Company lists · Data refreshed September 2026

Top 25 Connected infrastructure companies based in France

Name: Connected infrastructure 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 135 companies tracked

RevenueBase identified 135 connected infrastructure companies headquartered in France as of September 2026 and tracks 20,049 professional contacts across them, including 1,540 with verified work emails. Paris is the largest hub.

This list covers connected infrastructure 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

135Companies

20,049Contacts tracked

1,540Verified emails

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The 25 largest connected infrastructure companies based in France

Ranked by team size

Top 25 of 135 connected infrastructure 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 connected infrastructure 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	Legrand	Partial evidence	Limoges, FranceHQ checked Sep 19, 2026	10001+	6,267 contacts →
	Partial evidence “Legrand is a global specialist in electrical and digital building infrastructures, dedicated to supporting technological, societal and environmental change around the globe.” Source: RevenueBase Database · checked Sep 19, 2026
2	Comeca Group	Indirect evidence	Saint Mathieu De Tréviers (montpellier), FranceHQ checked Sep 19, 2026	1,001-5,000	604 contacts →
	Indirect evidence “COMECA designs, manufactures and maintain energy management solutions near your home and all around the world.” Source: RevenueBase Database · checked Sep 19, 2026
3	Equans Digital	Strong evidence	Courbevoie, FranceHQ checked Sep 19, 2026	5,001-10,000	393 contacts →
	Strong evidence “Equans Digital connects OT, IT and data to make your infrastructures truly controllable.” Source: RevenueBase Database · checked Sep 19, 2026
4	Egis EN France	Indirect evidence	Guyancourt, FranceHQ checked Sep 19, 2026	10001+	292 contacts →
	Indirect evidence “Egis est un acteur international du conseil, de l’ingénierie de la construction et des services à la mobilité.” Source: RevenueBase Database · checked Sep 19, 2026
5	EPI Etudes ET Projets Industriels	Partial evidence	Bry Sur Marne, FranceHQ checked Sep 19, 2026	51-200	142 contacts →
	Partial evidence “EPI est une société d'ingénierie, qui exerce ses activités dans les domaines des infrastructures, du bâtiment et des Energies et de l'industrie pour :> l'électricité et les…” Source: RevenueBase Database · checked Sep 19, 2026
6	Esmé Solutions	Partial evidence	Ivry-sur-seine, FranceHQ checked Sep 19, 2026	51-200	108 contacts →
	Partial evidence “ESMÉ SOLUTIONS, acteur historique du marché des solutions pour les bâtiments connectés, est une filiale du Groupe Eren, leader du marché de la production d’énergies renouvelables…” Source: RevenueBase Database · checked Sep 19, 2026
7	WIT	Indirect evidence	Nice Cedex 3, FranceHQ checked Sep 19, 2026	51-200	90 contacts →
	Indirect evidence “WIT est un industriel français, qui développe des solutions technologiques pour : piloter, sécuriser et exploiter, à distance tout type d’installations techniques.” Source: RevenueBase Database · checked Sep 19, 2026
8	Actia Energy	Indirect evidence	Le Puy Ste Reparade, FranceHQ checked Sep 19, 2026	201-500	73 contacts →
	Indirect evidence “Découvrez ACTIA Energy, la division spécialisée du groupe ACTIA, partenaire de confiance pour la gestion, le transport et la distribution de l'énergie.” Source: RevenueBase Database · checked Sep 19, 2026
9	Enfrasys	Indirect evidence	Rillieux-la-pape, FranceHQ checked Sep 19, 2026	51-200	63 contacts →
	Indirect evidence “Depuis plus de 40 ans, Enfrasys propose de mettre à la disposition de des projets qui lui sont confiés, son expertise des métiers de - Conception : FMDS, Conception, Avant…” Source: RevenueBase Database · checked Sep 19, 2026
10	Groupe API	Partial evidence	Yffiniac, FranceHQ checked Sep 19, 2026	51-200	62 contacts →
	Partial evidence “Le Groupe API, intégrateur de solutions de pilotage des process et des infrastructures tertiaires et industrielles, poursuit activement son développement.” Source: RevenueBase Database · checked Sep 19, 2026
11	C4e	Indirect evidence	Saint-pierre-du-perray, FranceHQ checked Sep 19, 2026	51-200	57 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
12	Team Réseaux	Indirect evidence	Evreux, FranceHQ checked Sep 19, 2026	51-200	57 contacts →
	Indirect evidence “Avec l'avènement des technologie de l'information, l'ensemble de la chaîne énergétique devient intelligent - Les réseaux de distribution (SMART GRID)- Les villes (SMART CITY)- Les…” Source: RevenueBase Database · checked Sep 19, 2026
13	ENTRA	Indirect evidence	Aubervilliers, FranceHQ checked Sep 19, 2026	51-200	53 contacts →
	Indirect evidence “Créée en 1945, la société ENTRA, filiale du Groupe SYLPA depuis 2017, ancrée historiquement sur le bassin économique de la Seine Saint Denis et du Val d'Oise, adresse ses…” Source: RevenueBase Database · checked Sep 19, 2026
14	Woit Group	Partial evidence	Rosult, FranceHQ checked Sep 19, 2026	51-200	48 contacts →
	Partial evidence “Électricité, automatisation, connectivité : chez WOIT GROUP, nous relions nos expertises en conception, réalisation et maintenance pour répondre à vos enjeux et accompagner vos…” Source: RevenueBase Database · checked Sep 19, 2026
15	Nexloop France	Partial evidence	Boulogne Billancourt, FranceHQ checked Sep 19, 2026	51-200	44 contacts →
	Partial evidence “Headquartered in Paris, France, and with infrastructure spanning the entire country, Nexloop provides Dark Fiber, Dedicated Internet Access (FTTO), WDM and hosting facilities…” Source: RevenueBase Database · checked Sep 19, 2026
16	Energimotique	Indirect evidence	Puteaux, FranceHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “Créé en 2009, ENERGIMOTIQUE est le spécialiste GTB du Groupe NERCO.” Source: RevenueBase Database · checked Sep 19, 2026
17	CR System	Indirect evidence	Saint Ouen L'aumône, FranceHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “Intégrateur immoticien depuis 2010, CR SYSTEM vous accompagne de la conception à la réalisation de vos bâtiments intelligents.” Source: RevenueBase Database · checked Sep 19, 2026
18	Cyrisea	Indirect evidence	Carquefou, FranceHQ checked Sep 19, 2026	11-50	38 contacts →
	Indirect evidence “CYRISEA accompagne ses clients dans la conception et la mise en œuvre de Systèmes Intelligents de Gestion d’Energie - Gestion Technique et Énergétique des Bâtiments (GTEB)-…” Source: RevenueBase Database · checked Sep 19, 2026
19	Iboco France	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	501-1,000	36 contacts →
	Partial evidence “Iboco, spécialiste en cheminement de l’énergie, est un acteur incontournable sur les segments du Résidentiel, du Tertiaire, de l’Industrie et de l’Infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
20	Sys&com	Indirect evidence	Montreuil, FranceHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Société d'intégration de solution multimarque / multitechnique : Smart Building, Régulation CVC, Confort, GTC/GTB & Energie.” Source: RevenueBase Database · checked Sep 19, 2026
21	Osmose	Indirect evidence	Roquefort Les Pins, FranceHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “Leader du secteur du CVC et de l'efficacité énergétique, Osmose fournit des solutions innovantes et clés en main aux industriels.” Source: RevenueBase Database · checked Sep 19, 2026
22	Calasys	Indirect evidence	Rillieux La Pape, FranceHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “Créée en 2002 et située à Rillieux-la-Pape (69), CALASYS est experte dans le développement d’applications d’automatismes, d’informatique industrielle et d’informatique…” Source: RevenueBase Database · checked Sep 19, 2026
23	Arcom - Citylone	Indirect evidence	Chalon Sur Saone - Lyon, FranceHQ checked Sep 19, 2026	51-200	26 contacts →
	Indirect evidence “Entité du GROUPE SYNOV, le Groupe ARCOM/CITYLONE est une PME française, qui conçoit, fabrique et commercialise des solutions multi-métiers pour l’intelligence des bâtiments et de…” Source: RevenueBase Database · checked Sep 19, 2026
24	Meta 2e	Indirect evidence	Saint Etienne, FranceHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “META 2e est intégrateur de solutions en Gestion Technique du Bâtiment et optimisation énergétique.” Source: RevenueBase Database · checked Sep 19, 2026
25	Sensing Vision	Indirect evidence	Betton, FranceHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Sensing Vision développe, déploie et supervise des plateformes pour - l'efficacité et le pilotage énergétique des bâtiments- la télérelève des compteurs d'eau et la sécurisation…” 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: connected infrastructure 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 connected infrastructure companies.
Partial evidence: Its own public description names part of connected infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name connected infrastructure 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 135 connected infrastructure companies based in France

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Connected infrastructure companies based in France at a glance

As of Sep 19, 2026

7.7%Verified-email coverage

148.5Average contacts per company

11-50Median size (employees)

5.9%Largest-city concentration · Paris

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 135 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 connected infrastructure 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 “connected infrastructure 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 connected infrastructure 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 connected infrastructure 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, 1,540 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 connected infrastructure 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 connected infrastructure companies are there based in France?

RevenueBase identified 135 connected infrastructure 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?

Legrand, headquartered in Limoges, tops this list with the largest team on record.

Which city has the most connected infrastructure companies?

Paris leads with 8 headquartered companies, followed by Lyon (4) and Lille (3).

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 1,540 verified decision-maker contacts tracked across these 135 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.