced by your roof layout, 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.