Company lists · Data refreshed September 2026

Top 25 Solar energy companies based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 501 companies tracked

RevenueBase identified 501 solar energy companies headquartered in Switzerland as of September 2026 and tracks 3,148 professional contacts across them, including 1,185 with verified work emails and 98 with mobile numbers. Zurich is the largest hub.

This list covers solar energy 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 6, 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 6, 2026 86% judged on-target in blind review

501Companies

3,148Contacts tracked

1,185Verified emails

98Mobile numbers

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The 25 largest solar energy companies based in Switzerland

Ranked by team size

Top 25 of 501 solar energy companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to solar energy 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	Groupe Gruyère Energie	Partial evidence	Bulle, SwitzerlandHQ checked Sep 6, 2026	201-500	157 contacts →
	“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: company website · checked Sep 6, 2026
2	Candi Solar	Partial evidence	Zurich, SwitzerlandHQ checked Sep 6, 2026	51-200	150 contacts →
	“Candi Solar partners with businesses to provide simple, end-to-end solar & battery solutions.” Source: company website · checked Sep 6, 2026
3	Megasol Energie AG	Partial evidence	Deitingen, SwitzerlandHQ checked Sep 6, 2026	201-500	85 contacts →
	“Built with cutting-edge technology, economical to operate and easy to install: Solar systems from Megasol combine performance, reliability and appearance - from standardized…” Source: company website · checked Sep 6, 2026
4	Soltop Energie AG	Partial evidence	Elgg, SwitzerlandHQ checked Sep 6, 2026	51-200	84 contacts →
	“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: company website · checked Sep 6, 2026
5	Ciel Electricité SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 6, 2026	51-200	74 contacts →
	“CIEL est une marque d’Eiffage Énergie Systèmes Suisse.” Source: company website · checked Sep 6, 2026
6	Solarmarkt	Strong evidence	Aarau, SwitzerlandHQ checked Sep 6, 2026	51-200	64 contacts →
	“35 years ago, Solarmarkt was one of the pioneers in solar energy; today, the company is Switzerland's number one wholesaler of PV components.” Source: company website · checked Sep 6, 2026
7	Thomaslloyd Group	Partial evidence	Stadtkreis 2, SwitzerlandHQ checked Sep 6, 2026	1,001-5,000	62 contacts →
	“Founded in 2003, ThomasLloyd is a vertically integrated sustainable energy and technology solutions provider, integrating development, investment, operations, and technology on a…” Source: company website · checked Sep 6, 2026
8	Soleol SA	Indirect evidence	Estavayer-le-lac, SwitzerlandHQ checked Sep 6, 2026	51-200	59 contacts →
	“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: company website · checked Sep 6, 2026
9	Solstis SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 6, 2026	51-200	53 contacts →
	“Solstis vous fournit de l'électricité solaire depuis 1996.” Source: company website · checked Sep 6, 2026
10	Planeco Gmbh	Partial evidence	Arlesheim, SwitzerlandHQ checked Sep 6, 2026	51-200	50 contacts →
	“Willkommen bei Planeco GmbH – deiner wegweisenden Partnerin für innovative Energielösungen!” Source: company website · checked Sep 6, 2026
11	Tritec AG	Indirect evidence	Steg, SwitzerlandHQ checked Sep 6, 2026	51-200	47 contacts →
	“Mit tritec – der neuen Marke von TRITEC, winsun und alectron – verlassen Sie sich auf einen echten Partner mit über 30 Jahren Erfahrung in der Photovoltaik.” Source: company website · checked Sep 6, 2026
12	Younergy Solar	Strong evidence	Lausanne, SwitzerlandHQ checked Sep 6, 2026	51-200	45 contacts →
	“At Younergy Solar, we are pioneers in solar energy, offering tailored solutions for a cleaner and sustainable energy future.” Source: company website · checked Sep 6, 2026
13	Krannich Solar Schweiz	Strong evidence	Spreitenbach, SwitzerlandHQ checked Sep 6, 2026	51-200	42 contacts →
	“Über uns: Seit 1995 ist Krannich Solar der starke Partner für Photovoltaik-Installateure und bietet alles, was die Energie-Revolution vorantreibt: fundierte Beratung, effektive…” Source: company website · checked Sep 6, 2026
14	Amaudruz SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 6, 2026	51-200	39 contacts →
	“Entreprise générale d'installations électriques, Amaudruz SA naît en 1934 sous la direction de Lucien Amaudruz.” Source: company website · checked Sep 6, 2026
15	Clevergie AG	Partial evidence	Wyssachen, SwitzerlandHQ checked Sep 6, 2026	51-200	36 contacts →
	“clevergie konzipiert und baut Erneuerbare-Energie-Anlagen rund erneuerbare Energieanlagen rund um Photovoltaik, Wärmetechnik und E-Mobilität.” Source: company website · checked Sep 6, 2026
16	Edmondo Franchini SA	Partial evidence	Lamone - Lugano, SwitzerlandHQ checked Sep 6, 2026	51-200	35 contacts →
	“La progettazione, l'esecuzione, l'automazione e la riparazione di impianti elettrici a corrente forte e debole e tutte le applicazioni, energie alternative, impianti fotovoltaici…” Source: company website · checked Sep 6, 2026
17	Ampere Dynamic	Partial evidence	Zurich, SwitzerlandHQ checked Sep 6, 2026	11-50	29 contacts →
	“Als Experte für nachhaltige und schlüsselfertige Energielösungen im Industrie & Gewerbesektor denken wir Energie ganzheitlich.” Source: company website · checked Sep 6, 2026
18	Suntechnics Fabrisolar AG	Partial evidence	Effretikon, SwitzerlandHQ checked Sep 6, 2026	51-200	24 contacts →
	“Seit über 40 Jahren dreht sich bei SunTechnics Fabrisolar alles um das Thema erneuerbare Energien.” Source: company website · checked Sep 6, 2026
19	Resiq AG	Indirect evidence	Burgdorf, SwitzerlandHQ checked Sep 6, 2026	11-50	24 contacts →
	“RESiQ setzt sich für den erfolgreichen Einsatz von erneuerbaren Ressourcen (RES) ein und ermöglicht durch intelligente technische Lösungen (iQ) deren effiziente und nachhaltige…” Source: company website · checked Sep 6, 2026
20	The Meeco Group	Partial evidence	Zug, SwitzerlandHQ checked Sep 6, 2026	51-200	24 contacts →
	“As a leader in clean renewable energy, meeco™ has provided clients with services and solutions for over 423 MW across three continents.” Source: company website · checked Sep 6, 2026
21	Solstis Energy AG	Partial evidence	Solothurn, SwitzerlandHQ checked Sep 6, 2026	51-200	23 contacts →
	“Mit ganzheitlichen Solarlösungen begleiten wir unsere Kundinnen und Kunden auf dem Weg zur nachhaltigen Energieversorgung und -nutzung.” Source: company website · checked Sep 6, 2026
22	Mitrelli Energy	Indirect evidence	Frauenfeld, SwitzerlandHQ checked Sep 6, 2026	11-50	23 contacts →
	“Power.” Source: company website · checked Sep 6, 2026
23	Electro-Sol SA	Indirect evidence	Cossonay, SwitzerlandHQ checked Sep 6, 2026	11-50	23 contacts →
	“Electro-Sol.” Source: company website · checked Sep 6, 2026
24	Ernst Schweizer Solar	Indirect evidence	Hedingen, SwitzerlandHQ checked Sep 6, 2026	201-500	23 contacts →
	“Mounting systems from Schweizer bring forward-looking photovoltaic technology to all kinds of building throughout Europe with minimal effort.” Source: company website · checked Sep 6, 2026
25	Sonnwende	Indirect evidence	Basel, SwitzerlandHQ checked Sep 6, 2026	11-50	22 contacts →
	“Sonnwende GmbH \| Photovoltaik und Wärme \| Basel.” Source: company website · checked Sep 6, 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: solar energy 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 solar energy companies.
Partial evidence: Its own public description names part of solar energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name solar energy 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 501 solar energy companies based in Switzerland

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Solar energy companies based in Switzerland at a glance

As of Sep 6, 2026

37.6%Verified-email coverage

3.1%Mobile-number coverage

6.3Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · Zurich

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

300

11-50

161

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

1,1040–30

8031–60

061–90

090–180

1180+

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 solar energy 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 “solar energy 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 solar energy 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 solar energy 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, 1,185 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 6, 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 solar energy 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 solar energy companies are there based in Switzerland?

RevenueBase identified 501 solar energy 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?

Groupe Gruyère Energie, headquartered in Bulle, tops this list with the largest team on record.

Which city has the most solar energy companies?

Zurich leads with 16 headquartered companies, followed by Lausanne (14) and Basel (12).

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 1,185 verified decision-maker contacts tracked across these 501 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 6, 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.