Daytime aerial view of wind turbines on a hilltop in Kefalonia, GreeceWatch the Video Read Announcement

Energizing a Sustainable Future

Kefalonia, Greece Wind Project

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Doing Well by Doing Good

Ameresco announces first Environmental, Social
and Corporate Governance (ESG) report

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Building Resiliency: Don't Be Left in the Dark

Why You Should Be Thinking Microgrids

When Off Is Not an Option

Turn Old Lights Into New Savings

Experience Converting Over a Half Million LEDs

Illuminate the Possibilities with Ameresco

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Workplace Resiliency: Promoting Health & Safety
with a Focus on Energy Optimization

Touchless controls, updated HVAC systems, automated entry/exit systems are just
a few measures that can make an immediate impact on re-opening shared spaces.

Learn About Health-Focused ECMs to Consider

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Meet Carbon Neutrality Goals

With Renewable Natural Gas

Download Free White Paper

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A Long-Term Partnership for Energy Infrastructure and Security

Address Deferred Maintenance with No Capital Outlay

Start Here

Our Services

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Efficiency measures and upgrades often include lighting, water, heating, ventilation, cooling, building envelope, smart meters  and controls. We first implement efficiency gains in order to establish a strong baseline for renewable energy generation needs.

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Examples of renewable energy and distributed energy generation resources include Solar PV, CHP and co-gen plants, geothermal, renewable natural gas, wind – all of which can be paired with microgrid and battery storage technologies to promote resiliency and sustainability.

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We have experience in smart building modernization and retrofits, and work with utility distribution systems and non-energy-focused design-build new construction. We also monetize existing energy assets and take ownership and operation off the customers’ balance sheet.

Interior close up shows someone holding a tablet computer and reviewing data

Data drives our energy analytics and supply management solutions ranging from our proprietary asset management software, AssetPlanner®, to energy procurement services for negotiating contracts and stabilizing customers’ energy budgets.

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Our holistic approach ensures end-to-end technical guidance to continued O&M of energy systems. A well-designed and properly executed O&M program is a crucial element in the equipment performance and maintenance required to realize all possible energy savings.

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We are uniquely positioned to provide financing for any opportunity – from ESPCs and PPAs to Design-Build and turnkey EaaS. We have 20 years of experience with a $10B track record in energy projects across financing models, markets, and technologies, utilizing available incentives.

Subscribe to the Ameresco Newsletter

Sign up for Ameresco’s newsletter to be the first to learn about our advanced technologies, catch up with the latest industry news, hear about energy success stories, and more. Join our email list for quarterly email newsletters directly to your inbox.

Founded in 2000, Ameresco, Inc. (NYSE:AMRC) is a leading cleantech integrator and renewable energy asset developer, owner and operator. Our comprehensive portfolio includes energy efficiency, infrastructure upgrades, asset sustainability and renewable energy solutions delivered to clients throughout North America and the United Kingdom.

Leveraging budget neutral solutions — including energy savings performance contracts (ESPCs), power purchase agreements (PPAs) and off-balance sheet Energy as a Service (EaaS) contracts — we eliminate the financial barriers that traditionally hamper energy efficiency and renewable energy projects. Ameresco has successfully completed energy saving, environmentally responsible projects with Federal, state and local governments, K12 school districts, college campuses, healthcare institutions, airports, housing authorities, and commercial and industrial customers.

Ameresco has more than 1,000 employees providing local expertise in the United States, Canada, and the United Kingdom. Founded on a mission to create value and provide energy efficient and renewable solutions to the organizations we serve, Ameresco is relentless in the pursuit of a sustainable future.

Why us?


Ameresco is a leading cleantech integrator with a comprehensive portfolio of energy efficiency and renewable energy solutions.


We are a trusted partner. From design and development to financing and construction, our in-house technical expertise and comprehensive solution portfolio sets us apart.


Our objective approach enables us to implement the most advanced technologies to meet the unique needs of each customer.

Ameresco’s Environmental Impact

Our business is founded on providing clean, green, and sustainable solutions that reduce greenhouse gas emissions for our customers. Ameresco is committed to continuing to deliver comprehensive projects that help accelerate the global transition to a net zero carbon future. Learn more about Ameresco’s impact in our annual ESG report. In 2020, Ameresco’s renewable energy assets and customer projects delivered a carbon offset equivalent to approximately 12.6 million metric tons of carbon dioxide, and over 60 million cumulative metric tons since going public in 2010. This carbon offset is approximately equal to one of the following:

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miles driven by an average passenger vehicle (GhG emission equivalency)

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homes’ energy use for one year
(carbon dioxide emission equivalency)


acres of U.S. forests in one year
(carbon sequestration equivalency)

Learn about how you can make your organization
Carbon Neutral with Renewable Natural Gas (RNG).
How can you add RNG to your energy portfolio?

Awards & Accolades

We are honored to be recognized by agencies from Forbes, Fast Company, S&P Global Platts, Frost and Sullivan, Guidehouse Insights, Energy + Environmental Leader for our industry leadership and client projects. Learn more about our projects’ awards and accolades ➞

Forbes 2021 America's Best Mid-Size Companies Logo
S&P Global Energy Awards 2020 Finalist Logo
2020 Environment + Energy Leader 100 logo
10th Annual Best in Biz Awards 2020 Winner logo
Frost & Sullivan 2020 Best Practices Award Global Distributed Energy Company of the Year Award badge
BBJ Presents Boston Business Journal 2020 Middle Market Leaders logo
2020 Top Solar Contractors logo
2020 Smart Energy Decisions Innovation Awards 2020 logo
Environment + Energy LEADER Top Project 2020 badge
American City & County's 2019 Crown Communities logo