Company lists · Data refreshed September 2026

Top 25 Electrical transformer companies based in France

Name: Electrical transformer companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 94 companies tracked

RevenueBase identified 94 electrical transformer companies headquartered in France as of September 2026 and tracks 8,844 professional contacts across them, including 2,772 with verified work emails. Lyon is the largest hub.

This list covers electrical transformer companies headquartered in France, 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.

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

94Companies

8,844Contacts tracked

2,772Verified emails

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The 25 largest electrical transformer companies based in France

Ranked by team size

Top 25 of 94 electrical transformer companies based in France, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to electrical transformer 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	Nexans	Indirect evidence	Courbevoie, FranceHQ checked Sep 19, 2026	10001+	6,409 contacts →
	Indirect evidence “For over a century, Nexans has played a crucial role in the electrification of the planet and is committed to electrifying the future.” Source: RevenueBase Database · checked Sep 19, 2026
2	Sicame Group	Partial evidence	Lyon, FranceHQ checked Sep 19, 2026	1,001-5,000	435 contacts →
	Partial evidence “Sicame Group is recognized as one of the world leaders specializing in the production and sale of accessories and services for the transmission and distribution of electrical…” Source: RevenueBase Database · checked Sep 19, 2026
3	Aventech	Indirect evidence	Valence, FranceHQ checked Sep 19, 2026	201-500	204 contacts →
	Indirect evidence “Expert en conception, industrialisation, production d'équipements électriques critiques HT/BT en environnements sévères : ↳ Oïl & Gaz, Centrale nucléaire & process, Centrale…” Source: RevenueBase Database · checked Sep 19, 2026
4	Green Transfo SAS	Indirect evidence	Cahors, FranceHQ checked Sep 19, 2026	1,001-5,000	164 contacts →
	Indirect evidence “At Green Transfo SAS, we are dedicated to providing our customers with the highest level of satisfaction through our commitment to quality products and exceptional service.” Source: RevenueBase Database · checked Sep 19, 2026
5	Spie Thépault	Indirect evidence	Cergy, FranceHQ checked Sep 19, 2026	201-500	98 contacts →
	Indirect evidence “SPIE Thépault est le spécialiste historique des réseaux électriques haute tension.” Source: RevenueBase Database · checked Sep 19, 2026
6	Dbt-Cev	Indirect evidence	Brebières, FranceHQ checked Sep 19, 2026	51-200	88 contacts →
	Indirect evidence “DBT est un groupe industriel spécialisé dans la distribution de l’énergie.” Source: RevenueBase Database · checked Sep 19, 2026
7	Sicame France	Indirect evidence	Arnac-pompadour, FranceHQ checked Sep 19, 2026	1,001-5,000	80 contacts →
	Indirect evidence “Votre spécialiste de l’équipement électrique réseaux depuis plus de 65ans.” Source: RevenueBase Database · checked Sep 19, 2026
8	Transformateurs Solutions Vénissieux	Strong evidence	Vénissieux, FranceHQ checked Sep 19, 2026	51-200	74 contacts →
	Strong evidence “Transformateurs Solutions Vénissieux is the French specialised company of electric power transformers reparation.” Source: RevenueBase Database · checked Sep 19, 2026
9	Penta Electrical Safety Products	Partial evidence	Malataverne, FranceHQ checked Sep 19, 2026	501-1,000	69 contacts →
	Partial evidence “We are PENTA Electrical Safety Products Multinational industrial leader, pioneer and expert manufacturer of electrical safety solutions, committed to ensuring your safety at every…” Source: RevenueBase Database · checked Sep 19, 2026
10	SDCEM	Indirect evidence	Champagnier, FranceHQ checked Sep 19, 2026	51-200	66 contacts →
	Indirect evidence “Since 1947, SDCEM has developed a renowned know-how in designing and manufacturing of switching solutions, offering the widest range of Medium Voltage (MV), High Voltage (HV) &…” Source: RevenueBase Database · checked Sep 19, 2026
11	Lautech	Partial evidence	Lanester, FranceHQ checked Sep 19, 2026	51-200	60 contacts →
	Partial evidence “LAUTECH est une société du groupe ALLEZ, spécialisée dans la conception, la fabrication et la réalisation des - Postes de livraison au poste de transformation HTA/BT-…” Source: RevenueBase Database · checked Sep 19, 2026
12	Epsys Devient Cahors Solutions Intégrées	Indirect evidence	Saint Alban Leysse, FranceHQ checked Sep 19, 2026	201-500	57 contacts →
	Indirect evidence “EPSYS, depuis 90 ans et plus de postes livrés est le leader sur le marché français de la production de solutions préfabriquées.” Source: RevenueBase Database · checked Sep 19, 2026
13	Augier Energy	Indirect evidence	Carros, FranceHQ checked Sep 19, 2026	11-50	36 contacts →
	Indirect evidence “Founded in 1954, today located in the Eco-Vallée, the economic engine of the Nice Côte d'Azur Metropolis, 10 minutes from Nice International Airport, AUGIER Energy is the…” Source: RevenueBase Database · checked Sep 19, 2026
14	Sadtem	Indirect evidence	Douai, FranceHQ checked Sep 19, 2026	51-200	33 contacts →
	Indirect evidence “SADTEM est un acteur industriel GLOBAL reconnu de l’APPAREILLAGE ELECTRIQUE DE PUISSANCE en Moyenne et Haute Tension dans les domaines de la traction électrique, de la production…” Source: RevenueBase Database · checked Sep 19, 2026
15	Amphenol Auxel FTG	Partial evidence	Gondecourt, FranceHQ checked Sep 19, 2026	201-500	29 contacts →
	Partial evidence “Amphenol AUXEL FTG is a global company that designs, manufactures, sells and provides support for interconnection and power distribution solutions in Electrical, Power Electronics…” Source: RevenueBase Database · checked Sep 19, 2026
16	Amphenol Auxel	Indirect evidence	Gondecourt, FranceHQ checked Sep 19, 2026	201-500	27 contacts →
	Indirect evidence “AUXEL is part of the Amphenol group.” Source: RevenueBase Database · checked Sep 19, 2026
17	Bernard Bonnefond	Partial evidence	St Etienne, FranceHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “VARIVOLT is an on-load stepless variable voltage transformer (0–20 MVA), used in the glass, steel, chemical industries, and test platforms.” Source: RevenueBase Database · checked Sep 19, 2026
18	Cefem Group	Indirect evidence	Saint Michel De Boulogne, FranceHQ checked Sep 19, 2026	51-200	24 contacts →
	Indirect evidence “The Cefem Group has been developing and manufacturing products since 1987 around 3 Business Units: Cefem Power: Power electronics, through the design and manufacture of…” Source: RevenueBase Database · checked Sep 19, 2026
19	Hazemeyer	Indirect evidence	Gauchy, FranceHQ checked Sep 19, 2026	51-200	24 contacts →
	Indirect evidence “Hazemeyer is a manufacturer specialised since 1930 in distribution and energy management solutions.” Source: RevenueBase Database · checked Sep 19, 2026
20	MYRRA	Partial evidence	Bussy-saint-georges, FranceHQ checked Sep 19, 2026	201-500	24 contacts →
	Partial evidence “Myrra design and manufacture high-quality transformers and inductors for industrial use.” Source: RevenueBase Database · checked Sep 19, 2026
21	SNT Duriez	Partial evidence	Le Grand-quevilly, FranceHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “SNT DURIEZ votre constructeur et réparateur de transformateurs électrique” Source: RevenueBase Database · checked Sep 19, 2026
22	BTB Industrie	Partial evidence	Gennevilliers, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Partial evidence “BTB INDUSTRIE est une entreprise générale d’Electricité spécialisée dans la conception et la réalisation d’installations électriques avec une offre sur des chantiers neuf, de…” Source: RevenueBase Database · checked Sep 19, 2026
23	Securelec Socem	Partial evidence	Courrières, FranceHQ checked Sep 19, 2026	11-50	22 contacts →
	Partial evidence “Depuis 1954, Securelec Socem conçoit et fabrique des transformateurs et équipements électriques, du standard au sur-mesure.” Source: RevenueBase Database · checked Sep 19, 2026
24	Kiloamps	Indirect evidence	Le-chambon-feugerolles, FranceHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “KiloAmps is a medium-sized international company founded in KiloAmps specializes in the study, design and supply of high-current, low- and high-voltage power transmission.” Source: RevenueBase Database · checked Sep 19, 2026
25	AEC Energy Services	Partial evidence	Alès, FranceHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Industrial Electrical Solutions HV / LV Expert We provide technical and logistical solutions to meet our customers' strategic challenges and conditions of use, wherever they are…” 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: electrical transformer 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 electrical transformer companies.
Partial evidence: Its own public description names part of electrical transformer companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name electrical transformer 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 94 electrical transformer companies based in France

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Electrical transformer companies based in France at a glance

As of Sep 19, 2026

31.3%Verified-email coverage

94.1Average contacts per company

11-50Median size (employees)

5.3%Largest-city concentration · Lyon

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 94 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 electrical transformer 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.
What qualifies: Companies headquartered in France whose own description of what they do matches “electrical transformer 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 electrical transformer 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 electrical transformer companies, and records with no verified work email. Companies headquartered outside France 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, 2,772 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.

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 electrical transformer 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 electrical transformer companies are there based in France?

RevenueBase identified 94 electrical transformer companies headquartered in France 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?

Nexans, headquartered in Courbevoie, tops this list with the largest team on record.

Which city has the most electrical transformer companies?

Lyon leads with 5 headquartered companies, followed by Paris (5) and Claix (2).

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 2,772 verified decision-maker contacts tracked across these 94 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.