Company lists · Data refreshed September 2026

Top 25 Climate-focused investment firms based in the United States

Name: Climate-focused investment firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 1,030 companies tracked

RevenueBase identified 1,030 climate-focused investment firms headquartered in the United States as of September 2026 and tracks 16,782 professional contacts across them, including 7,387 with verified work emails. New York is the largest hub.

This list covers climate-focused investment firms headquartered in the 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 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

1,030Companies

16,782Contacts tracked

7,387Verified emails

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The 25 largest climate-focused investment firms based in the United States

Ranked by team size

Top 25 of 1,030 climate-focused investment firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to climate-focused investment firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	J.P. Morgan Asset Management	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	10001+	4,819 contacts →
	Indirect evidence “At J.P.” Source: RevenueBase Database · checked Sep 27, 2026
2	General Atlantic	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	501-1,000	820 contacts →
	Indirect evidence “General Atlantic is a leading global investor with more than four and a half decades of experience providing capital and strategic support to over 830 companies throughout its…” Source: RevenueBase Database · checked Sep 27, 2026
3	Agritecture	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	n/a	627 contacts →
	Partial evidence “Agritecture is a global advisory firm specializing in climate-smart agriculture and controlled environment agriculture (CEA).” Source: RevenueBase Database · checked Sep 27, 2026
4	3degrees Group, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	201-500	324 contacts →
	Partial evidence “3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Source: RevenueBase Database · checked Sep 27, 2026
5	Climate Policy Initiative	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	51-200	288 contacts →
	Indirect evidence “CPI is an analysis and advisory organization with deep expertise in finance and policy.” Source: RevenueBase Database · checked Sep 27, 2026
6	Anew Climate	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	201-500	200 contacts →
	Partial evidence “Anew Climate is a global leader of diverse climate solutions, bringing innovative products and services to the public and private sectors to help reduce or offset their carbon…” Source: RevenueBase Database · checked Sep 27, 2026
7	HASI	Indirect evidence	Annapolis, MD, United StatesHQ checked Sep 27, 2026	51-200	196 contacts →
	Indirect evidence “HASI invests in sustainable infrastructure assets advancing the energy transition.” Source: RevenueBase Database · checked Sep 27, 2026
8	Quantum Capital Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	51-200	173 contacts →
	Indirect evidence “Founded in 1998, Quantum Capital Group is a leading provider of private equity, credit, and venture capital to the global energy and energy transition industry, having managed…” Source: RevenueBase Database · checked Sep 27, 2026
9	Carbon Direct	Partial evidence	New York, United StatesHQ checked Sep 27, 2026	51-200	172 contacts →
	Partial evidence “Carbon Direct is a trusted energy and climate solutions company that combines world-class scientific expertise, technical rigor, and market insights to help clients achieve their…” Source: RevenueBase Database · checked Sep 27, 2026
10	Breakthrough Energy	Indirect evidence	Kirkland, United StatesHQ checked Sep 27, 2026	51-200	159 contacts →
	Indirect evidence “Breakthrough Energy backs companies developing the next generation of clean energy solutions.” Source: RevenueBase Database · checked Sep 27, 2026
11	Massachusetts Clean Energy Center	Partial evidence	Boston, MA, United StatesHQ checked Sep 27, 2026	51-200	149 contacts →
	Partial evidence “The Massachusetts Clean Energy Center is a state economic development agency dedicated to accelerating the growth of the clean energy and climatetech sector across the…” Source: RevenueBase Database · checked Sep 27, 2026
12	Greenbacker	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	141 contacts →
	Partial evidence “As a multi-strategy investment manager and independent power producer, Greenbacker Renewable Energy Company (Greenbacker) is empowering a sustainable world by connecting…” Source: RevenueBase Database · checked Sep 27, 2026
13	ECP Energy Capital Partners	Partial evidence	Summit, NJ, United StatesHQ checked Sep 27, 2026	51-200	123 contacts →
	Partial evidence “ECP (Energy Capital Partners) is an investor in critical infrastructure focused on electrification, decarbonization, reliability and sustainability.” Source: RevenueBase Database · checked Sep 27, 2026
14	ARA Partners	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	51-200	119 contacts →
	Partial evidence “Founded in 2017, Ara Partners is a global private markets firm focused on decarbonizing the industrial economy.” Source: RevenueBase Database · checked Sep 27, 2026
15	Cleancapital	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	106 contacts →
	Partial evidence “Speed and efficiency are the cornerstones of climate finance.” Source: RevenueBase Database · checked Sep 27, 2026
16	AXA Investment Managers	Partial evidence	New York City, NY, United StatesHQ checked Sep 27, 2026	10001+	105 contacts →
	Partial evidence “Equity and Fixed Income Products Sustainable investments (ESG) Alternative assets (e.g.” Source: RevenueBase Database · checked Sep 27, 2026
17	Parnassus Investments	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	51-200	93 contacts →
	Partial evidence “Since 1984, Parnassus Investments has invested differently.” Source: RevenueBase Database · checked Sep 27, 2026
18	S2g Investments	Strong evidence	Chicago, CA, United StatesHQ checked Sep 27, 2026	51-200	85 contacts →
	Strong evidence “S2G Investments is a multi-asset investment firm focused on scaling durable, market-defining businesses across food & agriculture, energy, and oceans.” Source: RevenueBase Database · checked Sep 27, 2026
19	OIC	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	11-50	80 contacts →
	Partial evidence “WE ARE CAPITAL SOLUTIONS PROVIDERS We’re building a diversified portfolio of investments, backed by hard asset collateral, supporting innovation in infrastructure.” Source: RevenueBase Database · checked Sep 27, 2026
20	Calvert Research And Management	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	79 contacts →
	Indirect evidence “Calvert Research and Management is a leader in Responsible Investing.” Source: RevenueBase Database · checked Sep 27, 2026
21	Enduring Planet	Partial evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	79 contacts →
	Partial evidence “Working capital and fractional financial services for Climate startups and SMBs.” Source: RevenueBase Database · checked Sep 27, 2026
22	Trillium Asset Management	Partial evidence	Boston, MA, United StatesHQ checked Sep 27, 2026	11-50	77 contacts →
	Partial evidence “Trillium Asset Management offers investment strategies and services that seek to advance humankind towards a global sustainable economy, a just society, and a better world.” Source: RevenueBase Database · checked Sep 27, 2026
23	Crc-Ib	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	11-50	67 contacts →
	Partial evidence “CRC-IB is a full-service investment bank providing industry-leading financial services across the energy transition.” Source: RevenueBase Database · checked Sep 27, 2026
24	Neos Partners	Strong evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	11-50	64 contacts →
	Strong evidence “Neos Partners is a middle-market investment firm focused on second-order investing in the energy transition and critical infrastructure sectors.” Source: RevenueBase Database · checked Sep 27, 2026
25	Knollwood Investment Advisory	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 27, 2026	11-50	63 contacts →
	Partial evidence “Knollwood Investment Advisory is a global investment firm located outside of Baltimore, Maryland.” Source: RevenueBase Database · checked Sep 27, 2026

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: climate-focused investment 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 climate-focused investment firms.
Partial evidence: Its own public description names part of climate-focused investment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate-focused investment 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 25 of 1,030 climate-focused investment firms based in the United States

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Climate-focused investment firms based in the United States at a glance

As of Sep 27, 2026

44.0%Verified-email coverage

16.3Average contacts per company

1-10Median size (employees)

15.4%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

714

11-50

251

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,030 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 climate-focused investment 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 the United States whose own description of what they do matches “climate-focused investment 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 climate-focused investment 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 climate-focused investment firms, and records with no verified work email. Companies headquartered outside United States 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, 7,387 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 27, 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.

Climate-focused investment firms by metro

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 climate-focused investment 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 climate-focused investment firms are there based in the United States?

RevenueBase identified 1,030 climate-focused investment firms headquartered in the 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?

J.P. Morgan Asset Management, headquartered in New York, tops this list with the largest team on record.

Which city has the most climate-focused investment firms?

New York leads with 159 headquartered companies, followed by San Francisco (78) and Houston (42).

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 7,387 verified decision-maker contacts tracked across these 1,030 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 27, 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.