Company lists · Data refreshed October 2026

Top 25 Energy efficiency research companies based in the United States

Name: Energy efficiency research companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 12, 2026 333 companies tracked

RevenueBase identified 333 company matches for energy efficiency research companies associated with the United States as of October 2026 and tracks 5,627 professional contacts across them, including 2,412 with verified work emails. New York is the largest hub.

This list covers company matches for energy efficiency research companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 12, 2026 How this list was built

333Companies

5,627Contacts tracked

2,412Verified emails

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The 25 largest energy efficiency research companies based in the United States

Ranked by team size

Top 25 of 333 company matches for energy efficiency research companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Oct 12, 2026	1,001-5,000	2,206 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
2	Energy Recovery, INC	Exact match	San Leandro, CA, United StatesHQ recorded Oct 12, 2026	201-500	222 contacts →
	Exact match “Energy Recovery (Nasdaq: ERII) designs and manufactures world-class energy-saving technology for critical infrastructure that communities rely on every day, driving a more…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
3	Bright Power	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	51-200	201 contacts →
	Exact match “Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4	Melink Corporation	Exact match	Milford, OH, United StatesHQ recorded Oct 12, 2026	51-200	131 contacts →
	Exact match “We are a global provider of energy efficiency solutions for commercial buildings with five business offerings: HVAC Testing, Adjusting & Balancing, Intelli-Hood® Kitchen…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5	PSD	Exact match	Ithaca, NY, United StatesHQ recorded Oct 12, 2026	51-200	117 contacts →
	Exact match “PSD is an energy efficiency services and technology company.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6	The American Council For An Energy-Efficient Economy Aceee	Exact match	Washington, DC, United StatesHQ recorded Oct 12, 2026	51-200	91 contacts →
	Exact match “The American Council for an Energy-Efficient Economy a nonprofit research organization, develops policies to reduce energy waste and combat climate change.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7	Calnetix Technologies	Exact match	Cypress, CA, United StatesHQ recorded Oct 12, 2026	51-200	82 contacts →
	Exact match “Calnetix Technologies, LLC, is focused on "Innovation That Drives Industries".” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8	Energy 350, INC	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	51-200	64 contacts →
	Exact match “Energy 350 takes pride in performing high quality energy studies and energy efficiency related services for end users as well as program administrators.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9	Kelvin	Exact match	Brooklyn, United StatesHQ recorded Oct 12, 2026	11-50	54 contacts →
	Exact match “Decarbonizing the World's Legacy Buildings Kelvin’s technology reduces wasted energy, saves money, and enables pinpoint temperature control for apartments in legacy buildings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
10	Bes-Tech, INC	Exact match	Omaha, NE, United StatesHQ recorded Oct 12, 2026	11-50	54 contacts →
	Exact match “Bes-Tech has been a leader in energy efficient building systems technologies for the past nine years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11	QUEST	Exact match	Berkeley, CA, United StatesHQ recorded Oct 12, 2026	11-50	54 contacts →
	Exact match “QuEST provides cost effective energy efficiency services to utility and non-utility clients with a focus on the commercial and industrial sectors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12	Skill Demand	Exact match	Carmel, IN, United StatesHQ recorded Oct 12, 2026	51-200	53 contacts →
	Exact match “Skill Demand Energy partners with utilities, local and state governments, and other entities that provide solutions to reduce America’s energy usage.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13	FCI Management	Exact match	Cerritos, CA, United StatesHQ recorded Oct 12, 2026	51-200	52 contacts →
	Exact match “FCI provides impactful energy solutions at every point on the delivery chain-from system design to program development to marketing and installation.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
14	Energy Source	Exact match	Smithfield, RI, United StatesHQ recorded Oct 12, 2026	51-200	47 contacts →
	Exact match “Energy Source helps organizations simplify energy efficiency, electrification, EV charging, distributed energy, and electrical infrastructure projects.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15	Highmark Building Efficiency	Exact match	New York, NY, United StatesHQ recorded Oct 12, 2026	11-50	46 contacts →
	Exact match “HIGHMARK’s mission is to support building sustainability, electrification, decarbonization and cost savings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16	NEW Buildings Institute	Exact match	Portland, OR, United StatesHQ recorded Oct 12, 2026	11-50	45 contacts →
	Exact match “New Buildings Institute (NBI) is a nonprofit organization working to improve the energy performance of commercial buildings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17	Alliance To Save Energy	Exact match	Washington, DC, United StatesHQ recorded Oct 12, 2026	11-50	44 contacts →
	Exact match “The Alliance to Save Energy provides access to the most influential coalition of bipartisan government, agency, and business leaders in energy efficiency.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18	Brower Mechanical	Exact match	Rocklin, CA, United StatesHQ recorded Oct 12, 2026	51-200	43 contacts →
	Exact match “We provide energy solutions for homes and businesses.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
19	Institute For Market Transformation	Exact match	Washington, DC, United StatesHQ recorded Oct 12, 2026	11-50	42 contacts →
	Exact match “The Institute for Market Transformation (IMT) is a national nonprofit organization focused on increasing energy efficiency in buildings to save money, drive economic growth and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20	Tri-State Energy	Exact match	New Brunswick, NJ, United StatesHQ recorded Oct 12, 2026	11-50	40 contacts →
	Exact match “Tri-State Energy (formerly Tri-State Light & Energy) is an engineering firm with over 40 years of experience specializing in energy efficiency consulting and implementation…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21	For Energy	Exact match	Tempe, AZ, United StatesHQ recorded Oct 12, 2026	11-50	39 contacts →
	Exact match “FOR Energy is committed to being your single source for living a more sustainable and energy-efficient lifestyle.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22	Energy Industries Corporation	Exact match	Honolulu, HI, United StatesHQ recorded Oct 12, 2026	51-200	38 contacts →
	Exact match “Energy Industries Corporation specializes in energy efficiency and renewable energy programs for the commercial, industrial and institutional sectors, primarily focusing on…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23	Colite Technologies	Exact match	Columbia, SC, United StatesHQ recorded Oct 12, 2026	11-50	36 contacts →
	Exact match “We help commercial and industrial clients utilize energy more efficiently and expand their use of renewable energy technologies.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24	Ecometric	Exact match	Exton, PA, United StatesHQ recorded Oct 12, 2026	11-50	35 contacts →
	Exact match “EcoMetric is an energy conservation consulting firm focusing on constructive research to influence consumer energy consumption behavior and choices.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25	Nv5 NET Zero	Exact match	Hollywood, FL, United StatesHQ recorded Oct 12, 2026	11-50	35 contacts →
	Exact match “NV5 Net Zero is a leading global energy efficiency consultancy.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy efficiency research companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 333 energy efficiency research companies based in the United States

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Energy efficiency research companies based in the United States at a glance

As of Oct 12, 2026

42.9%Verified-email coverage

16.9Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Oct 12, 2026Page data refreshed

Companies by employee count

1-10

180

11-50

120

51-200

201-500

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 333 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “energy efficiency research companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,412 professional contacts with verified work emails across the full matched dataset. 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 October 12, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “energy efficiency research companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy efficiency research companies are there based in the United States?

RevenueBase identified 333 company matches for energy efficiency research companies associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Clearesult tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most energy efficiency research companies?

New York leads with 12 company records, followed by Washington (7) and Las Vegas (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,412 professional contacts with verified work emails tracked across these 333 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 12, 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 SmartSearch, 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.