Company lists · Data refreshed September 2026

Top 25 Clean energy suppliers based in Switzerland

Name: Clean energy suppliers based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 292 companies tracked

RevenueBase identified 292 clean energy suppliers headquartered in Switzerland as of September 2026 and tracks 7,874 professional contacts across them, including 4,183 with verified work emails. Zurich is the largest hub.

This list covers clean energy suppliers 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 16, 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 16, 2026 86% judged on-target in blind review

292Companies

7,874Contacts tracked

4,183Verified emails

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The 25 largest clean energy suppliers based in Switzerland

Ranked by team size

Top 25 of 292 clean energy suppliers based in Switzerland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to clean energy suppliers: 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	Romande Energie	Partial evidence	Morges, SwitzerlandHQ checked Sep 16, 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 16, 2026
2	EWZ	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 16, 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 16, 2026
3	Repower	Partial evidence	Poschiavo, SwitzerlandHQ checked Sep 16, 2026	501-1,000	367 contacts →
	Partial evidence “Repower has been operating as an electricity producer, distribution grid operator and energy trader for 120 years.” Source: RevenueBase Database · checked Sep 16, 2026
4	Primeo Energie	Partial evidence	Münchenstein, SwitzerlandHQ checked Sep 16, 2026	501-1,000	305 contacts →
	Partial evidence “Wir bündeln Energie.” Source: RevenueBase Database · checked Sep 16, 2026
5	EBL Genossenschaft Elektra Baselland	Partial evidence	Liestal, SwitzerlandHQ checked Sep 16, 2026	201-500	282 contacts →
	Partial evidence “For decades, we at EBL have been specifically promoting the generation of energy through new renewable energy and actively advocating a more economical use of energy, which is…” Source: RevenueBase Database · checked Sep 16, 2026
6	AEW Energie AG	Partial evidence	Aarau, SwitzerlandHQ checked Sep 16, 2026	201-500	277 contacts →
	Partial evidence “AEW Energie AG is an independent company of the Canton of Aargau.” Source: RevenueBase Database · checked Sep 16, 2026
7	OIKEN	Indirect evidence	Sion, SwitzerlandHQ checked Sep 16, 2026	501-1,000	226 contacts →
	Indirect evidence “Avenir activé.” Source: RevenueBase Database · checked Sep 16, 2026
8	Viteos SA	Indirect evidence	Neuchâtel, SwitzerlandHQ checked Sep 16, 2026	201-500	190 contacts →
	Indirect evidence “Référence neuchâteloise de la transition énergétique, Viteos assure la fourniture d’énergies ainsi que la gestion des réseaux d’eau, d’électricité, de gaz et de chauffage/froid à…” Source: RevenueBase Database · checked Sep 16, 2026
9	EWL Energie Wasser Luzern	Indirect evidence	Luzern, SwitzerlandHQ checked Sep 16, 2026	201-500	165 contacts →
	Indirect evidence “ewl ist die Wegbereiterin für eine klimaneutrale Zukunft.” Source: RevenueBase Database · checked Sep 16, 2026
10	Groupe Gruyère Energie	Partial evidence	Bulle, SwitzerlandHQ checked Sep 16, 2026	201-500	157 contacts →
	Partial evidence “Active depuis plus de 130 ans et principal promoteur de la transition énergétique dans la région, Gruyère Energie SA est une entreprise active dans l’approvisionnement et la…” Source: RevenueBase Database · checked Sep 16, 2026
11	Galileo	Partial evidence	Zurich, SwitzerlandHQ checked Sep 16, 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 16, 2026
12	Smartenergy	Indirect evidence	Wollerau, SwitzerlandHQ checked Sep 16, 2026	201-500	94 contacts →
	Indirect evidence “We are a Swiss-based investment company.” Source: RevenueBase Database · checked Sep 16, 2026
13	Soltop Energie AG	Partial evidence	Elgg, SwitzerlandHQ checked Sep 16, 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 16, 2026
14	Thomaslloyd Group	Partial evidence	Stadtkreis 2, SwitzerlandHQ checked Sep 16, 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 16, 2026
15	Elektrizitätswerk Obwalden	Partial evidence	Kerns, SwitzerlandHQ checked Sep 16, 2026	51-200	61 contacts →
	Partial evidence “Als Energiedienstleister und öffentlich-rechtliches Unternehmen versorgt das Elektrizitätswerk Obwalden (EWO) seine Kundinnen und Kunden mit nachhaltigem Strom.” Source: RevenueBase Database · checked Sep 16, 2026
16	Soleol SA	Indirect evidence	Estavayer-le-lac, SwitzerlandHQ checked Sep 16, 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 16, 2026
17	VOÉ	Indirect evidence	Orbe, SwitzerlandHQ checked Sep 16, 2026	51-200	55 contacts →
	Indirect evidence “VOé regroupe l’expérience et les compétences de sociétés régionales actives depuis des décennies dans le domaine de l’énergie et du multimédia.” Source: RevenueBase Database · checked Sep 16, 2026
18	Renera AG	Partial evidence	Basel, SwitzerlandHQ checked Sep 16, 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 16, 2026
19	Planeco Gmbh	Partial evidence	Arlesheim, SwitzerlandHQ checked Sep 16, 2026	51-200	50 contacts →
	Partial evidence “Willkommen bei Planeco GmbH – deiner wegweisenden Partnerin für innovative Energielösungen!” Source: RevenueBase Database · checked Sep 16, 2026
20	Swisspower Renewables	Partial evidence	Zug, SwitzerlandHQ checked Sep 16, 2026	51-200	49 contacts →
	Partial evidence “Swisspower Renewables Group focuses on innovative technologies and sustainable solutions to promote the energy transition.” Source: RevenueBase Database · checked Sep 16, 2026
21	EWB Elektrizitäts- UND Wasserwerk DER Stadt Buchs	Partial evidence	Buchs, SwitzerlandHQ checked Sep 16, 2026	51-200	46 contacts →
	Partial evidence “Wir versorgen Buchs mit Energie, Wasser und Kommunikation.” Source: RevenueBase Database · checked Sep 16, 2026
22	Younergy Solar	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 16, 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 16, 2026
23	Clevergie AG	Partial evidence	Wyssachen, SwitzerlandHQ checked Sep 16, 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 16, 2026
24	SWG Grenchen	Partial evidence	Grenchen, SwitzerlandHQ checked Sep 16, 2026	51-200	35 contacts →
	Partial evidence “Wir sind engagierte Produzentin und Anbieterin von erneuerbaren Energien, sauberem Wasser sowie zukunftsweisenden Dienstleistungen.” Source: RevenueBase Database · checked Sep 16, 2026
25	DIE Werke Versorgung Wallisellen AG	Indirect evidence	Wallisellen, SwitzerlandHQ checked Sep 16, 2026	51-200	34 contacts →
	Indirect evidence “Komfortabel leben» lautet unser Slogan.” Source: RevenueBase Database · checked Sep 16, 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: clean energy suppliers. 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 clean energy suppliers.
Partial evidence: Its own public description names part of clean energy suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name clean energy suppliers. 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 292 clean energy suppliers based in Switzerland

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Clean energy suppliers based in Switzerland at a glance

As of Sep 16, 2026

53.1%Verified-email coverage

27.0Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · Zurich

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

147

11-50

102

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 292 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 clean energy suppliers, 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 “clean energy suppliers”. 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 clean energy suppliers), 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 clean energy suppliers, 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, 4,183 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 16, 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 clean energy suppliers, 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 clean energy suppliers are there based in Switzerland?

RevenueBase identified 292 clean energy suppliers 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?

Romande Energie, headquartered in Morges, tops this list with the largest team on record.

Which city has the most clean energy suppliers?

Zurich leads with 16 headquartered companies, followed by Zug (11) and Lausanne (9).

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 4,183 verified decision-maker contacts tracked across these 292 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 16, 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.