The vibrant solar power industry in Maine is home to a wide array of companies catering to the growing demand for renewable energy solutions. These firms range from solar equipment providers such as ReVision Energy to energy project financers like Coastal Enterprises, Inc. (CEI). These businesses are offering various innovative products and services, such as rooftop solar, solar battery backups, and solar-powered heating systems. They are not only contributing to the fight against climate change but also playing a significant role in moving Maine towards a more sustainable, resilient, and energy-independent future. Experts predict an increasing trend of solar power adoption across the state, making the industry an attractive prospect for investment and growth.


Top 19 solar power companies in Maine

1. ReVision Energy

ReVision Energy is a solar energy company offering a range of products and services including rooftop solar, community solar, ground mount solar, solar battery backups, electric vehicle charging, solar water heating, and solar heat pumps. They are committed to sustainability and have built over 10,000 solar energy systems in the region.


2. Maine Green Power

  • Website: megreenpower.com
  • Headquarters: Portland, Maine, United States
  • Headcount: 1001-5000

Maine Green Power offers affordable green power programs for residential and commercial customers, enabling them to choose renewable energy sources such as wind, water, sun, or forests that are made in Maine. Join the fight against climate change today!


3. CEI (Coastal Enterprises, Inc.)

  • Website: ceimaine.org
  • Headquarters: Brunswick, Maine, United States
  • Founded: 1977
  • Headcount: 51-200
  • Latest funding type: Debt Financing
  • LinkedIn

Coastal Enterprises, Inc. (CEI) is an investment company based in Brunswick, ME. They offer various financing options such as business loans, venture capital, and relief programs for businesses and projects. CEI specializes in providing financing for solar energy projects, community facilities, and real estate investments. They also support sustainable food systems, agriculture, and seafood marketing initiatives. CEI aims to build an inclusive economy by creating jobs, promoting small business ownership, and advancing a just transition to a climate-resilient future.


4. Maine Solar Solutions

Maine Solar Solutions specializes in the design and installation of solar electric (PV) and battery backup systems. From design to permitting to installation, our qualified team handles all the details to make your solar installation easy and worry-free.


5. Sundog Solar

  • Website: sundog.solar
  • Headquarters: Searsport, Maine, United States
  • Founded: 2009
  • Headcount: 11-50
  • LinkedIn

Sundog Solar is a solar energy company that offers solar panel installations, Tesla Powerwall batteries, and heat pump financing. They aim to help customers achieve energy independence, reduce dependence on fossil fuels, and save money on energy costs. Sundog Solar provides residential and commercial solar energy solutions, with a focus on Maine businesses and homes. They also offer off-grid solar systems and electric vehicle charger installations.


6. Quantum Harvest LLC

Quantum Harvest offers a variety of fully self-contained, EMP-protected, sun-tracking portable solar power systems with several patents pending, suitable for camping, home back up for power outages and renewable energy solutions for water pumps.


7. Alternative Energy & Solar Solutions

Alternative Energy & Solar Solutions provides sustainable solar solutions to the environmental and economic challenges posed by the growing global energy demand, offering solar panels, solar hot water systems and other alternative energy products.


8. Goggin Energy

  • Website: gogginenergy.com
  • Headquarters: Portland, Maine, United States
  • Founded: 1999
  • Headcount: 11-50

Goggin Energy offers energy-efficient heat pumps and solar PV to residential and business customers in Southern Maine. With their advanced products, customers can enjoy even warmth and air conditioning throughout the year without worrying about running out of oil or propane. Their team provides professional installation and maintenance services, ensuring customer satisfaction.


9. Maine Community Solar

Maine Community Solar is a provider of community solar programs that support local renewable energy and save on electric bills.


10. Sunox

  • Website: sunox.org
  • Headquarters: Freeport, Maine, United States
  • Headcount: 11-50
  • LinkedIn

Sunox is a company that focuses on solar energy and its applications. They provide innovative technologies and solutions for various industries including agriculture, fisheries, and aquaculture.


11. Performance Plumbing and Heating

Performance of Maine provides comprehensive energy solutions to residential and commercial clients in the state of Maine


12. Intersolar North America

Intersolar North America and Energy Storage North America offer actionable education, invaluable networking, and an immersive expo hall experience to contractors, developers, distributors, engineers, installers, integrators, manufacturers, project developers, utilities, and more!


13. RLC Engineering

  • Website: rlc-eng.com
  • Headquarters: Hallowell, Maine, United States
  • Founded: 2006
  • Headcount: 51-200
  • LinkedIn

RLC Engineering is a professional engineering firm specializing in power generation and distribution systems. They offer a comprehensive range of services including power system studies, transmission line design, substation design, and energy management. Their team of highly experienced engineers provides innovative engineering solutions tailored to meet their clients' specific needs.


14. E.S. Boulos Company

  • Website: esboulos.com
  • Headquarters: Westbrook, Maine, United States
  • Founded: 1920
  • Headcount: 51-200
  • LinkedIn

E.S. Boulos is an electrical and telecommunication installation company that specializes in substation construction and renewable systems. As a subsidiary of MYR Group Inc., they offer successful solutions and quality execution for their clients' projects. With a strong focus on safety and sustainability, E.S. Boulos provides innovative practices and comprehensive solutions, utilizing national resources when needed. They are committed to building a sustainable future for their people, clients, and communities.


15. Midcoast Green Collaborative

Midcoast Green Collaborative is a project of Community Building Trust, a 501 (c) 3 Damariscotta nonprofit organization dedicated to community building. We are a group of business persons, public officials and other citizens from the Damariscotta area who have joined together to promote a viable ""green"" program of socially responsible economic growth in Midcoast Maine that will help answer the need for new, well paying jobs in a revitalized, balanced economy built on the production of goods, rather than just services, retail sales, and tourism. We see in the challenge posed by rapidly growing, world-wide energy shortages and a global environment increasingly imperiled by the burning of oil an historic opportunity to build a sustainable society and a latent market for sustainable products and services. We seek to build awareness of this impending crisis among the local population and acquaint people with the many ways in which thousands of communities in this country and around the world have begun to actively and successfully deal with it.


16. Talmage Solar Engineering, Inc.

We are committed to creating value by balancing nature, humanity, and technology. From our humble beginnings of following our passions in Kennebunkport, Maine, we have grown to be an industry leader in design, engineering, product assessment, financial modeling, technical consultation and construction. Founded in 1975, Talmage Solar Engineering, Inc. has been designing and installing renewable energy systems for a wide range of applications.


17. EMPower Energy

EMPower Energy is a company specializing in the development of electricity balancing infrastructure. With decades of technical experience and a deep knowledge of the national energy context, we provide sustainable solutions to support Mexico's transition to renewable energies. Our advanced technology enables us to generate electricity without using water, contributing to environmental conservation. We comply with all environmental laws and regulations, and we actively engage in social responsibility initiatives, including the construction of virtual classrooms and the installation of internet infrastructure in communities.


18. Competitive Energy Services

Competitive Energy Services is a strategic energy consulting firm that has been providing procurement and energy resources assistance to end-users for over 20 years. They have established a reputation for success through hard work, attention to detail, and innovative thinking. Their customized and innovative services, combined with their extensive experience in the industry, make them a valuable partner in navigating the deregulated energy market.


19. King Pine Properties

King Pine Properties is a real estate investment firm specializing in energy efficient homes. We are committed to redeveloping exceptional properties--whether for resale or our rental portfolio. Combining state-of-the-art building science practices with contemporary design aesthetics, our homes offer functional living spaces, superior comfort, low heating and cooling costs, healthy indoor air quality, and a reduced carbon footprint.


Want to find more solar power companies?


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