Company lists · Data refreshed September 2026

Top 25 Power efficiency auditing companies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 881 companies tracked

RevenueBase identified 881 power efficiency auditing companies headquartered in the United States as of September 2026 and tracks 11,762 professional contacts across them, including 4,856 with verified work emails. New York is the largest hub.

This list covers power efficiency auditing companies 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 20, 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 20, 2026 86% judged on-target in blind review

881Companies

11,762Contacts tracked

4,856Verified emails

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The 25 largest power efficiency auditing companies based in the United States

Ranked by team size

Top 25 of 881 power efficiency auditing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to power efficiency auditing companies: 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 20, 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 20, 2026
2	TRIO	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	201-500	383 contacts →
	Indirect evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 20, 2026
3	NUS Consulting Group	Indirect evidence	Park Ridge, NJ, United StatesHQ checked Sep 20, 2026	201-500	336 contacts →
	Indirect evidence “National Utility Service, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
4	Cascade Energy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	201-500	288 contacts →
	Indirect evidence “At Cascade Energy, we believe in better.” Source: RevenueBase Database · checked Sep 20, 2026
5	PEG	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 20, 2026	201-500	214 contacts →
	Indirect evidence “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Source: RevenueBase Database · checked Sep 20, 2026
6	Dalkia Energy Solutions	Partial evidence	Beverly, MA, United StatesHQ checked Sep 20, 2026	201-500	210 contacts →
	Partial evidence “Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Source: RevenueBase Database · checked Sep 20, 2026
7	Bright Power	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	205 contacts →
	Strong evidence “Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Source: RevenueBase Database · checked Sep 20, 2026
8	Energy Management Collaborative EMC	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	201-500	193 contacts →
	Partial evidence “EMC manages and scales turnkey energy efficiency solutions for Fortune 500 clients across their North American portfolios.” Source: RevenueBase Database · checked Sep 20, 2026
9	Concord Engineering Group, INC	Indirect evidence	Voorhees, NJ, United StatesHQ checked Sep 20, 2026	51-200	135 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
10	Sain Engineering Associates INC	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 20, 2026	51-200	134 contacts →
	Indirect evidence “Sain Engineering Associates, Inc.(SEA) is a U.S.” Source: RevenueBase Database · checked Sep 20, 2026
11	Synergy Companies	Partial evidence	Fresno, CA, United StatesHQ checked Sep 20, 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 20, 2026
12	Michaels Energy- An Inc. 5000 Company	Indirect evidence	La Crosse, WI, United StatesHQ checked Sep 20, 2026	51-200	121 contacts →
	Indirect 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 20, 2026
13	Melink Corporation	Partial evidence	Milford, OH, United StatesHQ checked Sep 20, 2026	51-200	116 contacts →
	Partial evidence “We are a global provider of energy efficiency solutions for commercial buildings with five business offerings: HVAC Testing, Adjusting & Balancing, Intelli-Hood® Kitchen…” Source: RevenueBase Database · checked Sep 20, 2026
14	PSD	Partial evidence	Ithaca, NY, United StatesHQ checked Sep 20, 2026	51-200	112 contacts →
	Partial evidence “PSD is an energy efficiency services and technology company.” Source: RevenueBase Database · checked Sep 20, 2026
15	KW Engineering	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 20, 2026	51-200	97 contacts →
	Indirect evidence “In 1998, I started kW Engineering as a two-person firm with a singular vision: to become the leading technical experts at saving money in buildings by saving energy and water.” Source: RevenueBase Database · checked Sep 20, 2026
16	Optimum Energy	Partial evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	51-200	86 contacts →
	Partial evidence “With 20 years of experience and 300+ plants and institutions served globally, nobody understands energy infrastructure, efficiency, and financial opportunity quite like Optimum…” Source: RevenueBase Database · checked Sep 20, 2026
17	MD Energy Advisors	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	11-50	70 contacts →
	Indirect evidence “Since 2010, MD Energy Advisors (MDEA) has been infusing art into energy by creating a dynamic customer experience that makes energy choices simple for everyone.” Source: RevenueBase Database · checked Sep 20, 2026
18	GSE	Indirect evidence	La Jolla, CA, United StatesHQ checked Sep 20, 2026	51-200	67 contacts →
	Indirect evidence “GSE is dedicated to leading the world, and our clients, toward a more sustainable future.” Source: RevenueBase Database · checked Sep 20, 2026
19	Abode Energy Management	Partial evidence	Concord, MA, United StatesHQ checked Sep 20, 2026	11-50	64 contacts →
	Partial evidence “Abode Energy Management is an energy consulting firm driving efficiency improvements for New England’s built environment.” Source: RevenueBase Database · checked Sep 20, 2026
20	SEMCO	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 20, 2026	n/a	64 contacts →
	Indirect evidence “If your business is interested in cutting energy costs and securing little known incentives to help fund initial project costs, SEMCO can help you.” Source: RevenueBase Database · checked Sep 20, 2026
21	Entegrity	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 20, 2026	51-200	62 contacts →
	Indirect 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 20, 2026
22	Energy 350, INC	Partial evidence	Portland, OR, United StatesHQ checked Sep 20, 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 20, 2026
23	Staples Energy	Indirect evidence	Pewaukee, WI, United StatesHQ checked Sep 20, 2026	51-200	59 contacts →
	Indirect evidence “Staples Energy helps commercial and residential customers, places of worship, and public facilities save hundreds of millions of kilowatt hours of energy.” Source: RevenueBase Database · checked Sep 20, 2026
24	Partner Energy	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	51-200	57 contacts →
	Indirect evidence “Partner Energy, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
25	Energy Management Systems, INC	Partial evidence	Exton, PA, United StatesHQ checked Sep 20, 2026	51-200	57 contacts →
	Partial evidence “With over 40 years of experience, Energy Management Systems is one of the premier providers of Energy and Efficiency solutions to the Commercial and Residential Real Estate…” Source: RevenueBase Database · checked Sep 20, 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: power efficiency auditing companies. 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 power efficiency auditing companies.
Partial evidence: Its own public description names part of power efficiency auditing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power efficiency auditing companies. 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 881 power efficiency auditing companies based in the United States

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Power efficiency auditing companies based in the United States at a glance

As of Sep 20, 2026

41.3%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

484

11-50

293

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 881 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 power efficiency auditing companies, 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 “power efficiency auditing companies”. 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 power efficiency auditing companies), 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 power efficiency auditing companies, 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, 4,856 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 20, 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.

Power efficiency auditing companies by metro

Power efficiency auditing companies in New York37

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 power efficiency auditing companies, 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 power efficiency auditing companies are there based in the United States?

RevenueBase identified 881 power efficiency auditing companies 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 power efficiency auditing companies?

New York leads with 37 headquartered companies, followed by Houston (17) and Chicago (14).

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 4,856 verified decision-maker contacts tracked across these 881 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 20, 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.