Company lists · Data refreshed September 2026

Top 25 Enterprise energy management consultants based in the United States

Name: Enterprise energy management consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 4,264 companies tracked

RevenueBase identified 4,264 enterprise energy management consultants headquartered in the United States as of September 2026 and tracks 93,437 professional contacts across them, including 39,949 with verified work emails. Houston is the largest hub.

This list covers enterprise energy management consultants 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 28, 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 28, 2026 86% judged on-target in blind review

4,264Companies

93,437Contacts tracked

39,949Verified emails

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The 25 largest enterprise energy management consultants based in the United States

Ranked by team size

Top 25 of 4,264 enterprise energy management consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise energy management consultants: 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	Sargent & Lundy	Indirect evidence	Chicago, WY, United StatesHQ checked Sep 28, 2026	1,001-5,000	4,156 contacts →
	Indirect evidence “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Source: RevenueBase Database · checked Sep 28, 2026
2	Generac	Partial evidence	Waukesha, WI, United StatesHQ checked Sep 28, 2026	5,001-10,000	3,797 contacts →
	Partial evidence “Generac is the total energy solutions company powering a smarter world.” Source: RevenueBase Database · checked Sep 28, 2026
3	FTI	Partial evidence	Menasha, WI, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,741 contacts →
	Partial evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 28, 2026
4	Langan Engineering & Environmental Services	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,177 contacts →
	Indirect evidence “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Source: RevenueBase Database · checked Sep 28, 2026
5	Clearesult	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 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 28, 2026
6	Enercon Services, INC	Partial evidence	Kennesaw, GA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,865 contacts →
	Partial evidence “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Source: RevenueBase Database · checked Sep 28, 2026
7	Quorum Software	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,563 contacts →
	Partial evidence “Quorum Software is a leading provider of energy software worldwide powering growth and profitability for energy businesses by connecting people, workflows, and systems with…” Source: RevenueBase Database · checked Sep 28, 2026
8	Ameresco	Partial evidence	Framingham, MA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,383 contacts →
	Partial evidence “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Source: RevenueBase Database · checked Sep 28, 2026
9	Gulf Companies	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,046 contacts →
	Partial evidence “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
10	World Kinect	Strong evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	998 contacts →
	Strong evidence “Headquartered in Miami, Florida, World Kinect Corporation (NYSE: WKC) is a leading global energy management company, offering a broad suite of solutions across the energy product…” Source: RevenueBase Database · checked Sep 28, 2026
11	Willdan	Indirect evidence	Anaheim, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	851 contacts →
	Indirect evidence “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Source: RevenueBase Database · checked Sep 28, 2026
12	Percheron, LLC	Strong evidence	Katy, TX, United StatesHQ checked Sep 28, 2026	501-1,000	776 contacts →
	Strong evidence “Percheron streamlines energy infrastructure projects through a comprehensive EPCM (Engineering, Procurement, Construction Management) approach.” Source: RevenueBase Database · checked Sep 28, 2026
13	Energy Solutions	Strong evidence	Oakland, CA, United StatesHQ checked Sep 28, 2026	201-500	772 contacts →
	Strong evidence “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Source: RevenueBase Database · checked Sep 28, 2026
14	Resource Innovations	Partial evidence	Half Moon Bay, CA, United StatesHQ checked Sep 28, 2026	501-1,000	733 contacts →
	Partial evidence “Resource Innovations (RI) is an energy transformation firm.” Source: RevenueBase Database · checked Sep 28, 2026
15	Capco Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	715 contacts →
	Partial evidence “For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…” Source: RevenueBase Database · checked Sep 28, 2026
16	Albireo Energy	Partial evidence	Edison, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	669 contacts →
	Partial evidence “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Source: RevenueBase Database · checked Sep 28, 2026
17	Applied Consultants	Partial evidence	Longview, TX, United StatesHQ checked Sep 28, 2026	501-1,000	578 contacts →
	Partial evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 28, 2026
18	Soenergy International	Partial evidence	Doral, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	567 contacts →
	Partial evidence “SoEnergy is a global provider of "energy as a service", ensuring customized solutions for a diverse array of organizations and industries worldwide, such as mining, oil & gas…” Source: RevenueBase Database · checked Sep 28, 2026
19	Arb, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	528 contacts →
	Indirect evidence “ARB Inc.” Source: RevenueBase Database · checked Sep 28, 2026
20	Roeslein & Associates	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 28, 2026	1,001-5,000	522 contacts →
	Indirect evidence “Founded in 1990 and employee-owned since 2014, Roeslein & Associates is a global team of EPC solution providers with modular fabrication capabilities who never stop asking “what…” Source: RevenueBase Database · checked Sep 28, 2026
21	Kimray, INC	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 28, 2026	501-1,000	514 contacts →
	Partial evidence “Kimray is a global solutions partner in the energy industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	Noresco	Partial evidence	Westborough, MA, United StatesHQ checked Sep 28, 2026	201-500	481 contacts →
	Partial evidence “NORESCO, a part of Carrier Global Corporation, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Source: RevenueBase Database · checked Sep 28, 2026
23	ACES	Strong evidence	Carmel, IN, United StatesHQ checked Sep 28, 2026	201-500	478 contacts →
	Strong evidence “ACES is a nationwide energy management company that helps its clients buy, sell, and manage the complexity of the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
24	Babcock Power	Indirect evidence	Danvers, MA, United StatesHQ checked Sep 28, 2026	501-1,000	476 contacts →
	Indirect evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 28, 2026
25	Calpine Energy Solutions, LLC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	201-500	467 contacts →
	Strong evidence “Calpine Solutions is a retail energy provider with a robust suite of customized products, analytics, and data management solutions to turn a corporate electricity expense into a…” Source: RevenueBase Database · checked Sep 28, 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: enterprise energy management consultants. 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 enterprise energy management consultants.
Partial evidence: Its own public description names part of enterprise energy management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise energy management consultants. 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 4,264 enterprise energy management consultants based in the United States

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Enterprise energy management consultants based in the United States at a glance

As of Sep 28, 2026

42.8%Verified-email coverage

21.9Average contacts per company

1-10Median size (employees)

5.6%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,222

11-50

1,396

51-200

445

201-500

109

501-1,000

1,001-5,000

5,001-10,000

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 4,264 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 enterprise energy management consultants, 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 “enterprise energy management consultants”. 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 enterprise energy management consultants), 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 enterprise energy management consultants, 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, 39,949 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 28, 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.

Enterprise energy management consultants 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 enterprise energy management consultants, 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 enterprise energy management consultants are there based in the United States?

RevenueBase identified 4,264 enterprise energy management consultants 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?

Sargent & Lundy, headquartered in Casper, tops this list with the largest team on record.

Which city has the most enterprise energy management consultants?

Houston leads with 239 headquartered companies, followed by New York (150) and Dallas (72).

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 39,949 verified decision-maker contacts tracked across these 4,264 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 28, 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.