Company lists · Data refreshed September 2026
Top 21 Green energy private equity firms based in Boston, United States
RevenueBase identified 31 green energy private equity firms headquartered in Boston, United States as of September 2026 and tracks 728 professional contacts across them, including 379 with verified work emails. Across the United States, New York is the largest hub for this category (133 companies); Boston has 31.
This list covers green energy private equity firms headquartered in Boston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 21 largest green energy private equity firms based in Boston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 210 contacts → | ||||
Partial evidence “Founded in 2016, Longroad Energy is a U.S-based energy company focused on developing and operating wind, solar, storage, and data center projects throughout North America.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 125 contacts → | ||||
Partial evidence “BlueWave is a mission-driven clean energy developer, owner, and operator building solar and energy storage solutions that strengthen the electric grid and deliver long-term grid…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 92 contacts → | ||||
Partial evidence “Advanced Power is a privately owned company that develops, owns, and manages modern power generation and related infrastructure projects throughout Europe and North America.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 89 contacts → | ||||
Strong evidence “Headquartered in Boston, Massachusetts, Taurus is a global real estate private equity firm with over 45 years of experience as a general partner, investor, and operator.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 54 contacts → | ||||
Partial evidence “Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 26 contacts → | ||||
Partial evidence “Kearsarge Energy is a vertically integrated renewable energy project development and finance company that owns and operates its projects.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 25 contacts → | ||||
Partial evidence “MCJ is an early-stage fund for the energy and industry transition and the inevitable impacts of climate change.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Partial evidence “CCA Group, LLC is a privately held boutique financial advisory firm based in Boston that provides premier capital markets and advisory services to companies active primarily in…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 12 contacts → | ||||
Strong evidence “Founded in 2013, WAVE Equity Partners is an independent sustainability-focused private investment firm that makes investments in early-growth companies whose proven clean…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 12 contacts → | ||||
Partial evidence “RockPort Capital is a multi-stage venture capital firm that invests in the areas of alternative and traditional energy, mobility, and sustainability.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Partial evidence “Energetic Capital was created to catalyze deployment of renewable energy with a focus on sub-investment grade and unrated credit risks.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Partial evidence “WindSail Capital Group is a leading provider of growth capital to companies within the clean energy economy.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 contacts → | ||||
Partial evidence “JBRI Holdings is a Real Estate, Clean Energy and Digital investment organization with assets throughout the Northeast United States.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Strong evidence “EMI is a privately held energy company with a more than 40-year track record of developing, financing, constructing and operating clean energy projects.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “Welcome to Millennium Capital, a division of Millennium Management Corp.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Strong evidence “o Bio: Mario San Jacinto is a seasoned private equity and investment manager with +25-year international experience mainly working alongside with family offices.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Partial evidence “North River Capital Advisors is the leader in providing investment banking services to small and mid cap companies in the Energy Transition + Sustainability Sector.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Partial evidence “Rivermoor Energy provides clean energy development, planning, financing, and investment solutions to corporate, commercial, utility, government and institutional (higher…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 contacts → | ||||
Partial evidence “Impact Investing at the Fulcrum of Technology & Environment ® Renewable Energy | Energy Access | Smart Grid | Smart Buildings | IOT | Robotics | Artificial Intelligence | AR/VR |…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Indirect evidence “Climate Venture Partners is currently raising a pre-seed round for Applied Bioplastics.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Partial evidence “Snow Bull Capital is a long-biased green and high technology hedge fund.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: green energy private equity firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names green energy private equity firms.
- Partial evidence
- Its own public description names part of green energy private equity firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name green energy private equity firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 21 of 31 green energy private equity firms based in Boston, United States
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Green energy private equity firms based in Boston, United States at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 31 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among green energy private equity firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Boston, United States whose own description of what they do matches “green energy private equity firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names green energy private equity firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among green energy private equity firms, and records with no verified work email. Companies headquartered outside Boston are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 379 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Green energy private equity firms by metro in the United States
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names green energy private equity firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many green energy private equity firms are there based in Boston, United States?
RevenueBase identified 31 green energy private equity firms headquartered in Boston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Longroad Energy, headquartered in Boston, tops this list with the largest team on record.
Which city in the United States has the most green energy private equity firms?
New York leads the United States with 133 headquartered companies, followed by Houston (94) and Dallas (50). Boston has 31.
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 379 verified decision-maker contacts tracked across these 31 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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