Company lists · Data refreshed September 2026

Top 25 Climate research organizations based in the United States

Name: Climate research organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 552 companies tracked

RevenueBase identified 552 climate research organizations headquartered in the United States as of September 2026 and tracks 13,617 professional contacts across them, including 5,653 with verified work emails. Washington is the largest hub.

This list covers climate research organizations 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 19, 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 19, 2026 86% judged on-target in blind review

552Companies

13,617Contacts tracked

5,653Verified emails

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The 25 largest climate research organizations based in the United States

Ranked by team size

Top 25 of 552 climate research organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to climate research organizations: 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	World Resources Institute	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,359 contacts →
	Partial evidence “WRI works to improve people’s lives, protect and restore nature and stabilize the climate.” Source: RevenueBase Database · checked Sep 19, 2026
2	Environmental Defense Fund	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,352 contacts →
	Partial evidence “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Source: RevenueBase Database · checked Sep 19, 2026
3	Science Systems And Applications, INC Ssai	Indirect evidence	Lanham, MD, United StatesHQ checked Sep 19, 2026	501-1,000	541 contacts →
	Indirect evidence “Science Systems and Applications, Inc.(SSAI) is a leading provider of science, engineering, and technology solutions for customers who seek new frontiers.” Source: RevenueBase Database · checked Sep 19, 2026
4	Lynker	Indirect evidence	Leesburg, VA, United StatesHQ checked Sep 19, 2026	501-1,000	363 contacts →
	Indirect evidence “Lynker delivers innovative solutions to support global environmental security and economic prosperity as a trusted partner to governments, communities, and industry.” Source: RevenueBase Database · checked Sep 19, 2026
5	Climate Policy Initiative	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
6	Woodwell Climate Research Center	Strong evidence	Falmouth, MA, United StatesHQ checked Sep 19, 2026	51-200	156 contacts →
	Strong evidence “Woodwell Climate Research Center conducts science for solutions at the nexus of climate, people, and nature-solutions that are urgently needed to propel us toward a more…” Source: RevenueBase Database · checked Sep 19, 2026
7	Blue Marble Space Institute Of Science	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	11-50	123 contacts →
	Partial evidence “Blue Marble Space Institute of Science is a 501(c)(3) non-profit research institute with an interdisciplinary approach to studying the relationship between Earth system science…” Source: RevenueBase Database · checked Sep 19, 2026
8	Groundwork Renewables	Indirect evidence	Sand City, CA, United StatesHQ checked Sep 19, 2026	51-200	116 contacts →
	Indirect evidence “GroundWork Renewables is the leading provider of high-quality meteorological (MET) data and ISO-accredited PV lab testing to give solar plant owners complete situational awareness…” Source: RevenueBase Database · checked Sep 19, 2026
9	Baron Weather	Indirect evidence	Huntsville, AL, United StatesHQ checked Sep 19, 2026	51-200	112 contacts →
	Indirect evidence “Many organizations are responsible for dealing with weather impacts that affect their bottom line.” Source: RevenueBase Database · checked Sep 19, 2026
10	The Water Institute	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 19, 2026	51-200	92 contacts →
	Partial evidence “The Water Institute is an independent, non-profit, applied research institution advancing science and developing integrated methods to solve complex environmental and societal…” Source: RevenueBase Database · checked Sep 19, 2026
11	The American Council For An Energy-Efficient Economy Aceee	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	91 contacts →
	Strong evidence “The American Council for an Energy-Efficient Economy a nonprofit research organization, develops policies to reduce energy waste and combat climate change.” Source: RevenueBase Database · checked Sep 19, 2026
12	Rhodium Group	Partial evidence	New York, DC, United StatesHQ checked Sep 19, 2026	51-200	85 contacts →
	Partial evidence “Rhodium Group is an independent research provider with deep expertise in policy and economic analysis.” Source: RevenueBase Database · checked Sep 19, 2026
13	Jupiter Intelligence	Partial evidence	San Mateo, CA, United StatesHQ checked Sep 19, 2026	51-200	83 contacts →
	Partial evidence “Jupiter is the trusted leader in climate risk analytics for organizations looking to strengthen their climate resilience.” Source: RevenueBase Database · checked Sep 19, 2026
14	First Street	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	81 contacts →
	Partial evidence “First Street™ is the standard for climate risk financial modeling.” Source: RevenueBase Database · checked Sep 19, 2026
15	Climate Central, INC	Strong evidence	Princeton, NJ, United StatesHQ checked Sep 19, 2026	11-50	73 contacts →
	Strong evidence “Climate Central is a nonprofit organization that researches and reports the science and impacts of climate change.” Source: RevenueBase Database · checked Sep 19, 2026
16	GRIST	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	51-200	69 contacts →
	Partial evidence “Grist is a nonprofit, independent media organization dedicated to reporting on climate change.” Source: RevenueBase Database · checked Sep 19, 2026
17	Center For Climate And Energy Solutions C2es	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Partial evidence “The Center for Climate and Energy Solutions (C2ES) is an independent, nonpartisan, nonprofit organization working to forge practical solutions to climate change.” Source: RevenueBase Database · checked Sep 19, 2026
18	Project Drawdown	Partial evidence	St Paul, MN, United StatesHQ checked Sep 19, 2026	11-50	67 contacts →
	Partial evidence “Project Drawdown is the world’s leading guide to science-based climate solutions.” Source: RevenueBase Database · checked Sep 19, 2026
19	AMBEE	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 19, 2026	11-50	61 contacts →
	Partial evidence “Ambee is a leading provider of global climate data and climate-based solutions.” Source: RevenueBase Database · checked Sep 19, 2026
20	Coho, An ERM Group Company	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 19, 2026	51-200	59 contacts →
	Partial evidence “Coho, an ERM Group company, is a global climate adviser dedicated to helping clients navigate complexity and take ambitious steps on their climate journey.” Source: RevenueBase Database · checked Sep 19, 2026
21	ONE Health Trust	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	59 contacts →
	Indirect evidence “We live in an interconnected world: the health and well-being of the environment, animals, and humans are intertwined in ways that are increasingly more apparent.” Source: RevenueBase Database · checked Sep 19, 2026
22	ANDES	Partial evidence	Alameda, CA, United StatesHQ checked Sep 19, 2026	11-50	58 contacts →
	Partial evidence “Andes empowers biology to enable positive action against climate change.” Source: RevenueBase Database · checked Sep 19, 2026
23	Institute For Sustainable Communities	Partial evidence	Montpelier, VT, United StatesHQ checked Sep 19, 2026	51-200	55 contacts →
	Partial evidence “ISC is an international, non-profit organization that works to support communities by creating, implementing, and scaling equitable climate change solutions for communities at the…” Source: RevenueBase Database · checked Sep 19, 2026
24	I. M. Systems Group Inc. Imsg	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 19, 2026	201-500	54 contacts →
	Indirect evidence “I.M.” Source: RevenueBase Database · checked Sep 19, 2026
25	Inside Climate News	Indirect evidence	Brooklyn, United StatesHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “Pulitzer Prize-winning, nonpartisan reporting on the biggest crisis facing our planet.” Source: RevenueBase Database · checked Sep 19, 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 research organizations. 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 research organizations.
Partial evidence: Its own public description names part of climate research organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate research organizations. 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 552 climate research organizations based in the United States

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Climate research organizations based in the United States at a glance

As of Sep 19, 2026

41.5%Verified-email coverage

24.7Average contacts per company

11-50Median size (employees)

8.0%Largest-city concentration · Washington

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

275

11-50

174

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 552 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 research organizations, 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 research organizations”. 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 research organizations), 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 research organizations, 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, 5,653 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 19, 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 research organizations by metro

Climate research organizations in Washington44
Climate research organizations in New York39

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 research organizations, 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 research organizations are there based in the United States?

RevenueBase identified 552 climate research organizations 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?

World Resources Institute, headquartered in Washington, tops this list with the largest team on record.

Which city has the most climate research organizations?

Washington leads with 44 headquartered companies, followed by New York (39) and Los Angeles (18).

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 5,653 verified decision-maker contacts tracked across these 552 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 19, 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.