Company lists · Data refreshed September 2026

Top 25 Grid reliability consulting firms based in the United States

Name: Grid reliability 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 3, 2026 880 companies tracked

RevenueBase identified 880 grid reliability consulting firms headquartered in the United States as of September 2026 and tracks 27,940 professional contacts across them, including 12,293 with verified work emails and 10,953 with mobile numbers. Houston is the largest hub.

This list covers grid reliability 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 3, 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 3, 2026 86% judged on-target in blind review

880Companies

27,940Contacts tracked

12,293Verified emails

10,953Mobile numbers

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The 25 largest grid reliability consulting firms based in the United States

Ranked by team size

Top 25 of 880 grid reliability consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to grid reliability 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	Entrust Solutions Group	Partial evidence	Lisle, DE, United StatesHQ checked Sep 3, 2026	1,001-5,000	2,987 contacts →
	Partial evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 3, 2026
2	Enercon Services, INC	Indirect evidence	Kennesaw, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,840 contacts →
	Indirect 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 3, 2026
3	Westwood Professional Services	Indirect evidence	Plano, LA, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,631 contacts →
	Indirect evidence “At Westwood, our purpose is to create a better world for people through our work.” Source: RevenueBase Database · checked Sep 3, 2026
4	Willdan	Partial evidence	Anaheim, CA, United StatesHQ checked Sep 3, 2026	1,001-5,000	838 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 3, 2026
5	Electric Power Engineers	Strong evidence	Austin, IL, United StatesHQ checked Sep 3, 2026	501-1,000	619 contacts →
	Strong evidence “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Source: RevenueBase Database · checked Sep 3, 2026
6	Delta Star, INC	Partial evidence	Lynchburg, VA, United StatesHQ checked Sep 3, 2026	1,001-5,000	544 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 3, 2026
7	Resa Power	Indirect evidence	Houston, NY, United StatesHQ checked Sep 3, 2026	1,001-5,000	524 contacts →
	Indirect evidence “RESA Power is your ONE-STOP for all of your power needs.” Source: RevenueBase Database · checked Sep 3, 2026
8	Qualitrol	Partial evidence	Fairport, NY, United StatesHQ checked Sep 3, 2026	501-1,000	499 contacts →
	Partial evidence “Qualitrol is a global leader in electrical grid monitoring solutions for businesses that manage, operate, or support the power grid.” Source: RevenueBase Database · checked Sep 3, 2026
9	Techserv Engineering	Partial evidence	Tyler, TX, United StatesHQ checked Sep 3, 2026	501-1,000	445 contacts →
	Partial evidence “TechServ Consulting and Training, Ltd was established in November 1992.” Source: RevenueBase Database · checked Sep 3, 2026
10	Open Systems International	Indirect evidence	Bedford, MA, United StatesHQ checked Sep 3, 2026	1,001-5,000	444 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 3, 2026
11	E Source	Indirect evidence	Houston, NY, United StatesHQ checked Sep 3, 2026	201-500	372 contacts →
	Indirect evidence “For decades, E Source has been a trusted partner to utilities navigating an evolving energy landscape.” Source: RevenueBase Database · checked Sep 3, 2026
12	Commonwealth Associates, INC	Partial evidence	Jackson, GA, United StatesHQ checked Sep 3, 2026	201-500	301 contacts →
	Partial evidence “We provide expert engineering and consulting services that enable a more reliable and resilient power system.” Source: RevenueBase Database · checked Sep 3, 2026
13	Quanta Technology, LLC	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 3, 2026	201-500	281 contacts →
	Indirect evidence “Quanta Technology is an expertise-based, independent advisory company providing business and technical expertise to the energy and utility industries.” Source: RevenueBase Database · checked Sep 3, 2026
14	Asplundh Engineering Services	Indirect evidence	Willow Grove, DE, United StatesHQ checked Sep 3, 2026	1,001-5,000	277 contacts →
	Indirect evidence “Asplundh Engineering Services leverages more than 100 years of experience to provide a superior, single-point solution for engineering, design and testing services to…” Source: RevenueBase Database · checked Sep 3, 2026
15	Mosaic	Strong evidence	Renton, WA, United StatesHQ checked Sep 3, 2026	201-500	250 contacts →
	Strong evidence “Mosaic is a consulting firm that delivers custom solutions across the energy, utility, grid operations, and grid modernization space.” Source: RevenueBase Database · checked Sep 3, 2026
16	QUES	Indirect evidence	Kansas City, FL, United StatesHQ checked Sep 3, 2026	501-1,000	220 contacts →
	Indirect evidence “QUES provides electric distribution, transmission and substation engineering, utility asset management, electric power project management and other ancillary utility…” Source: RevenueBase Database · checked Sep 3, 2026
17	Newkirk Electric Associates, INC	Indirect evidence	Muskegon, MI, United StatesHQ checked Sep 3, 2026	501-1,000	192 contacts →
	Indirect evidence “Newkirk Electric is a family-owned and operated, Michigan-based company headquartered on the shorelines of West Michigan.” Source: RevenueBase Database · checked Sep 3, 2026
18	United Engineers & Constructors An Aecon Company	Partial evidence	Mount Laurel, NJ, United StatesHQ checked Sep 3, 2026	201-500	188 contacts →
	Partial evidence “United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…” Source: RevenueBase Database · checked Sep 3, 2026
19	Expanse Electrical CO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 3, 2026	501-1,000	185 contacts →
	Indirect evidence “Expanse Electrical Company is a premier provider of integrated electrical infrastructure, instrumentation and automation system solutions.” Source: RevenueBase Database · checked Sep 3, 2026
20	Utilicast	Partial evidence	Seattle, WA, United StatesHQ checked Sep 3, 2026	201-500	179 contacts →
	Partial evidence “Utilicast is more than just a consulting company.” Source: RevenueBase Database · checked Sep 3, 2026
21	Power Grid Engineering, LLC	Partial evidence	Lake Mary, FL, United StatesHQ checked Sep 3, 2026	1,001-5,000	160 contacts →
	Partial evidence “Qualus is a leading pure-play power services firm and innovator at the forefront of the energy transition and transformation, with differentiated capabilities across grid…” Source: RevenueBase Database · checked Sep 3, 2026
22	Voltyx	Indirect evidence	Maryland Heights, MO, United StatesHQ checked Sep 3, 2026	201-500	133 contacts →
	Indirect evidence “Voltyx is an integrated solutions provider focused on guiding our partners through the complex modernization of the electrical infrastructure through vision, strategy, service…” Source: RevenueBase Database · checked Sep 3, 2026
23	Mastec Power Delivery	Indirect evidence	Coral Gables, FL, United StatesHQ checked Sep 3, 2026	201-500	110 contacts →
	Indirect evidence “As one of the nation's leading electric transmission line construction companies, MasTec Power Delivery companies engineer and construct efficient and reliable electrical…” Source: RevenueBase Database · checked Sep 3, 2026
24	Lindsey Systems	Indirect evidence	Azusa, CA, United StatesHQ checked Sep 3, 2026	201-500	60 contacts →
	Indirect evidence “Lindsey Systems is recognized globally as an innovator in the electric power industry.” Source: RevenueBase Database · checked Sep 3, 2026
25	Tier 1 Utility Design, INC	Indirect evidence	Reading, PA, United StatesHQ checked Sep 3, 2026	201-500	58 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 3, 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: grid reliability 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 grid reliability consulting firms.
Partial evidence: Its own public description names part of grid reliability consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid reliability 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 880 grid reliability consulting firms based in the United States

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Grid reliability consulting firms based in the United States at a glance

As of Sep 3, 2026

44.0%Verified-email coverage

39.2%Mobile-number coverage

31.8Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · Houston

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

437

11-50

281

51-200

105

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

1,11231–60

6,98861–90

4,11890–180

75180+

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 grid reliability 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 “grid reliability 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 grid reliability 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 grid reliability 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, 12,293 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 3, 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.

Grid reliability consulting firms by metro

Grid reliability consulting firms in Houston29

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 grid reliability 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 grid reliability consulting firms are there based in the United States?

RevenueBase identified 880 grid reliability 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?

Entrust Solutions Group, headquartered in Wilmington, tops this list with the largest team on record.

Which city has the most grid reliability consulting firms?

Houston leads with 29 headquartered companies, followed by Atlanta (16) and Austin (15).

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 12,293 verified decision-maker contacts tracked across these 880 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 3, 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.