Company lists · Data refreshed September 2026

Top 25 Power quality engineering companies worldwide

Name: Power quality engineering companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 8,516 companies tracked

RevenueBase identified 8,516 power quality engineering companies worldwide as of September 2026 and tracks 187,455 professional contacts across them, including 52,981 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers power quality engineering companies worldwide, 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 17, 2026. Country and city lists for power quality engineering companies follow the table.

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 17, 2026 86% judged on-target in blind review

8,516Companies

187,455Contacts tracked

52,981Verified emails

0Mobile numbers

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The 25 largest power quality engineering companies worldwide

Ranked by team size

Top 25 of 8,516 power quality engineering companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to power quality engineering 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	WOOD	Partial evidence	Aberdeen, United KingdomHQ checked Sep 17, 2026	10001+	26,949 contacts →
	Partial evidence “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Source: RevenueBase Database · checked Sep 17, 2026
2	Sargent & Lundy	Partial evidence	Chicago, WY, United StatesHQ checked Sep 17, 2026	1,001-5,000	4,156 contacts →
	Partial evidence “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Source: RevenueBase Database · checked Sep 17, 2026
3	Entrust Solutions Group	Partial evidence	Lisle, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,966 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 17, 2026
4	NAES	Partial evidence	Issaquah, WA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,956 contacts →
	Partial evidence “NAES is the power generation industry’s largest independent services provider, with more than 40 years of experience managing risk and turning it into profits.” Source: RevenueBase Database · checked Sep 17, 2026
5	Enercon Services, INC	Strong evidence	Kennesaw, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,865 contacts →
	Strong 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 17, 2026
6	Shaker Consultancy Group	Partial evidence	Cairo, EgyptHQ checked Sep 17, 2026	1,001-5,000	1,833 contacts →
	Partial evidence “Since its founding in 1982, Shaker has established itself as one of the leading engineering and design firms across the MENA region, with offices in 8 countries and projects…” Source: RevenueBase Database · checked Sep 17, 2026
7	Engelmig Energia	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 17, 2026	5,001-10,000	1,818 contacts →
	Indirect evidence “A Engelmig foi fundada em 1985 com o objetivo de prestar serviços de engenharia em redes de distribuição de energia elétrica.” Source: RevenueBase Database · checked Sep 17, 2026
8	Westwood Professional Services	Indirect evidence	Plano, TX, United StatesHQ checked Sep 17, 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 17, 2026
9	BHI Energy	Indirect evidence	Weymouth, MA, United StatesHQ checked Sep 17, 2026	5,001-10,000	1,427 contacts →
	Indirect evidence “BHI Energy is an industry-leading provider of specialty services and staffing solutions in support of the daily operations, routine maintenance and capital investment requirements…” Source: RevenueBase Database · checked Sep 17, 2026
10	Atwell, LLC	Partial evidence	Southfield, MI, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,290 contacts →
	Partial evidence “Atwell is a full-service consulting, engineering and construction services firm that delivers a broad range of creative solutions to clients in the real estate and land…” Source: RevenueBase Database · checked Sep 17, 2026
11	Shermco Industries	Indirect evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,221 contacts →
	Indirect evidence “Shermco Industries is a provider of safe, reliable testing, repair, professional training, electrical outage planning, maintenance and analysis of rotating apparatus and…” Source: RevenueBase Database · checked Sep 17, 2026
12	Industrial Electric Mfg. IEM	Partial evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	969 contacts →
	Partial evidence “Industrial Electric Mfg.(IEM) is the largest independent full-line manufacturer of electrical distribution equipment and integrated power systems in the U.S.” Source: RevenueBase Database · checked Sep 17, 2026
13	GAI Consultants, INC	Partial evidence	Homestead, PA, United StatesHQ checked Sep 17, 2026	501-1,000	964 contacts →
	Partial evidence “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” Source: RevenueBase Database · checked Sep 17, 2026
14	Dashiell Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	940 contacts →
	Partial evidence “Dashiell is a leading national provider of technical services to the electric utility, power generation, industrial, renewable and energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
15	Mesa Associates, INC	Partial evidence	Madison, AL, United StatesHQ checked Sep 17, 2026	1,001-5,000	897 contacts →
	Partial evidence “Mesa is a full service engineering, procurement, and construction management firm specializing in providing engineering services to electric utility, heavy industrial, and…” Source: RevenueBase Database · checked Sep 17, 2026
16	Willdan	Indirect evidence	Anaheim, CA, United StatesHQ checked Sep 17, 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 17, 2026
17	Anord Mardix	Partial evidence	Dundalk, United StatesHQ checked Sep 17, 2026	1,001-5,000	836 contacts →
	Partial evidence “Anord Mardix, a Flex company, is the global leader in critical power distribution and protection.” Source: RevenueBase Database · checked Sep 17, 2026
18	Flanders	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 17, 2026	501-1,000	789 contacts →
	Indirect evidence “FLANDERS, Leverage our legacy.” Source: RevenueBase Database · checked Sep 17, 2026
19	Sigma S.A. Chile	Indirect evidence	Santiago, ChileHQ checked Sep 17, 2026	201-500	757 contacts →
	Indirect evidence “Somos una empresa de excelencia que desarrolla servicios integrales de Estudios Eléctricos, ingeniería, montaje industrial, geomensura, apoyo profesional, inspección técnica y…” Source: RevenueBase Database · checked Sep 17, 2026
20	PAE	Partial evidence	Portland, OR, United StatesHQ checked Sep 17, 2026	201-500	744 contacts →
	Partial evidence “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Source: RevenueBase Database · checked Sep 17, 2026
21	Sigma Industry	Indirect evidence	Stockholm, SwedenHQ checked Sep 17, 2026	1,001-5,000	688 contacts →
	Indirect evidence “Sigma Industry har tagit ett långsiktigt åtagande för att förnya konsultbranschen inom ingenjörstjänster.” Source: RevenueBase Database · checked Sep 17, 2026
22	Electric Power Engineers	Strong evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	501-1,000	630 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 17, 2026
23	Kontrolmatik Technologies	Indirect evidence	Sariyer, TürkiyeHQ checked Sep 17, 2026	1,001-5,000	602 contacts →
	Indirect evidence “Kontrolmatik provides a broad spectrum of services to industries including- LV/MV/HV Solutions- SCADA and Automation- Communication- Balance of Plant- Consulting- ICS…” Source: RevenueBase Database · checked Sep 17, 2026
24	Vanderweil Engineers	Strong evidence	Boston, MA, United StatesHQ checked Sep 17, 2026	201-500	545 contacts →
	Strong 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 17, 2026
25	Arb, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	528 contacts →
	Indirect evidence “ARB Inc.” Source: RevenueBase Database · checked Sep 17, 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 quality engineering 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 quality engineering companies.
Partial evidence: Its own public description names part of power quality engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power quality engineering 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 8,516 power quality engineering companies worldwide

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Power quality engineering companies worldwide at a glance

As of Sep 17, 2026

28.3%Verified-email coverage

22.0Average contacts per company

11-50Median size (employees)

1.4%Largest-city concentration · Sao Paulo

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

4,198

11-50

2,909

51-200

997

201-500

221

501-1,000

1,001-5,000

5,001-10,000

10001+

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 quality engineering 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.
Coverage: 41 countries, largest first: the United States, Brazil, India, Türkiye, Germany, the United Kingdom, Canada, Australia, Italy, France and 31 more. Country and city lists for power quality engineering companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “power quality engineering 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 quality engineering 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 quality engineering companies, and records with no verified work email.
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, 52,981 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 17, 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 quality engineering companies by location

45 lists · largest first

Every Power quality engineering companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 quality engineering 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 quality engineering companies are there worldwide?

RevenueBase identified 8,516 power quality engineering companies worldwide 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?

WOOD, headquartered in Aberdeen, tops this list with the largest team on record.

Which country has the most power quality engineering companies?

The United States leads with 1,585 companies, followed by Brazil (1,247) and India (634). Every power quality engineering companies list by country and city is linked on this page.

Which city has the most power quality engineering companies?

Sao Paulo leads with 122 headquartered companies, followed by Istanbul (75) and Lima (62).

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 52,981 verified decision-maker contacts tracked across these 8,516 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 17, 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.