Company lists · Data refreshed September 2026

Top 25 Energy conservation organizations based in the United States

Name: Energy conservation 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 15, 2026 592 companies tracked

RevenueBase identified 592 energy conservation organizations headquartered in the United States as of September 2026 and tracks 9,056 professional contacts across them, including 3,716 with verified work emails. New York is the largest hub.

This list covers energy conservation 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 15, 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 15, 2026 86% judged on-target in blind review

592Companies

9,056Contacts tracked

3,716Verified emails

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The 25 largest energy conservation organizations based in the United States

Ranked by team size

Top 25 of 592 energy conservation organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to energy conservation 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	Clearesult	Partial evidence	Austin, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,121 contacts →
	Partial evidence “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Source: RevenueBase Database · checked Sep 15, 2026
2	VEIC	Partial evidence	Winooski, VT, United StatesHQ checked Sep 15, 2026	201-500	326 contacts →
	Partial evidence “For 40 years, VEIC has helped energy leaders nationwide meet their clean energy goals.” Source: RevenueBase Database · checked Sep 15, 2026
3	CMC Energy Services	Strong evidence	Fort Washington, PA, United StatesHQ checked Sep 15, 2026	201-500	252 contacts →
	Strong evidence “CMC Energy Services is a woman-owned full-service energy efficiency company with nearly 50 years of experience delivering value-based energy conservation services.” Source: RevenueBase Database · checked Sep 15, 2026
4	Richard Heath & Associates, Inc. RHA	Partial evidence	Fresno, CA, United StatesHQ checked Sep 15, 2026	501-1,000	230 contacts →
	Partial evidence “Now part of Resource Innovations, RHA will expand its team to over 1,100 professionals, broadening expertise and offering clients additional solutions in energy storage and…” Source: RevenueBase Database · checked Sep 15, 2026
5	Center For Energy And Environment	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 15, 2026	51-200	203 contacts →
	Partial evidence “CEE is a community-based clean energy nonprofit with special expertise in energy efficiency that stretches back 40 years.” Source: RevenueBase Database · checked Sep 15, 2026
6	Ever-Green Energy	Strong evidence	Saint Paul, MN, United StatesHQ checked Sep 15, 2026	201-500	191 contacts →
	Strong evidence “Ever-Green Energy is a recognized leader in energy conservation and the use of renewable energy.” Source: RevenueBase Database · checked Sep 15, 2026
7	Slipstream	Indirect evidence	Madison, WI, United StatesHQ checked Sep 15, 2026	51-200	146 contacts →
	Indirect evidence “We're a nonprofit headquartered in Madison, WI with an office in Chicago and remote staff across the U.S.” Source: RevenueBase Database · checked Sep 15, 2026
8	Synergy Companies	Partial evidence	Fresno, CA, United StatesHQ checked Sep 15, 2026	501-1,000	124 contacts →
	Partial evidence “Synergy Companies is the largest energy services companies in California and provides a comprehensive approach to energy efficiency and environmental solutions in both the…” Source: RevenueBase Database · checked Sep 15, 2026
9	Michaels Energy- An Inc. 5000 Company	Partial evidence	La Crosse, WI, United StatesHQ checked Sep 15, 2026	51-200	121 contacts →
	Partial evidence “Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.” Source: RevenueBase Database · checked Sep 15, 2026
10	Rewiring America	Indirect evidence	United StatesHQ checked Sep 15, 2026	51-200	120 contacts →
	Indirect evidence “Rewiring America puts American households at the center of an affordable, resilient, all-electric future.” Source: RevenueBase Database · checked Sep 15, 2026
11	Evergreen Energy Partners	Partial evidence	Portland, OR, United StatesHQ checked Sep 15, 2026	51-200	117 contacts →
	Partial evidence “As a team at Evergreen Energy Partners, we specialize in connecting utility customers with expert knowledge and innovative solutions for commercial, industrial, and residential…” Source: RevenueBase Database · checked Sep 15, 2026
12	Apadana	Strong evidence	New Hope, MN, United StatesHQ checked Sep 15, 2026	51-200	107 contacts →
	Strong evidence “Apadana was founded in 2013 by electrical and mechanical engineers who committed their expertise to delivering energy conservation and renewable energy generation solutions with a…” Source: RevenueBase Database · checked Sep 15, 2026
13	CET	Partial evidence	Northampton, MA, United StatesHQ checked Sep 15, 2026	51-200	103 contacts →
	Partial evidence “CET helps people and businesses save energy and reduce waste.” Source: RevenueBase Database · checked Sep 15, 2026
14	Earthlight Technologies	Strong evidence	Ellington, CT, United StatesHQ checked Sep 15, 2026	51-200	99 contacts →
	Strong evidence “Earthlight is a Solar and Energy Efficiency contractor dedicated to meeting people’s ecofriendly needs by providing them with quality energy conservation solutions.” Source: RevenueBase Database · checked Sep 15, 2026
15	Environment America	Indirect evidence	Denver, CO, United StatesHQ checked Sep 15, 2026	51-200	93 contacts →
	Indirect evidence “Every day, we see more heartbreaking evidence of the damage being done to our planet: climate change, plastic pollution, wildlife disappearing forever.” Source: RevenueBase Database · checked Sep 15, 2026
16	The American Council For An Energy-Efficient Economy Aceee	Partial evidence	Washington, DC, United StatesHQ checked Sep 15, 2026	51-200	91 contacts →
	Partial 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 15, 2026
17	Energy Coordinating Agency ECA	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 15, 2026	51-200	64 contacts →
	Partial evidence “The Energy Coordinating Agency (ECA), a non-profit, is a regional leader in the delivery of energy efficiency services for residential stock.” Source: RevenueBase Database · checked Sep 15, 2026
18	Entegrity	Strong evidence	Little Rock, AR, United StatesHQ checked Sep 15, 2026	51-200	62 contacts →
	Strong evidence “Entegrity is an energy services, sustainability and solar development company specializing in the implementation of energy conservation and renewable energy projects.” Source: RevenueBase Database · checked Sep 15, 2026
19	Resource Central	Partial evidence	Boulder, CO, United StatesHQ checked Sep 15, 2026	11-50	62 contacts →
	Partial evidence “We are Resource Central: determined to make conservation so simple that you don’t even realize you’re doing it.” Source: RevenueBase Database · checked Sep 15, 2026
20	Energy 350, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 15, 2026	51-200	60 contacts →
	Partial evidence “Energy 350 takes pride in performing high quality energy studies and energy efficiency related services for end users as well as program administrators.” Source: RevenueBase Database · checked Sep 15, 2026
21	Partner Energy	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 15, 2026	51-200	57 contacts →
	Partial evidence “Partner Energy, Inc.” Source: RevenueBase Database · checked Sep 15, 2026
22	Skill Demand	Partial evidence	Carmel, IN, United StatesHQ checked Sep 15, 2026	51-200	53 contacts →
	Partial evidence “Skill Demand Energy partners with utilities, local and state governments, and other entities that provide solutions to reduce America’s energy usage.” Source: RevenueBase Database · checked Sep 15, 2026
23	FCI Management	Partial evidence	Cerritos, CA, United StatesHQ checked Sep 15, 2026	51-200	53 contacts →
	Partial evidence “FCI provides impactful energy solutions at every point on the delivery chain-from system design to program development to marketing and installation.” Source: RevenueBase Database · checked Sep 15, 2026
24	MAYER	Partial evidence	Plano, TX, United StatesHQ checked Sep 15, 2026	51-200	52 contacts →
	Partial evidence “At Mayer, we are committed to revolutionizing the way energy is harnessed and consumed, delivering innovative solar and energy efficiency solutions to homes and businesses across…” Source: RevenueBase Database · checked Sep 15, 2026
25	Energy Source	Partial evidence	Smithfield, RI, United StatesHQ checked Sep 15, 2026	51-200	48 contacts →
	Partial evidence “Energy Source helps organizations simplify energy efficiency, electrification, EV charging, distributed energy, and electrical infrastructure projects.” Source: RevenueBase Database · checked Sep 15, 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: energy conservation 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 energy conservation organizations.
Partial evidence: Its own public description names part of energy conservation organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy conservation 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 592 energy conservation organizations based in the United States

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Energy conservation organizations based in the United States at a glance

As of Sep 15, 2026

41.0%Verified-email coverage

15.3Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · New York

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

347

11-50

176

51-200

201-500

501-1,000

1,001-5,000

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 592 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 energy conservation 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 “energy conservation 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 energy conservation 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 energy conservation 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, 3,716 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 15, 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.

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 energy conservation 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 energy conservation organizations are there based in the United States?

RevenueBase identified 592 energy conservation 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?

Clearesult, headquartered in Austin, tops this list with the largest team on record.

Which city has the most energy conservation organizations?

New York leads with 16 headquartered companies, followed by Los Angeles (11) and Portland (11).

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 3,716 verified decision-maker contacts tracked across these 592 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 15, 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.