Company lists · Data refreshed September 2026

Top 25 Transformer manufacturers worldwide

Name: Transformer manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 6,336 companies tracked

RevenueBase identified 6,336 transformer manufacturers worldwide as of September 2026 and tracks 158,888 professional contacts across them, including 39,973 with verified work emails and 0 with mobile numbers. India is the largest market and Bangalore the largest hub.

This list covers transformer manufacturers 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 19, 2026. Country and city lists for transformer manufacturers 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 19, 2026 86% judged on-target in blind review

6,336Companies

158,888Contacts tracked

39,973Verified emails

0Mobile numbers

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The 25 largest transformer manufacturers worldwide

Ranked by team size

Top 25 of 6,336 transformer manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to transformer manufacturers: 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	WEG	Indirect evidence	Jaraguá Do Sul, BrazilHQ checked Sep 19, 2026	10001+	18,327 contacts →
	Indirect evidence “Founded in 1961, WEG is a global electro-electronic equipment company, operating in the capital goods sector a with focus on electric motors, gearboxes and drives and controls…” Source: RevenueBase Database · checked Sep 19, 2026
2	CG Power And Industrial Solutions Limited	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	4,609 contacts →
	Indirect evidence “CG Power and Industrial Solutions Limited is an engineering conglomerate headquartered in Mumbai, India.” Source: RevenueBase Database · checked Sep 19, 2026
3	Littelfuse	Indirect evidence	Rosemont, IL, United StatesHQ checked Sep 19, 2026	10001+	4,259 contacts →
	Indirect evidence “Littelfuse, Inc.(NASDAQ: LFUS) is a diversified, industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy.” Source: RevenueBase Database · checked Sep 19, 2026
4	Hubbell Incorporated	Partial evidence	Shelton, CT, United StatesHQ checked Sep 19, 2026	10001+	4,053 contacts →
	Partial evidence “Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
5	C&s Electric LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 19, 2026	5,001-10,000	2,773 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
6	Powell	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,561 contacts →
	Indirect evidence “Powell is hiring- Powell is dedicated to improving people’s lives by providing reliable power distribution systems in every market we serve.” Source: RevenueBase Database · checked Sep 19, 2026
7	Prolec Energy	Indirect evidence	Apodaca, MexicoHQ checked Sep 19, 2026	5,001-10,000	2,322 contacts →
	Indirect evidence “Prolec has more than fifty years of experience in the creation of comprehensive solutions to meet the needs of power generation, transmission, and distribution.” Source: RevenueBase Database · checked Sep 19, 2026
8	Electrical Components International	Indirect evidence	Southfield, MI, United StatesHQ checked Sep 19, 2026	10001+	2,200 contacts →
	Indirect evidence “Founded in 1953, Electrical Components International (ECI) is one of the world’s leading suppliers of electrical distribution systems, control box assemblies, and other critical…” Source: RevenueBase Database · checked Sep 19, 2026
9	Lucy Electric	Indirect evidence	Thame, United KingdomHQ checked Sep 19, 2026	1,001-5,000	1,238 contacts →
	Indirect evidence “Lucy Electric is a leader in secondary power distribution solutions with over 100 years’ industry experience.” Source: RevenueBase Database · checked Sep 19, 2026
10	Bharat Bijlee LTD	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,144 contacts →
	Indirect evidence “Bharat Bijlee is a public-listed electrical engineering company headquartered in Mumbai, India.” Source: RevenueBase Database · checked Sep 19, 2026
11	Hubbell Power Systems	Partial evidence	Columbia, SC, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,079 contacts →
	Partial evidence “Hubbell Power Systems (HPS) designs and manufactures a wide variety of electric power transmission, distribution, substation, underground, OEM, and communications products used by…” Source: RevenueBase Database · checked Sep 19, 2026
12	Maschinenfabrik Reinhausen	Indirect evidence	Regensburg, GermanyHQ checked Sep 19, 2026	1,001-5,000	1,052 contacts →
	Indirect evidence “MR: THE POWER BEHIND POWER We at MR have been writing our success story in the world of energy technology for more than 150 years.” Source: RevenueBase Database · checked Sep 19, 2026
13	Sudhir Power LTD	Partial evidence	Gurugram, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,036 contacts →
	Partial evidence “Sudhir Power Limited, established in 1973, is a leader in Diesel Gensets, Transformers, PSS, HT & LT panels, and Equipment rental services.” Source: RevenueBase Database · checked Sep 19, 2026
14	Arteche	Partial evidence	Mungia, SpainHQ checked Sep 19, 2026	1,001-5,000	993 contacts →
	Partial evidence “The Arteche Group, with 75 years of experience in the electric power industry, offers high-tech solutions and equipment, with a complete range of instrument transformers…” Source: RevenueBase Database · checked Sep 19, 2026
15	Industrial Electric Mfg. IEM	Partial evidence	Fremont, CA, United StatesHQ checked Sep 19, 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 19, 2026
16	Mitsubishi Electric Power Products, INC	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 19, 2026	1,001-5,000	967 contacts →
	Indirect evidence “Mitsubishi Electric Power Products, Inc.(MEPPI) is a leading U.S.” Source: RevenueBase Database · checked Sep 19, 2026
17	Howard Industries	Strong evidence	Ellisville, MS, United StatesHQ checked Sep 19, 2026	1,001-5,000	941 contacts →
	Strong evidence “Howard Industries is the leading manufacturer of liquid-filled distribution transformers for the utility and commercial/industrial markets.” Source: RevenueBase Database · checked Sep 19, 2026
18	SAE Towers	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	928 contacts →
	Indirect evidence “SAE Towers is one of the world’s largest producers of steel lattice towers for high-voltage power transmission.” Source: RevenueBase Database · checked Sep 19, 2026
19	Vijai Electricals Limited, Hyderabad	Indirect evidence	Hyderabad, IndiaHQ checked Sep 19, 2026	5,001-10,000	920 contacts →
	Indirect evidence “Vijai Electricals Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
20	Electrical Consultants, INC	Indirect evidence	Billings, MT, United StatesHQ checked Sep 19, 2026	1,001-5,000	890 contacts →
	Indirect evidence “Electrical Consultants, Inc.(ECI) is an employee-owned, national provider of high voltage transmission, substation, and distribution solutions.” Source: RevenueBase Database · checked Sep 19, 2026
21	Astor A.Ş	Partial evidence	Ankara, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	839 contacts →
	Partial evidence “Astor Enerji is an innovative company leading the electromechanical manufacturing industry sector by manufacturing and selling transformers with its knowledge of nearly 40 years…” Source: RevenueBase Database · checked Sep 19, 2026
22	Virginia Transformer Corp	Strong evidence	Roanoke, VA, United StatesHQ checked Sep 19, 2026	5,001-10,000	792 contacts →
	Strong evidence “Virginia Transformer is an engineering company that manufactures transformers.” Source: RevenueBase Database · checked Sep 19, 2026
23	Best Transformer	Partial evidence	Balıkesir, TürkiyeHQ checked Sep 19, 2026	1,001-5,000	696 contacts →
	Partial evidence “BEST Transformer, founded in 1966 in Balıkesir, produces oil-immersed distribution transformers, power transformers, cast resin dry-type transformers, reactors, and mechanical…” Source: RevenueBase Database · checked Sep 19, 2026
24	ALFEN	Partial evidence	Almere, NetherlandsHQ checked Sep 19, 2026	501-1,000	678 contacts →
	Partial evidence “With transformer substations, energy storage systems, charging stations for electric vehicles and a diverse portfolio of other products and services, Alfen has a central and…” Source: RevenueBase Database · checked Sep 19, 2026
25	Trench Group	Partial evidence	Berlin, GermanyHQ checked Sep 19, 2026	1,001-5,000	664 contacts →
	Partial evidence “As Trench Group, we are sage and VISIONARY INNOMAKERS leading the sustainable transformation of the electric power industry.” Source: RevenueBase Database · checked Sep 19, 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: transformer manufacturers. 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 transformer manufacturers.
Partial evidence: Its own public description names part of transformer manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name transformer manufacturers. 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 6,336 transformer manufacturers worldwide

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Transformer manufacturers worldwide at a glance

As of Sep 19, 2026

25.2%Verified-email coverage

25.1Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Bangalore

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,475

11-50

2,100

51-200

1,740

201-500

534

501-1,000

215

1,001-5,000

186

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 transformer manufacturers, 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: 24 countries, largest first: India, China, the United States, Brazil, Italy, Türkiye, Germany, the United Kingdom, Canada, France and 14 more. Country and city lists for transformer manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “transformer manufacturers”. 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 transformer manufacturers), 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 transformer manufacturers, 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, 39,973 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 19, 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.

Transformer manufacturers by location

34 lists · largest first

Every Transformer manufacturers 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 transformer manufacturers, 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 transformer manufacturers are there worldwide?

RevenueBase identified 6,336 transformer manufacturers 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?

WEG, headquartered in Jaragua Do Sul, tops this list with the largest team on record.

Which country has the most transformer manufacturers?

India leads with 2,112 companies, followed by China (831) and the United States (767). Every transformer manufacturers list by country and city is linked on this page.

Which city has the most transformer manufacturers?

Bangalore leads with 123 headquartered companies, followed by Delhi (120) and Pune (101).

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 39,973 verified decision-maker contacts tracked across these 6,336 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 19, 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.