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

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

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

Average Holtsville 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 Holtsville

As a homeowner in Holtsville, you may be considering switching to solar power and wondering about the best solar companies in your city. Solar could be a great choice since it comes with many benefits. The average home can save $22,000 over 20 years when you use solar power. And since solar panels last about 25 to 30 years, your total cost savings will be well above that overall.


There are plenty of installers to choose from, but in this article, we’ll help you pin down your options by recommending some of the best solar companies in Holtsville.To get an idea of how much you might pay to install a solar panel system on your roof, you can get a free, no-obligation quote from one of the top solar companies in Holtsville by clicking 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 Holtsville

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.0/5

SunPower

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

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation
  • 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 Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

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

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

3.0/5

SunRun Solar

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

Website: https://www.sunrun.com/
Address: 153 S Riverside Ave, Terryville, CT 06786
Phone: 2032206748
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Leviathan Solar

  • 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://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 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

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

4.9/5

NYS Essential Power

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

Services Offered

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

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

Long Island Power Solutions

  • 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 Panel Installation
  • Service icon Grid-Tied Solar System
  • 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

4.7/5

SUNation Energy

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

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

4.8/5

Hytech Home

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

Services Offered

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

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

3.0/5

GreenLeaf 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 Solar Carports
  • Service icon Panel Installation

Website: https://gogreenleafsolar.com/
Address: 11 Technology Dr, Setauket- East Setauket, NY 11733
Phone: 6315091747
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 Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation

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

Services Offered

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

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

US Solar Enterprise

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

Website: http://www.us-solar.net/
Address: 1320 Lincoln Ave # 13, Holbrook, NY 11741
Phone: 8772076527
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Renew USA Solar

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

Services Offered

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

Website: https://renewusa.com/
Address: 360 Motor Pkwy Suite 1000, Hauppauge, NY 11788
Phone: 8337363987
Outstanding Local Installer
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EcoWatch Rating

3.0/5

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  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Financing Assistance

Website: http://medfordsolarpower.com/
Address: 1602 Lad Ave, Medford, NY 11763
Phone: 6316074884

Methodology: How We Ranked the Best Solar Companies in Holtsville

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


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 Holtsville

We understand that for most homeowners, the decision to invest in solar hinges on installation costs.A few important factors that dictate how much it will cost to install a solar panel system on your home and how much it could save you over time include:

  • Incentives: Tax-paying citizens who buy and install a solar system this year can save 0 of their overall solar costs by using the federal solar investment tax credit. You can also save about $22,000 on your utility bills over 20 years without incentives.
  • The kind of solar panels you want: More high-tech panels are more costly, so that will influence your budget for your solar project.
  • The amount of sunlight your area gets: Because of Holtsville’s high amount of average daily sunlight, you should be able to save a decent amount on your electricity bills.
  • Energy consumption: Solar may be a high-cost option for families that don’t consume a good amount of energy per month.

Although a solar panel system costs a sizable chunk of money upfront, it can save you a considerable amount in the long term. The question of how much, though, depends on several factors, including the angle of your roof and your energy consumption.

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Solar Incentives in Holtsville

Although a solar power system is typically a $15,000 to $25,000 investment, it can save you a considerable amount of money in the long term due to reduced utility bills and government incentives.When you install a solar panel system, you become eligible to claim the federal tax credit, or ITC. This credit currently lowers your tax bill by 0 of the cost of your solar panels. In addition, there are often some local incentives that you can use to further save. For detailed information about incentives for homeowners in Holtsville, see our article on solar incentives.

Environmental Impact of Switching to Solar in Holtsville

An important reason so many are thinking of switching to solar power is to help reduce their environmental impact.But how much can using solar energy instead of traditional energy actually help the environment? If your home uses lots of energy, you can have an even greater impact on the planet by switching to solar energy.In Holtsville, the average household can reduce their carbon footprint by 100 pounds a year once they go solar. If you want to do your part for the environment, you’ll likely find that there are many benefits of adopting solar power other than just saving money on electricity. You can also help protect the environment, which some would argue is more valuable.

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 Holtsville, NY Solar Company Rankings FAQs

What is the most reputable solar installation company in Holtsville?

The best local solar company in Holtsville is SunPower, with a rating of 4.00 stars.

What is the negative environmental impact of solar panels?

Solar panels can be bad for the environment when manufacturers use toxic chemicals when they’re made. Chemicals can make solar panels difficult to dispose of safely once they’ve reached the end of their lifespan. Solar panel manufacturing needs a lot of energy as well. The energy payback period is about 1 to 4 years.

Are solar panels worth it?

Solar panels can be a good investment for a majority of homeowners, but truthfully, they might not be worth it for everyone. If your home doesn't get enough sunlight or your electricity bills are already fairly low, solar panels might not be for you.

What is solar panel capacity and how much do I need for my house?

Solar panel capacity is rated depending on how much power they generate under standard testing conditions. Since each panel can usually produce about 250 to 400 watts per hour, the average household will need 20 to 35 panels.

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.