Company lists · Data refreshed September 2026

Top 22 Power conversion companies based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 49 companies tracked

RevenueBase identified 49 power conversion companies headquartered in France as of September 2026 and tracks 1,269 professional contacts across them, including 298 with verified work emails. Gondecourt is the largest hub.

This list covers power conversion 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 20, 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 20, 2026 86% judged on-target in blind review

49Companies

1,269Contacts tracked

298Verified emails

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The 22 largest power conversion companies based in France

Ranked by team size

Top 22 of 49 power conversion companies based in France, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to power conversion 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	Watt & Well	Partial evidence	Pertuis, FranceHQ checked Sep 20, 2026	51-200	101 contacts →
	Partial evidence “Watt & Well is a French power electronics company that designs and manufactures high-performance equipment for demanding sectors.” Source: RevenueBase Database · checked Sep 20, 2026
2	Fronius France	Indirect evidence	Roissy En France, FranceHQ checked Sep 20, 2026	51-200	78 contacts →
	Indirect evidence “Fronius élabore de nouvelles solutions destinées au contrôle et à la gestion de l'énergie, pour les chargeurs de batteries industrielles, les techniques de soudage et les…” Source: RevenueBase Database · checked Sep 20, 2026
3	Brightloop	Partial evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	54 contacts →
	Partial evidence “At BrightLoop, we provide solutions that empower businesses, drive innovation, and shape the future of power electronics.” Source: RevenueBase Database · checked Sep 20, 2026
4	ARCEL	Partial evidence	Champagne, FranceHQ checked Sep 20, 2026	11-50	50 contacts →
	Partial evidence “ARCEL design and manufacture power electronics stacks and sub-assemblies, rectifiers, inverters, choppers, and power electronics components.” Source: RevenueBase Database · checked Sep 20, 2026
5	Gaïa Converter	Partial evidence	Le Haillan Cedex, FranceHQ checked Sep 20, 2026	51-200	33 contacts →
	Partial evidence “Gaïa Converter specializes in compact high efficiency DC power modules.” Source: RevenueBase Database · checked Sep 20, 2026
6	Amphenol Auxel FTG	Partial evidence	Gondecourt, FranceHQ checked Sep 20, 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 20, 2026
7	Amphenol Auxel	Indirect evidence	Gondecourt, FranceHQ checked Sep 20, 2026	201-500	27 contacts →
	Indirect evidence “AUXEL is part of the Amphenol group.” Source: RevenueBase Database · checked Sep 20, 2026
8	SMA Solar France	Indirect evidence	Saint-priest, FranceHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “SMA France est la filiale française de SMA Solar Technology AG, leader mondial sur le marché des onduleurs photovoltaïques.” Source: RevenueBase Database · checked Sep 20, 2026
9	CRE Technology	Indirect evidence	Biot, FranceHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “CRE Technology is a French leading manufacturer of generators and renewable energy controllers.” Source: RevenueBase Database · checked Sep 20, 2026
10	Cefem Group	Partial evidence	Saint Michel De Boulogne, FranceHQ checked Sep 20, 2026	51-200	24 contacts →
	Partial 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 20, 2026
11	Groupe Startec Energy	Indirect evidence	Mérignac, FranceHQ checked Sep 20, 2026	51-200	21 contacts →
	Indirect evidence “With over 25 years' experience at the heart of the energy transition, the Startec Energy group designs and supplies technologies to support manufacturers (OEMs and suppliers) in…” Source: RevenueBase Database · checked Sep 20, 2026
12	Rosaz Energies	Indirect evidence	Saint-pierre-d'albigny, FranceHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “ROSAZ ÉLECTRICITÉ, créée en 1971, est implantée sur le marché de l’équipement électrique principalement en milieu tertiaire et industriel.(Courants forts et courants faibles).” Source: RevenueBase Database · checked Sep 20, 2026
13	Cats S.A.S	Partial evidence	Villebon Sur Yvette, FranceHQ checked Sep 20, 2026	11-50	16 contacts →
	Partial evidence “Distributeur et représentant dans les domaines de la conversion d’énergie, la communication et le semi-conducteur.” Source: RevenueBase Database · checked Sep 20, 2026
14	rsw.net	Indirect evidence	Groslay, FranceHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Concepteur et fabricant de systèmes d’optimisation d’énergie et de la puissance électrique.” Source: RevenueBase Database · checked Sep 20, 2026
15	Axid Power Electronics	Partial evidence	Biot Sophia Antipolis, FranceHQ checked Sep 20, 2026	1-10	14 contacts →
	Partial evidence “AXID POWER ELECTRONICS Bureau d'étude en électronique de puissance (régulation numérique DSP).” Source: RevenueBase Database · checked Sep 20, 2026
16	Averna Powered By Spherea PP	Partial evidence	Montauban, FranceHQ checked Sep 20, 2026	51-200	13 contacts →
	Partial evidence “Notre ADN La conception de matériels électroniques La conversion d'énergie L'instrumentation en électronique de puissance L’intégration de systèmes d'émulation Notre savoir-faire…” Source: RevenueBase Database · checked Sep 20, 2026
17	R.E.P.	Indirect evidence	Chevigny Saint Sauveur, FranceHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Renouvelable Énergie Projets (R.E.P.) est une entreprise du Groupe Industriel Galilé spécialiste de la mobilité électrique et des projets EnR.” Source: RevenueBase Database · checked Sep 20, 2026
18	Phiseo	Indirect evidence	St Laurent De Mure, FranceHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “La Société PHISEO, fruit d’une association de spécialistes ayant 30 ans d’expérience dans le domaine de l’Energie Secourue, dans la Vente et la Maintenance d’Onduleurs et…” Source: RevenueBase Database · checked Sep 20, 2026
19	Pronergy	Partial evidence	Villebon-sur-yvette, FranceHQ checked Sep 20, 2026	11-50	9 contacts →
	Partial evidence “Le groupe PRONERGY, travaillant depuis plus de 45 ans dans la conversion d'énergie, est spécialisé dans la conception et la fabrication d'alimentations, de convertisseurs de…” Source: RevenueBase Database · checked Sep 20, 2026
20	Cats Power Design & Dolphin Charger	Partial evidence	Pringy, FranceHQ checked Sep 20, 2026	11-50	3 contacts →
	Partial evidence “Aujourd'hui partenaire reconnu, avec plus de 12 millions d'euros de chiffre d'affaires en 2020, Cats power design spécialiste en électronique de puissance sur mesure, intervient…” Source: RevenueBase Database · checked Sep 20, 2026
21	Acore Industrie	Partial evidence	Saint Quentin Fallavier, FranceHQ checked Sep 20, 2026	11-50	2 contacts →
	Partial evidence “ACORE INDUSTRIE DESIGNER AND MANUFACTURER OF CURRENT RECTIFIERS SPECIALIZED IN HIGH POWER Established in 1971, ACORE Industrie is located in Saint-Quentin-Fallavier, in between…” Source: RevenueBase Database · checked Sep 20, 2026
22	3nergy S.A.S	Partial evidence	Aix-en-provence, FranceHQ checked Sep 20, 2026	1-10	1 contacts →
	Partial evidence “3NERGY brings IP and innovation in power elecrtronics, from design to manufacturing, hinging on the disruptive characteristics of GaN transistors.” Source: RevenueBase Database · checked Sep 20, 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 conversion 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 conversion companies.
Partial evidence: Its own public description names part of power conversion companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power conversion 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 22 of 49 power conversion companies based in France

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Power conversion companies based in France at a glance

As of Sep 20, 2026

23.5%Verified-email coverage

25.9Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · Gondecourt

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 49 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 conversion 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 “power conversion 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 conversion 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 conversion 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, 298 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 20, 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 power conversion 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 conversion companies are there based in France?

RevenueBase identified 49 power conversion 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?

Watt & Well, headquartered in Pertuis, tops this list with the largest team on record.

Which city has the most power conversion companies?

Gondecourt leads with 2 headquartered companies, followed by Merignac (2) and Paris (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 298 verified decision-maker contacts tracked across these 49 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 20, 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.