Company lists · Data refreshed September 2026

Top 25 Grid interconnection consulting firms based in France

Name: Grid interconnection consulting firms based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 285 companies tracked

RevenueBase identified 285 grid interconnection consulting firms headquartered in France as of September 2026 and tracks 4,457 professional contacts across them, including 1,491 with verified work emails. Paris is the largest hub.

This list covers grid interconnection consulting firms 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 28, 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 28, 2026 86% judged on-target in blind review

285Companies

4,457Contacts tracked

1,491Verified emails

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The 25 largest grid interconnection consulting firms based in France

Ranked by team size

Top 25 of 285 grid interconnection consulting firms based in France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to grid interconnection consulting firms: 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	Omexom	Indirect evidence	Nanterre, FranceHQ checked Sep 28, 2026	5,001-10,000	1,903 contacts →
	Indirect evidence “With today's global energy sector undergoing constant change, Omexom works with its clients in delivering on the promises of the energy transition.” Source: RevenueBase Database · checked Sep 28, 2026
2	Groupe Betem	Indirect evidence	Toulouse, FranceHQ checked Sep 28, 2026	201-500	141 contacts →
	Indirect evidence “Le GROUPE BETEM, Bureau d’études pluridisciplinaire dans le bâtiment et les réseaux, créé en 1967, a pu au travers de la diversité et du nombre d’opérations réalisées, se forger…” Source: RevenueBase Database · checked Sep 28, 2026
3	RTE International	Indirect evidence	Courbevoie, FranceHQ checked Sep 28, 2026	51-200	107 contacts →
	Indirect evidence “RTE international is a consultancy and engineering company whose activities cover all areas of electricity transmission.” Source: RevenueBase Database · checked Sep 28, 2026
4	Spie Thépault	Indirect evidence	Cergy, FranceHQ checked Sep 28, 2026	201-500	98 contacts →
	Indirect evidence “SPIE Thépault est le spécialiste historique des réseaux électriques haute tension.” Source: RevenueBase Database · checked Sep 28, 2026
5	Tecsol	Indirect evidence	Perpignan, FranceHQ checked Sep 28, 2026	11-50	89 contacts →
	Indirect evidence “Bureau d'études solaires indépendant” Source: RevenueBase Database · checked Sep 28, 2026
6	Arnest	Indirect evidence	Puteaux, FranceHQ checked Sep 28, 2026	51-200	72 contacts →
	Indirect evidence “Organisée sur un modèle de start-up, Arnest réalise des services d’ingénierie et de management de projets pour le secteur de l'énergie.” Source: RevenueBase Database · checked Sep 28, 2026
7	Greensolver	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	70 contacts →
	Indirect evidence “Founded in 2008, Greensolver is an independent technical advisor specializing in solar, BESS and wind power assets.” Source: RevenueBase Database · checked Sep 28, 2026
8	Innovation Energie Développement IED	Partial evidence	Métropole De Lyon, FranceHQ checked Sep 28, 2026	51-200	54 contacts →
	Partial evidence “Innovation Energy Development - IED - is a consulting and engineering company engaged in international cooperation since 1988.” Source: RevenueBase Database · checked Sep 28, 2026
9	Ater Environnement	Indirect evidence	Grandfresnoy, FranceHQ checked Sep 28, 2026	11-50	52 contacts →
	Indirect evidence “ATER Environnement est un bureau d’études pluridisciplinaire, composé de 52 collaborateurs aux compétences complémentaires, experts dans les domaines des énergies renouvelables…” Source: RevenueBase Database · checked Sep 28, 2026
10	ELYS	Indirect evidence	Nimes, FranceHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “ELYS, ingénierie indépendante pour la construction de parcs éoliens, de centrales solaires PV, BESS et de postes HTB privés.” Source: RevenueBase Database · checked Sep 28, 2026
11	Acteam ENR	Indirect evidence	Toulouse, FranceHQ checked Sep 28, 2026	11-50	43 contacts →
	Indirect evidence “Société d'Ingénierie, Conseil et Construction, ACTEAM ENR accompagne - Industriels, Promoteurs, Collectivités et Agriculteurs dans la mise en œuvre de projet solaire- Maitre…” Source: RevenueBase Database · checked Sep 28, 2026
12	Clean Horizon	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	39 contacts →
	Indirect evidence “Active worldwide since 2009, Clean Horizon is 100% dedicated to energy storage.” Source: RevenueBase Database · checked Sep 28, 2026
13	Capsim	Indirect evidence	Aix-en-provence, FranceHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “CAPSIM is your specialist partner on the behaviour of electrical networks and electrotechnical systems.” Source: RevenueBase Database · checked Sep 28, 2026
14	Omnegy By Epsa	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “OMNEGY est un cabinet de conseil en énergie pour les entreprises, spécialiste des achats et des contrats d'énergie.” Source: RevenueBase Database · checked Sep 28, 2026
15	Copergreen	Indirect evidence	Clermont-ferrand, FranceHQ checked Sep 28, 2026	11-50	34 contacts →
	Indirect evidence “COPERGREEN - Integrator of photovoltaic projects.” Source: RevenueBase Database · checked Sep 28, 2026
16	Topo Etudes	Indirect evidence	Lisieux, FranceHQ checked Sep 28, 2026	51-200	34 contacts →
	Indirect evidence “TOPO-ETUDES Est un bureau d'études spécialisé dans la conception des réseaux aériens et souterrains de Distribution d'Energie, la société a été créée en 1990 et a développé des…” Source: RevenueBase Database · checked Sep 28, 2026
17	Laglasse & Omhovere L Fayat Énergie Services	Indirect evidence	Marly, FranceHQ checked Sep 28, 2026	11-50	30 contacts →
	Indirect evidence “LAGLASSE & OMHOVERE, créée en 1986, est un bureau d’études spécialisé dans la conception et l’optimisation des réseaux électriques aériens et souterrains à Haute et Très Haute…” Source: RevenueBase Database · checked Sep 28, 2026
18	CEREL	Indirect evidence	Roissy-En-France, FranceHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “CEREL existe car nous croyons fermement que la réponse aux défis énergétiques de demain passe par la modernisation et la fiabilisation des infrastructures électriques…” Source: RevenueBase Database · checked Sep 28, 2026
19	Imes Group	Indirect evidence	Ennery, FranceHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “IMES delivers services across the entire lifecycle of electricity infrastructure projects, from preliminary design, tendering to commissioning.” Source: RevenueBase Database · checked Sep 28, 2026
20	ELTIS	Indirect evidence	Meythet, FranceHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Eltis réunit au sein d’une même entreprise tous les métiers de l’ingénierie électrique pour prendre en main l’ensemble vos besoins : depuis l’installation de votre station solaire…” Source: RevenueBase Database · checked Sep 28, 2026
21	Syneria	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Syneria is an international consultancy firm providing technical advisory services throughout the full lifecycle of renewable energy projects.” Source: RevenueBase Database · checked Sep 28, 2026
22	Resipelec	Indirect evidence	Templemars, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Resipelec opère et met en œuvre ses services et compétences dans tous secteurs liés à l'ingénierie électrique HT/BT/TBT, l'automatisme et les réseaux convergents.” Source: RevenueBase Database · checked Sep 28, 2026
23	Natural Power France	Indirect evidence	Nantes, FranceHQ checked Sep 28, 2026	201-500	19 contacts →
	Indirect evidence “Natural Power, fort d’une expertise unique de plus de 20 ans en gestion de projet, est un prestataire indépendant de conseils et services pour la valorisation des énergies…” Source: RevenueBase Database · checked Sep 28, 2026
24	Kilowattsol	Indirect evidence	Lyon, FranceHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “An investment in knowledge always pays the best interest” – Benjamin Franklin kiloWattsol is a leading independent consultancy and technical advisory in the field of solar energy.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ariess Consulting	Partial evidence	Méré, FranceHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “ARIESS Consulting est un Bureau de Conseils et d’Études techniques indépendant et pluridisciplinaire, spécialisé Digital.” Source: RevenueBase Database · checked Sep 28, 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: grid interconnection consulting firms. 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 grid interconnection consulting firms.
Partial evidence: Its own public description names part of grid interconnection consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name grid interconnection consulting firms. 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 285 grid interconnection consulting firms based in France

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Grid interconnection consulting firms based in France at a glance

As of Sep 28, 2026

33.5%Verified-email coverage

15.6Average contacts per company

1-10Median size (employees)

11.9%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

191

11-50

51-200

201-500

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 285 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 grid interconnection consulting firms, 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 “grid interconnection consulting firms”. 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 grid interconnection consulting firms), 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 grid interconnection consulting firms, 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, 1,491 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 28, 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.

Grid interconnection consulting firms by metro

Grid interconnection consulting firms in Paris34

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 grid interconnection consulting firms, 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 grid interconnection consulting firms are there based in France?

RevenueBase identified 285 grid interconnection consulting firms 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?

Omexom, headquartered in Nanterre, tops this list with the largest team on record.

Which city has the most grid interconnection consulting firms?

Paris leads with 34 headquartered companies, followed by Lyon (11) and Marseille (8).

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 1,491 verified decision-maker contacts tracked across these 285 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 28, 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.