Company lists · Data refreshed September 2026

Top 25 Energy transition companies based in Switzerland

Name: Energy transition companies based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 295 companies tracked

RevenueBase identified 295 energy transition companies headquartered in Switzerland as of September 2026 and tracks 9,895 professional contacts across them, including 5,425 with verified work emails. Zurich is the largest hub.

This list covers energy transition companies headquartered in Switzerland, 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 15, 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 15, 2026 86% judged on-target in blind review

295Companies

9,895Contacts tracked

5,425Verified emails

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The 25 largest energy transition companies based in Switzerland

Ranked by team size

Top 25 of 295 energy transition companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to energy transition 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	BKW AG	Partial evidence	Bern, SwitzerlandHQ checked Sep 15, 2026	10001+	1,148 contacts →
	Partial evidence “The BKW Group is an internationally active energy and infrastructure company based in Berne.” Source: RevenueBase Database · checked Sep 15, 2026
2	Kanadevia Inova	Strong evidence	Zurich, SwitzerlandHQ checked Sep 15, 2026	1,001-5,000	1,051 contacts →
	Strong evidence “Kanadevia Inova is a global greentech leader that pioneers innovative solutions for the energy transition and circular economy.” Source: RevenueBase Database · checked Sep 15, 2026
3	Romande Energie	Partial evidence	Morges, SwitzerlandHQ checked Sep 15, 2026	1,001-5,000	746 contacts →
	Partial evidence “As a leading energy company and the largest utility in French-speaking Switzerland, the Romande Energie Group offers a wide range of sustainable solutions such as energy…” Source: RevenueBase Database · checked Sep 15, 2026
4	EWZ	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 15, 2026	1,001-5,000	721 contacts →
	Indirect evidence “Unsere Erfolgsgeschichte begann mit einer aufsehenerregenden Pioniertat: Im Jahr 1892 floss in der Stadt Zürich erstmals elektrischer Strom.” Source: RevenueBase Database · checked Sep 15, 2026
5	Varo Energy	Strong evidence	SwitzerlandHQ checked Sep 15, 2026	1,001-5,000	557 contacts →
	Strong evidence “VARO Energy (“VARO”) is a leading European energy transition company operating throughout the complete energy supply chain.” Source: RevenueBase Database · checked Sep 15, 2026
6	Primeo Energie	Partial evidence	Münchenstein, SwitzerlandHQ checked Sep 15, 2026	501-1,000	305 contacts →
	Partial evidence “Wir bündeln Energie.” Source: RevenueBase Database · checked Sep 15, 2026
7	Helion Energy AG	Partial evidence	Zuchwil, SwitzerlandHQ checked Sep 15, 2026	501-1,000	254 contacts →
	Partial evidence “Wir planen, realisieren und warten Deine Energiewende.” Source: RevenueBase Database · checked Sep 15, 2026
8	EWL Energie Wasser Luzern	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 15, 2026	201-500	165 contacts →
	Indirect evidence “ewl ist die Wegbereiterin für eine klimaneutrale Zukunft.” Source: RevenueBase Database · checked Sep 15, 2026
9	DXT Commodities	Strong evidence	Lugano, SwitzerlandHQ checked Sep 15, 2026	201-500	162 contacts →
	Strong evidence “We are an international energy trading company committed to the global energy transition, both in the markets we operate in and the choices we make, as individuals, as a company…” Source: RevenueBase Database · checked Sep 15, 2026
10	Candi Solar	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 15, 2026	51-200	150 contacts →
	Indirect evidence “Candi Solar partners with businesses to provide simple, end-to-end solar & battery solutions.” Source: RevenueBase Database · checked Sep 15, 2026
11	Galileo	Partial evidence	Zurich, SwitzerlandHQ checked Sep 15, 2026	51-200	98 contacts →
	Partial evidence “At Galileo, we are delivering long-term green power solutions to energy-hungry customers.” Source: RevenueBase Database · checked Sep 15, 2026
12	Smartenergy	Indirect evidence	Wollerau, SwitzerlandHQ checked Sep 15, 2026	201-500	94 contacts →
	Indirect evidence “We are a Swiss-based investment company.” Source: RevenueBase Database · checked Sep 15, 2026
13	Soltop Energie AG	Partial evidence	Elgg, SwitzerlandHQ checked Sep 15, 2026	51-200	84 contacts →
	Partial evidence “Erneuerbare Energien aus Sonne, Erde, Luft und Wasser nutzbar machen: Diese Kernaufgabe erfüllt die Soltop Energie AG bereits seit über 40 Jahren konsequent und erfolgreich.” Source: RevenueBase Database · checked Sep 15, 2026
14	AD Terra	Partial evidence	Geneva, SwitzerlandHQ checked Sep 15, 2026	51-200	83 contacts →
	Partial evidence “Ad Terra Group is the umbrella organisation regrouping Ad Terra’s consulting, investment and operational activities dedicated to the future of energy.” Source: RevenueBase Database · checked Sep 15, 2026
15	Thomaslloyd Group	Partial evidence	Stadtkreis 2, SwitzerlandHQ checked Sep 15, 2026	1,001-5,000	62 contacts →
	Partial evidence “Founded in 2003, ThomasLloyd is a vertically integrated sustainable energy and technology solutions provider, integrating development, investment, operations, and technology on a…” Source: RevenueBase Database · checked Sep 15, 2026
16	Soleol SA	Indirect evidence	Estavayer-le-lac, SwitzerlandHQ checked Sep 15, 2026	51-200	59 contacts →
	Indirect evidence “Soleol SA est une entreprise fribourgeoise basée à Estavayer-le-Lac, spécialisée dans les énergies renouvelables et parmi les leaders en Suisse dans la réalisation et…” Source: RevenueBase Database · checked Sep 15, 2026
17	Renera AG	Partial evidence	Basel, SwitzerlandHQ checked Sep 15, 2026	51-200	54 contacts →
	Partial evidence “Renera AG (formerly Energie Zukunft Schweiz AG) is a leading force on the road to a fully renewable energy world.” Source: RevenueBase Database · checked Sep 15, 2026
18	Planeco Gmbh	Partial evidence	Arlesheim, SwitzerlandHQ checked Sep 15, 2026	51-200	50 contacts →
	Partial evidence “Willkommen bei Planeco GmbH – deiner wegweisenden Partnerin für innovative Energielösungen!” Source: RevenueBase Database · checked Sep 15, 2026
19	Younergy Solar	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 15, 2026	51-200	45 contacts →
	Partial evidence “At Younergy Solar, we are pioneers in solar energy, offering tailored solutions for a cleaner and sustainable energy future.” Source: RevenueBase Database · checked Sep 15, 2026
20	Clevergie AG	Partial evidence	Wyssachen, SwitzerlandHQ checked Sep 15, 2026	51-200	36 contacts →
	Partial evidence “clevergie konzipiert und baut Erneuerbare-Energie-Anlagen rund erneuerbare Energieanlagen rund um Photovoltaik, Wärmetechnik und E-Mobilität.” Source: RevenueBase Database · checked Sep 15, 2026
21	ALEVO	Partial evidence	Martigny, SwitzerlandHQ checked Sep 15, 2026	201-500	33 contacts →
	Partial evidence “Alevo Energy is an energy service provider (ESP) dedicated to solving one of the world’s greatest energy challenges: the ability to time-shift energy, storing and delivering…” Source: RevenueBase Database · checked Sep 15, 2026
22	Ampere Dynamic	Partial evidence	Zurich, SwitzerlandHQ checked Sep 15, 2026	11-50	29 contacts →
	Partial evidence “Als Experte für nachhaltige und schlüsselfertige Energielösungen im Industrie & Gewerbesektor denken wir Energie ganzheitlich.” Source: RevenueBase Database · checked Sep 15, 2026
23	Sirius Energy SA	Partial evidence	Lugano, SwitzerlandHQ checked Sep 15, 2026	11-50	28 contacts →
	Partial evidence “Sirius Energy SA is a Swiss company based in Lugano, founded by a team of highly skilled professionals with proven track records and decades of experience in renewable assets…” Source: RevenueBase Database · checked Sep 15, 2026
24	Fu-Gen	Partial evidence	Zurich, SwitzerlandHQ checked Sep 15, 2026	11-50	27 contacts →
	Partial evidence “Fu-Gen is an independent power producer that develops, owns and operates renewable energy sources.” Source: RevenueBase Database · checked Sep 15, 2026
25	Aventron	Indirect evidence	Münchenstein, SwitzerlandHQ checked Sep 15, 2026	11-50	25 contacts →
	Indirect evidence “aventron is a well established green power producer based in Switzerland.” Source: RevenueBase Database · checked Sep 15, 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: energy transition 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 energy transition companies.
Partial evidence: Its own public description names part of energy transition companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy transition 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 295 energy transition companies based in Switzerland

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Energy transition companies based in Switzerland at a glance

As of Sep 15, 2026

54.8%Verified-email coverage

33.5Average contacts per company

1-10Median size (employees)

7.1%Largest-city concentration · Zurich

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

163

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 Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 295 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 energy transition 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 Switzerland whose own description of what they do matches “energy transition 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 energy transition 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 energy transition companies, and records with no verified work email. Companies headquartered outside Switzerland 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, 5,425 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 15, 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 energy transition 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 energy transition companies are there based in Switzerland?

RevenueBase identified 295 energy transition companies headquartered in Switzerland 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?

BKW AG, headquartered in Bern, tops this list with the largest team on record.

Which city has the most energy transition companies?

Zurich leads with 21 headquartered companies, followed by Lausanne (15) and Zug (13).

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 5,425 verified decision-maker contacts tracked across these 295 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 15, 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.