12 Best Solar Companies in South Portland, ME (2024 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 12 in South Portland based on:

  • Customer review scores
  • Service area for South Portland, ME
  • Company policies and services offered
  • Accreditations and certifications

Average South Portland homeowner saves $1,381/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 South Portland

When choosing between the best solar panel installers, South Portland homeowners have more providers to choose from than ever before, which can be mind-boggling, but we’re here to make making the switch to solar energy simpler. After 20 years of offsetting your energy costs with a solar system, you can save about $16,000 on your electricity bills.


To help you navigate through the large variety of South Portland solar installers, we’ve come up with a list of the top ones.To help you understand if solar panels are something you should get for your home, you can get a free, no-obligation quote from one of the best solar companies in South Portland by clicking the 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 Technology

Tesla Energy

★★★★★
3.2

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch Rankings for Solar Companies in South Portland

Best Local Installer
ecowatch badge icon

EcoWatch Rating

4.9/5

ReVision Energy

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

Services Offered

  • Service icon Commercial Panels
  • Service icon Battery Storage
  • Service icon EV Charger
  • Service icon Community Solar Projects
  • Service icon Financing Assistance
  • Service icon Residential Panels
  • Service icon Maintenance

Website: https://www.revisionenergy.com/
Address: 758 Westbrook St, South Portland, ME 04106
Phone: 2072216342
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

4.6/5

Goggin Energy

  • 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 Residential Panels
  • Service icon Commercial Panels

Website: https://www.gogginenergy.com/
Address: 75 W Commercial St STE 202, Portland, ME 04101
Phone: 2077727557
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

Maine Solar Solutions

  • 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 Community Solar Projects
  • Service icon Residential Panels
  • Service icon Off-Grid Solar Systems
  • Service icon Tesla Powerwall
  • Service icon Permit Assistance
  • Service icon Grid-Tied Solar System
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Commercial Panels
  • Service icon Battery Storage

Website: https://mainesolarsolutions.com/
Address: 491 US-1 Suite 20, Freeport, ME 04032
Phone: 2078717191
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Mancini Electric

  • 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 Residential Panels
  • Service icon Skilled Repairs
  • Service icon Emergency Services
  • Service icon Commercial Panels

Website: https://www.mancinielectric.com/
Address: 179 Sheridan St, Portland, ME 04101
Phone: 2077745829
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Assured Solar Energy

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

Services Offered

  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades
  • Service icon Off-Grid Solar Systems
  • Service icon Commercial Panels
  • Service icon Residential Panels
  • Service icon Grid-Tied Solar System

Website: https://assuredsolar.com/
Address: 460 Mountfort Rd, North Yarmouth, ME 04097
Phone: 2072212916
Outstanding Local Installer
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EcoWatch Rating

3.0/5

Cleantap Energy

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

Website: http://www.cleantapenergy.com/
Address: 19 Main St, Gray, ME 04039
Phone: 2073837635
Outstanding Local Installer
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EcoWatch Rating

3.0/5

ALL Solar Energy Solutions

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

Services Offered

  • Service icon Residential Panels
  • Service icon Battery Storage
  • Service icon Commercial Panels
  • Service icon Consultation
  • Service icon Solar Panel Upgrades

Website: https://allsolarenergysolutions.com/
Address: 12 Center Park Road Suite 5, Topsham, ME 04086
Phone: 2075365935
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

SunVersion LLC

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

Services Offered

  • Service icon Maintenance
  • Service icon Residential Panels
  • Service icon Battery Storage
  • Service icon Solar Panel Upgrades
  • Service icon Financing Assistance
  • Service icon Commercial Panels

Website: http://www.sunversion.com/
Address: 88 Brownfield Rd, Hiram, ME 04041
Phone: 2072560931
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Mains Electric, LLC

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

Services Offered

  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Skilled Repairs
  • Service icon Solar Panel Upgrades
  • Service icon Commercial Panels
  • Service icon Emergency Services

Website: http://www.mainselectric.com/
Address: 44 Main St, Alton, NH 03809
Phone: 6038333312
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Sunny D Solar

  • Pros icon Reliable Customer Support
  • 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 Consultation
  • Service icon Residential Panels
  • Service icon Financing Assistance
  • Service icon Commercial Panels

Website: http://www.sunnyd.solar/
Address: 8 Birch Dr, Rochester, NH 03867
Phone: 6033689057
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

3.0/5

Net Meter NH Solar

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

Services Offered

  • Service icon Residential Panels

Website: http://www.netmeternh.com/
Address: 89 High St, Exeter, NH 03833
Phone: 6039696421
Outstanding Local Installer
ecowatch badge icon

EcoWatch Rating

5.0/5

ReVision Energy

  • 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 Residential Panels
  • Service icon Financing Assistance
  • Service icon Community Solar Projects
  • Service icon Maintenance
  • Service icon EV Charger
  • Service icon Battery Storage
  • Service icon Commercial Panels

Website: https://www.revisionenergy.com/locations/brentwood-nh-solar-showroom/
Address: 7 Commercial Dr, Brentwood, NH 03833
Phone: 6036791777

Methodology: How We Ranked the Best Solar Companies in South Portland

EcoWatch's solar experts analyzed each solar company in South Portland 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 South Portland


Below are some the criteria we examined specifically for Maine 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 South Portland

For the majority of homeowners, whether or not to invest in solar energy depends the most on the cost.Some significant things that determine the upfront cost and potential savings over time include:

  • The model of solar panels you’re planning on getting: More high-tech panels are more costly, so that will affect your budget for your solar project.
  • How much power your household consumes: Homes that need plenty of energy each month may require more solar panels and, as a result, more upfront cost, but will also enjoy more savings over time.
  • Your household's power bills: With high monthly electricity bills in South Portland, you could save about $1,100 a year with solar.
  • Incentives: Along with the federal Solar Investment Tax Credit (ITC), which gives you a tax credit currently worth 0 of your total installation cost, your local government may offer additional tax exemptions, credits or rebates that can help you save even more. Aside from incentives, you can save an average of $16,000 over 20 years with your solar panels, too.

Although a solar panel system costs a good chunk of money upfront, it can save you thousands of dollars over time. The question of how much, though, depends on a number of factors, including the size of your solar panel system and incentives.

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Solar Incentives in South Portland

Switching to solar power has plenty of wonderful benefits. Not only can it help protect the Earth, but you can also save a decent amount of money on your installation with various government incentives.On top of the federal solar investment tax credit, there are also some local incentives, which in almost all cases, stack with the federal incentive, so you can save even more. Our article on solar incentives has more information on the incentives you can take advantage of in South Portland.

Environmental Impact of Switching to Solar in South Portland

One of the best reasons to embrace solar power is to decrease your dependence on nonrenewable energy sources like burning fossil fuels, which are harmful for the environment.But you may be wondering – how much exactly can you help the planet by going solar? A significant thing to be mindful of is your overall carbon footprint. For example, if you have a long commute, your footprint may be bigger, so switching to solar power for your house can help offset that.Though making solar panels releases carbon dioxide emissions, the panels make up for it by significantly reducing the amount of CO2 you would have produced if you still used traditional energy. In South Portland, you can reduce your carbon footprint by 40 pounds a year with solar panels. Since energy from the sun is plentiful and makes electricity without CO2 emissions, adding solar panels to your home is one easy step you can take to help the environment.

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 Technology

Tesla Energy

★★★★★
3.2

  • Price-match guarantee
  • Sleek, efficient, and durable solar panels
  • Best solar battery on the market
  • Some reported issues with customer service
  • Customer service varies by local dealer

EcoWatch's South Portland, ME Solar Company Rankings FAQs

What is the best solar panel installer in South Portland?

The highest-rated local solar company in South Portland is ReVision Energy, with a rating of 4.90 stars.

Are solar panels really environmentally friendly?

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

How long does it take to see a return on your investment after buying solar panels?

Solar panels typically pay for themselves in about 15.4 years, but your solar payback period will vary depending on your utility costs. The more your typical energy bill, the quicker your solar panel system will pay for itself.

How long do solar panels last?

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 decide 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.