The energy efficiency industry in Massachusetts consists of organizations that aim to minimize waste by maximizing energy utilization. These companies offer various innovative solutions such as electric vehicle charging stations, energy management systems, energy audits, retro-commissioning, and energy infrastructure designs. Their clientele ranges from state and local governments, commercial setups to individuals. Their objectives align with global sustainability goals, pushing the industry towards cleaner, more affordable energy solutions. The future direction is shaped by renewed commitment to environmental concerns and an impending energy transition, potentially creating new market opportunities.


Top 24 energy efficiency companies in Massachusetts

1. Ameresco

  • Website: ameresco.com
  • Headquarters: Framingham, Massachusetts, United States
  • Founded: 2000
  • Headcount: 1001-5000
  • Latest funding type: Post Ipo Debt
  • LinkedIn

Ameresco is a leading cleantech integrator and renewable energy asset developer, offering comprehensive energy efficiency, infrastructure upgrades, and renewable energy solutions in North America and Europe.


2. EnerNOC

Enel X North America is a company that offers innovative energy solutions to businesses and individuals. They provide a range of services including electric vehicle charging stations, energy management systems, and demand response programs.


3. Noresco

  • Website: noresco.com
  • Headquarters: Westborough, Massachusetts, United States
  • Founded: 1984
  • Headcount: 501-1000
  • LinkedIn

NORESCO is a sustainable management services company that specializes in energy efficiency and sustainability consulting. They offer solutions such as energy audits, retro-commissioning, and energy infrastructure design. They cater to various markets including state and local governments, federal government, higher education, healthcare, and commercial buildings.


4. The Cadmus Group

  • Website: cadmusgroup.com
  • Headquarters: Waltham, Massachusetts, United States
  • Founded: 1983
  • Headcount: 501-1000
  • Latest funding type: Acquired
  • LinkedIn

Cadmus Group is a professional services company that offers a wide range of solutions in the fields of energy efficiency, data analytics, business transformation, and more. They provide guidance, analysis, and support to help clients achieve their objectives.


5. Nexamp

  • Website: nexamp.com
  • Headquarters: Boston, Massachusetts, United States
  • Founded: 2007
  • Headcount: 201-500
  • Latest funding type: Private Equity
  • LinkedIn

Nexamp is a clean energy company that offers solar power solutions to help businesses and communities reduce their electricity costs and embrace sustainable energy. They provide power purchase agreements and help with the development and maintenance of solar farms. By supporting solar energy, customers can save 10-20% on their annual electricity costs.


6. Commonwealth Fusion Systems

  • Website: cfs.energy
  • Headquarters: Cambridge, Massachusetts, United States
  • Founded: 2018
  • Headcount: 51-200
  • Latest funding type: Series B
  • LinkedIn

Commonwealth Fusion Systems (CFS) is a company dedicated to the development and commercialization of clean, fusion energy. Combining worldwide research in fusion science with high temperature superconductors, CFS aims to build smaller and more cost-effective tokamak fusion systems. Their goal is to create the world's first net energy-producing fusion machine, paving the way for a commercially viable fusion power plant and combatting climate change.


7. Vicinity Energy

Vicinity Energy is an innovative and sustainable company that provides district energy solutions. They specialize in managing energy infrastructure, offering safer and more efficient thermal energy production and distribution through underground pipes. Their services eliminate the need for onsite combustion, reducing carbon impact and providing heating and cooling services.


8. EnergySage

  • Website: energysage.com
  • Headquarters: Boston, Massachusetts, United States
  • Founded: 2009
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

EnergySage is a platform that helps homeowners and businesses make smart energy decisions. They provide information and resources on solar panels, energy efficiency, electric vehicles, and other clean energy options. By connecting users with qualified local companies, EnergySage enables them to save money and reduce their environmental impact.


9. Yaskawa Solectria Solar

  • Website: solectria.com
  • Headquarters: Lawrence, Massachusetts, United States
  • Founded: 1915
  • Headcount: 201-500
  • LinkedIn

Solectria Renewables is a company that specializes in renewable energy solutions. They offer a range of inverters and power electronics for solar energy systems. With a focus on sustainability and efficiency, Solectria Renewables delivers high-quality products that help customers harness the power of the sun.


10. Center for EcoTechnology

Center for EcoTechnology is a nonprofit organization that helps integrate practical and high-performance building practices during construction to boost energy performance. They offer services such as waste reduction, energy saving, and sustainability solutions.


11. World Energy, LLC

World Energy is a leading provider of sustainable fuels and energy solutions for the transportation industry. With a focus on decarbonization, they offer a range of renewable fuel certificates, including Sustainable Marine Fuels Certificate (SMFc), Sustainable Rail Fuels Certificate (SRFc), Sustainable Hydrogen Fuels Certificate (SHFc), and Sustainable Ground Fuels Certificate (SGFc). They work with global partners to develop innovative technologies and scalable infrastructure to accelerate the adoption of low-carbon transportation fuels. As pioneers in the industry, World Energy is committed to building a net-zero future.


12. Malta Inc

  • Website: maltainc.com
  • Headquarters: Cambridge, Massachusetts, United States
  • Founded: 2018
  • Headcount: 11-50
  • Latest funding type: Series B
  • LinkedIn

Malta Inc. offers breakthrough long duration energy storage technology that accelerates the decarbonization of the grid and economy. Their energy storage plants can repurpose fossil fuel plants, reducing carbon emissions and bringing down annual carbon dioxide emissions. They prioritize sustainability and resource efficiency in their supply chains.


13. Rexel Energy Solutions USA

Rexel Energy Solutions is a company specializing in providing tailored and flexible energy solutions. They offer a range of products and services including EV charging stations, lighting and controls, HVAC and mechanical systems, battery storage, and water conservation. With a dedicated team of experts and a focus on customer satisfaction, Rexel Energy Solutions is committed to helping businesses exceed their goals in the clean energy sector.


14. Dalkia Energy Solutions

Dalkia Solutions is a US-based building energy efficiency business, providing a comprehensive range of energy services to commercial and industrial companies nationwide. With expertise in energy management, the company helps enterprises reduce energy consumption, improve environmental performance, and achieve positive business outcomes.


15. 1366 Technologies, Inc

  • Website: 1366tech.com
  • Headquarters: Bedford, Massachusetts, United States
  • Founded: 2008
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

1366 Technologies is a company that specializes in direct wafer manufacturing for the solar industry. They offer revolutionary technology for producing silicon wafers, which can reduce manufacturing costs by 50% and energy consumption by 60%. Their products provide an efficient and cost-effective solution for solar panel manufacturers.


16. Advent Technologies Holdings, Inc.

  • Website: advent.energy
  • Headquarters: Boston, Massachusetts, United States
  • Founded: 2006
  • Headcount: 51-200
  • Latest funding type: Post Ipo Equity
  • LinkedIn

Advent is a clean energy company specializing in fuel cell technology. They offer complete fuel cell systems that are low-cost, fuel-flexible, and resilient. Advent's fuel cells can convert hydrogen and other renewable fuels to electricity, making them ideal for power generation in various industries. With a world-class team of material scientists and electrochemists, Advent focuses on addressing clean energy challenges and decarbonizing the world.


17. Aegis Energy, EDF Group

  • Website: aegischp.com
  • Headquarters: Holyoke, Massachusetts, United States
  • Founded: 1985
  • Headcount: 51-200
  • Latest funding type: Acquired
  • LinkedIn

Aegis is a company that specializes in energy efficiency solutions and offers cogeneration systems for heat and power generation. They prioritize the health and safety of their customers, employees, and service providers. With over 1,000 installations since 1985, Aegis helps clients save on energy costs and reduce emissions. They provide comprehensive building energy solutions for commercial, industrial, and institutional customers.


18. Save Energy Systems, Inc.

  • Website: saveenergysystems.com
  • Headquarters: Westborough, Massachusetts, United States
  • Founded: 2012
  • Headcount: 11-50
  • Latest funding type: Seed
  • LinkedIn

Save Energy Systems is a company that offers innovative solutions to help individuals and businesses reduce their energy consumption and lower their carbon footprint. With a focus on sustainability and efficiency, they provide products and services designed to optimize energy usage and promote a greener future.


19. Fairbanks Energy Services

Fairbanks Energy is a company that specializes in providing innovative energy solutions for businesses. They offer a wide range of services including energy audits, LED lighting retrofits, and HVAC optimization. Their goal is to help companies reduce their energy costs and improve their sustainability.


20. Renewable Energy Systems, LLC

  • Website: ressolar.com
  • Headquarters: Cohasset, Massachusetts, United States
  • Founded: 2007
  • Headcount: 11-50
  • LinkedIn

RESSolar is a certified solar installer providing residential and commercial solar energy solutions. They offer high-quality solar hot water systems using top-rated equipment. With low maintenance and free online monitoring, their systems are designed for maximum efficiency. They also provide financing options and incentives for customers to embrace renewable energy.


21. Pionis Energy

Pionis Energy is a company offering solutions and services for sustainable energy management. They provide clean energy solutions for businesses seeking to reduce their carbon footprint and lower their energy costs.


22. Beacon Solar

Beacon Solar Construction is a leading solar energy company based in Massachusetts, Rhode Island, and Southern Connecticut. They offer design consultations, troubleshooting, installation estimates, and other services related to solar power. With a focus on customer satisfaction, they provide Qmerit certified solutions and collaborate with contractors and consumers to accelerate the transition to electrification. Beacon Solar Construction is experienced in residential and commercial solar projects, as well as battery and energy storage solutions.


23. Smartflower

Smartflower is revolutionizing the clean energy industry with innovative solar solutions for discerning homeowners and businesses. Their sculptural and intelligent solar panels make a beautiful, statement-making addition to any space. With their fully-integrated systems and efficient EV chargers, customers can enjoy clean energy at any time. Smartflower offers delivery, installation, and servicing by certified technicians, ensuring a hassle-free experience. They also provide a Smartflower + Plus battery option for added power storage. Join the clean energy revolution with Smartflower.


24. Cape Light Compact

Cape Light Compact is a company that offers energy efficiency solutions for residential and business customers. They provide assessments, incentives, and financing options to help customers save energy and reduce costs.


Want to find more energy efficiency companies?


If you want to find more companies that provide innovative, sustainable energy solutions and infrastructure designs you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


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...and a lot more!