When was Ameresco founded?

Ameresco was founded in 2000 and raised its 1st funding round 25 years after it was founded.

Where is Ameresco located?

Ameresco is headquartered in Framingham, United States.

How many employees does Ameresco have?

As of Aug 31, 2026, the latest employee count at Ameresco is 1489.

Is Ameresco a funded company?

Ameresco is a funded company, having raised an undisclosed amount across 2 funding rounds to date. The company's 1st funding round was a $***** Grant (prize money) round, raised on Jun 27, 2025.

When was the latest funding round of Ameresco?

Ameresco's latest funding was a $***** Grant (prize money) round on Oct 27, 2025, with participation from 1 investor.

What is the annual revenue of Ameresco?

Annual revenue of Ameresco is more than $1B as on Dec 31, 2024

Where does Ameresco rank among its competitors?

Ameresco ranks 9th amongst 2288 active competitors, of which 111 are funded. It stands 9th in terms of total funding among its competitors. The most recent competitor to raise funding was Origis Energy, which secured $900M in Jun, 2026.

Who are the top competitors of Ameresco?

Ameresco's top competitors include Enel X, Invenergy and PowerFlex. Among them, Origis Energy secured the most recent funding round in June, 2026.

Ameresco - 2026 Company Profile, Funding, Competitors & Financials

Company Details

Provider of integrated energy infrastructure, power generation, and modernization solutions. Services include the development, design, construction, and operation of systems that support power generation, battery energy storage, microgrids, and grid infrastructure. The organization offers facility upgrades, smart building technologies, and water management systems to improve operational efficiency and energy resilience. By combining engineering expertise with project financing and construction management, the firm addresses the requirements of diverse public and private sector clients. Support spans the full project lifecycle, facilitating the integration of renewable energy resources and the optimization of aging physical infrastructure to meet modern demand.

Website: ameresco.com
Social
Email ID: *****@ameresco.com

Key Metrics

Founded Year

2000

Location

Framingham, United States

Stage

Public

Latest Funding Round

Grant (prize money), Oct 27, 2025, $*****

Investors

OSTI

Ranked

9^th among 2288 active competitors

Annual Revenue

$1B+ as on Dec 31, 2024

Employee Count

1,489 as on Aug 31, 2026

Investment & Acquisitions

Asacontrols & 8 more

Similar Companies

CleanMax & 1565 more

Exit Details

Public

View Ameresco's full profile

Ameresco is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
AMERESCO, INC. CIN: 1488139 , United States, Active	Apr 24, 2000	$1B+ (As on Dec 31, 2024)	1126 (As on Dec 31, 2022)	-

Ameresco got listed on Jul 22, 2010.

Click here to take a look at Ameresco's IPO in detail

Ameresco has raised funding over 2 rounds. Its first funding round was on Jun 27, 2025. Its latest funding round was a Grant (prize money) round on Oct 27, 2025 for $*****. 1 investor participated in its latest round. Ameresco has 1 institutional investor.

Here is the list of recent funding rounds of Ameresco:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Oct 27, 2025	3983192	Grant (prize money)	8549850	5088101	5814690	5313056
Jun 27, 2025	8713336	Grant (prize money)	4685527	8178034	7224990	OSTI

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Ameresco's employee count trend

Ameresco has 1,489 employees as of Aug 26. Here is Ameresco's employee count trend over the years:

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Top competitors of Ameresco include Enel X, Invenergy and PowerFlex. Here is the list of Top 10 competitors of Ameresco, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Enel X 2001, Boston (United States), Acquired	Developer of utility-scale renewable energy projects	$168M	Foundation Capital, Glen Capital & 9 others	75/100
2nd	Invenergy 2000, Chicago (United States), Acquired	Developer and operator of sustainable energy solutions	$575M	Blackstone, CDPQ & 6 others	72/100
3rd	PowerFlex 2017, San Diego (United States), Acquired	Provider of renewable energy project development services	$100M	Wells Fargo Innovation Incubator, Manulife Investment Management ... & 3 others	69/100
4th	Southern 1912, Atlanta (United States), Public	Provider of energy utility, natural gas, and communications technology fund	-	DOE, Alliance Holdings & 2 others	69/100
5th	Origis Energy 2008, Miami (United States), Acquired	Utility Scale and commercial solar project developer	$149M	Nomura, CIT & 10 others	66/100
6th	Hillman Group 1964, Cincinnati (United States), Public	Provider of hardware and home improvement products to retail markets	-	HarbourVest Partners, Rotunda Capital Partners ... & 8 others	62/100
7th	NextEra Energy Resources 1925, Juno Beach (United States), Public	Developer of wind and solar energy power projects	-	OSTI	62/100
8th	Longroad Energy 2016, San Francisco (United States), Series B	Developer of utility-scale wind and solar power projects	$500M	MEAG, PenSam & 6 others	61/100
9th	Ameresco 2000, Framingham (United States), Public	Provider of integrated energy infrastructure, power generation, and modernization solutions	-	OSTI	61/100
10th	Idaho Power 1916, Boise (United States), Funding Raised	Solar panel & products installation company	-	OSTI, USGS	60/100

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Ameresco has not made any investments yet. Ameresco has made 9 acquisitions.

Here is the list of latest three $acquisitions:

Filter this list

Date of Investment/Acquisition	Type	Company Name	Founded Year	Location
Mar 03, 2025	Acquisition	Asacontrols		Harrison (United States)
Feb 27, 2023	Acquisition	ENERQOS	2006	Milan (Italy)
Jan 16, 2019	Acquisition	Maximum Solar	2000	Acton (United States)