Company lists · Data refreshed September 2026

Top 25 Power management consulting firms based in the United States

Name: Power management consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,424 companies tracked

RevenueBase identified 3,424 power management consulting firms headquartered in the United States as of September 2026 and tracks 72,918 professional contacts across them, including 31,135 with verified work emails. Houston is the largest hub.

This list covers power management consulting firms 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 21, 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 21, 2026 86% judged on-target in blind review

3,424Companies

72,918Contacts tracked

31,135Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest power management consulting firms based in the United States

Ranked by team size

Top 25 of 3,424 power management consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to power management consulting firms: 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 21, 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 21, 2026
2	Generac	Indirect evidence	Waukesha, WI, United StatesHQ checked Sep 21, 2026	5,001-10,000	3,797 contacts →
	Indirect evidence “Generac is the total energy solutions company powering a smarter world.” Source: RevenueBase Database · checked Sep 21, 2026
3	FTI	Indirect evidence	Menasha, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,741 contacts →
	Indirect evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 21, 2026
4	Clearesult	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,121 contacts →
	Indirect evidence “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Source: RevenueBase Database · checked Sep 21, 2026
5	Enercon Services, INC	Partial evidence	Kennesaw, GA, United StatesHQ checked Sep 21, 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 21, 2026
6	Westwood Professional Services	Indirect evidence	Plano, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,661 contacts →
	Indirect evidence “At Westwood, our purpose is to create a better world for people through our work.” Source: RevenueBase Database · checked Sep 21, 2026
7	Ameresco	Indirect evidence	Framingham, MA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,383 contacts →
	Indirect 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 21, 2026
8	Willdan	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	851 contacts →
	Partial 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 21, 2026
9	Energy Solutions	Partial evidence	Oakland, CA, United StatesHQ checked Sep 21, 2026	201-500	772 contacts →
	Partial 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 21, 2026
10	PAE	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	201-500	744 contacts →
	Indirect evidence “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Source: RevenueBase Database · checked Sep 21, 2026
11	Resource Innovations	Indirect evidence	Half Moon Bay, CA, United StatesHQ checked Sep 21, 2026	501-1,000	733 contacts →
	Indirect evidence “Resource Innovations (RI) is an energy transformation firm.” Source: RevenueBase Database · checked Sep 21, 2026
12	Capco Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 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 21, 2026
13	Electric Power Engineers	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	501-1,000	630 contacts →
	Partial evidence “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Source: RevenueBase Database · checked Sep 21, 2026
14	Applied Consultants	Indirect evidence	Longview, TX, United StatesHQ checked Sep 21, 2026	501-1,000	578 contacts →
	Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 21, 2026
15	Delta Star, INC	Partial evidence	Lynchburg, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	548 contacts →
	Partial evidence “Delta Star is recognized as an industry leader in pursuit of continuously improving the performance, delivery and reliability of power to meet the energy needs of the future._…” Source: RevenueBase Database · checked Sep 21, 2026
16	Vanderweil Engineers	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	201-500	545 contacts →
	Partial evidence “Vanderweil is a mechanical, electrical, plumbing, fire protection, technology, sustainability, commissioning, and power engineering firm dedicated to providing customized and…” Source: RevenueBase Database · checked Sep 21, 2026
17	RRC Companies	Indirect evidence	Round Rock, TX, United StatesHQ checked Sep 21, 2026	201-500	494 contacts →
	Indirect evidence “RRC is a top-tier designer of utility-scale wind, solar, energy storage, data center, and oil & gas projects in the US and select international markets.” Source: RevenueBase Database · checked Sep 21, 2026
18	Noresco	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 21, 2026	201-500	481 contacts →
	Indirect 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 21, 2026
19	Babcock Power	Partial evidence	Danvers, MA, United StatesHQ checked Sep 21, 2026	501-1,000	476 contacts →
	Partial evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 21, 2026
20	Concentric Power Services	Partial evidence	Carrollton, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	426 contacts →
	Partial evidence “Concentric is the first national industrial power services organization delivering forklift and critical power as well as maintenance solutions that ensure uninterrupted…” Source: RevenueBase Database · checked Sep 21, 2026
21	TRIO	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	201-500	383 contacts →
	Indirect evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 21, 2026
22	E Source	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	377 contacts →
	Indirect evidence “For decades, E Source has been a trusted partner to utilities navigating an evolving energy landscape.” Source: RevenueBase Database · checked Sep 21, 2026
23	P2s	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 21, 2026	201-500	375 contacts →
	Indirect evidence “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Source: RevenueBase Database · checked Sep 21, 2026
24	Takkion	Indirect evidence	Evansville, WY, United StatesHQ checked Sep 21, 2026	1,001-5,000	358 contacts →
	Indirect evidence “TAKKION is Moving Energy Forward.” Source: RevenueBase Database · checked Sep 21, 2026
25	Wendel Companies	Partial evidence	Williamsville, NY, United StatesHQ checked Sep 21, 2026	201-500	355 contacts →
	Partial evidence “Wendel is an Architecture, Engineering, Energy Efficiency, and Construction Management Firm that delivers customized solutions and turnkey projects in innovative ways.” Source: RevenueBase Database · checked Sep 21, 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 management consulting firms. 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 management consulting firms.
Partial evidence: Its own public description names part of power management consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power management consulting firms. 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 3,424 power management consulting firms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 31,135 reachable decision-makers.

Free signup · no credit card

View the full list →

Power management consulting firms based in the United States at a glance

As of Sep 21, 2026

42.7%Verified-email coverage

21.3Average contacts per company

1-10Median size (employees)

5.3%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,888

11-50

1,052

51-200

332

201-500

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 3,424 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 management consulting firms, 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 management consulting firms”. 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 management consulting firms), 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 management consulting firms, 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, 31,135 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 21, 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 management consulting firms 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 power management consulting firms, 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 management consulting firms are there based in the United States?

RevenueBase identified 3,424 power management consulting firms 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 power management consulting firms?

Houston leads with 182 headquartered companies, followed by New York (114) and Chicago (54).

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 31,135 verified decision-maker contacts tracked across these 3,424 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 21, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,424 power management consulting firms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Power management consulting firms by geography

Browse the directory

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.