15 Best Solar Companies in Islip, NY (2024 Reviews)

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

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

Average Islip homeowner saves $1,842/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Ranking Methodology: Karsten Neumeister

Updated February 01, 2024

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 Islip

If you’re a home or business owner looking to capitalize on the solar incentives in Islip, it can be a lot of work to narrow down which company to decide on. But, the hard work is worth it since adopting solar power is typically a great idea. Since the cost of energy is getting higher and higher each year, many homeowners are considering investing in solar to save money on electricity for their homes.


As you start your search for the best solar companies in Islip, you’ll notice that there are a lot of providers to choose from. So, we’ve accumulated a carefully curated list of the top solar companies in the area.To get free quotes from the leading solar companies in Islip, click the "get quote" button below.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Regional Coverage

Momentum Solar

★★★★★
4.5

  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch Rankings for Solar Companies in Islip

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.0/5

SunPower Corporation

  • Pros icon Free Quotes
  • 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 Battery Storage
  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Consultation

Website: http://us.sunpower.com/
Address: 400 Executive Blvd Suite 137, Elmsford, NY 10523
Phone: 8007867693
Outstanding Local Installer
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EcoWatch Rating

3.0/5

SunPower Master Dealer SOLAR

  • Pros icon Free Quotes
  • 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 Permit Assistance
  • Service icon Commercial Panels
  • Service icon Residential Panels

Website: http://www.kamtechsolarny.com/
Address: 117 Bay 8th St, Brooklyn, NY 11228
Phone: 8002945045
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Sunrun Solar

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

Services Offered

  • Service icon Battery Storage
  • Service icon Residential Panels

Website: https://www.sunrun.com/
Address: 10 New Maple Ave, Pine Brook, NJ 07058
Phone: 8333245886
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Harmony Energy

  • 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 Consultation
  • Service icon Residential Panels

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

Leviathan Solar

  • 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 Residential Panels

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

4.9/5

Long Island Power Solutions

  • 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 Commercial Panels
  • Service icon Residential Panels
  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Financing Assistance

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 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 Battery Storage
  • Service icon Commercial Panels
  • Service icon Residential Panels

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

EcoWatch Rating

5.0/5

Marcor Solar

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

Services Offered

  • Service icon Residential Panels
  • Service icon Maintenance
  • 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

4.8/5

Hytech Home

  • 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 Maintenance
  • Service icon Residential Panels
  • Service icon Solar Panel Upgrades
  • Service icon Commercial Panels
  • Service icon Skilled Repairs
  • Service icon Consultation

Website: https://hytechhome.com/
Address: 6 Washington Ave, Bay Shore, NY 11706
Phone: 8883943111
Outstanding Local Installer
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EcoWatch Rating

4.7/5

SUNation Energy

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

Services Offered

  • Service icon Tesla Powerwall
  • Service icon Permit Assistance
  • Service icon Consultation
  • Service icon Skilled Repairs
  • Service icon Community Solar Projects
  • Service icon Battery Storage
  • Service icon Financing Assistance
  • Service icon Commercial Panels
  • Service icon Residential Panels
  • Service icon Maintenance

Website: https://www.sunation.com/
Address: 171 Remington Blvd, Ronkonkoma, NY 11779
Phone: 6317509454
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Sunshine Plus Solar Corp - Solar Panel Company Long Island

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

Services Offered

  • Service icon Residential Panels
  • Service icon Commercial Panels
  • Service icon Maintenance

Website: http://www.sunshineplussolar.com/
Address: 399 Little East Neck Rd, West Babylon, NY 11704
Phone: 6314223500
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Surf Clean Energy

  • 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 Consultation
  • Service icon Residential Panels

Website: https://surfcleanenergy.com/
Address: 111 Smithtown Bypass, Hauppauge, NY 11788
Phone: 8666317873
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Bohemia Commercial Solar Clean Energy Solutions

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

Services Offered

  • Service icon Residential Panels
  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Commercial Panels

Website: http://bohemiasolarcleanenergysolutions.com/
Address: 1424 County Road 93, Bohemia, NY 11716
Phone: 6316997022
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Long Island Solar Sales

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

Services Offered

  • Service icon Residential Panels
  • Service icon Consultation
  • Service icon Battery Storage

Website: http://longislandsolarsales.com/
Address: 222 Verona Pkwy, Lindenhurst, NY 11757
Phone: 5167691386
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Copiague Commercial Solar Clean Energy Systems

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

Services Offered

  • Service icon Financing Assistance
  • Service icon Maintenance
  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon Residential Panels

Website: http://copiaguesolarcleanenergysystems.com/
Address: 985 Howard Ave, Copiague, NY 11726
Phone: 6318101126

Methodology: How We Ranked the Best Solar Companies in Islip

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


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 Islip

The cost of putting up a solar panel system has decreased immensely in the past few years, but it’s still a large investment for most homeowners.The overall price and potential savings vary depending on a few key factors such as:

  • Energy consumption: Installing a solar system may be too pricey an investment for homes that don’t need too much energy each month.
  • Average daily sunlight: Since Islip gets a decent amount of average daily sunlight, your solar panels can generally produce enough energy to power your whole home, which affects how much your electricity bills will be.
  • The model of solar panel system you can afford: This depends on your income and budget.
  • Incentives: The federal solar investment tax credit currently lets you reduce 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. Additionally, you can save about $22,000 over 20 years on your utility bills, without incentives.

There are several wonderful benefits of solar in spite of the initial cost of installation. It can help the planet and your bank account. Additionally, it can raise the value of your home, giving you even more benefits if you want to sell your home later.

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Solar Incentives in Islip

There are several reasons why going solar is a great investment. One of them consists of some government incentives that can help save you some money.These incentives typically take the form of cash rebates, tax credits and/or solar renewable energy credits. They can lower how much you end up spending on installing solar panels by 0, upwards of 50% depending on your location. Check out our article on solar incentives to learn what incentives are available to you.

Environmental Impact of Switching to Solar in Islip

Going solar can have a meaningful impact on the environment.But – how much exactly can you help the planet by going solar? Using renewable energy for electricity in place of burning fossil fuels is a great way to lower carbon dioxide emissions if you're worried about Islip's large level of greenhouse gas emissions.Since solar panels don’t release CO2 emissions into the atmosphere when creating electricity, they’re a good substitute for nonrenewable energy sources. In fact, you could reduce your carbon dioxide emissions by about 100 pounds each year. The great things about solar power are abundant — just like solar power is! That's why so many Islip residents have been happy with using solar energy.

Best National Provider

SunPower

★★★★★
5.0

  • Most efficient panels on the market
  • National coverage
  • Cradle to Cradle sustainability certification
  • Great warranty coverage
  • Expensive
  • Customer service varies by local dealer

Best Regional Coverage

Momentum Solar

★★★★★
4.5

  • Great warranty coverage
  • Representatives are experts on local policies
  • Concierge service ensures steady communication
  • Slightly limited service offerings

Best for Leasing

Sunrun

★★★★★
4.0

  • Expansive service area
  • Many financing options
  • Some reported issues with customer service
  • Some reported issues with door-to-door sales

EcoWatch's Islip, NY Solar Company Rankings FAQs

What is the most reputable solar panel company in Islip?

In Islip, SunPower Corporation is the top local solar company. Our team of experts rates it 4.00 stars, so it's a great choice if you're planning to add solar panels to your roof.

What are the advantages and disadvantages of solar power?

A few of the biggest pros are that it reduces your electricity bills, it’s environmentally friendly, and it can give you a good return on your investment (ROI). The most notable cons are that solar panels don’t work as well when there’s limited direct sunlight, they cost a lot upfront and solar panels aren’t always aesthetically pleasing.

Is it worth installing solar panels on my home?

Solar panels call for a significant upfront investment that will cost you several thousands of dollars, but whether or not solar panels are worth it depends on a variety of factors like how much you pay for electricity and how much direct sunlight your roof gets.

How often do solar panels have to be replaced?

Although the average lifespan of solar panels is 25 to 30 years, that doesn't mean they should be disposed of. What this means is how much energy they produce will have decreased by about 0.8% each year since installing them. You can opt to replace them after having them for that long or you can continue to use them at a lower efficiency after that time.

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.