Company lists · Data refreshed September 2026

Top 25 Utility power suppliers based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 65 companies tracked

RevenueBase identified 65 utility power suppliers headquartered in Switzerland as of September 2026 and tracks 4,865 professional contacts across them, including 2,772 with verified work emails. Lausanne is the largest hub.

This list covers utility power 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 22, 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 22, 2026 86% judged on-target in blind review

65Companies

4,865Contacts tracked

2,772Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest utility power suppliers based in Switzerland

Ranked by team size

Top 25 of 65 utility power suppliers based in Switzerland, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to utility power 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	Groupe E	Partial evidence	Granges-paccot, SwitzerlandHQ checked Sep 22, 2026	1,001-5,000	1,114 contacts →
	Partial evidence “Groupe E is a utility active in the production, distribution, sales, trading of electricity, as well as energy related services (telecommunications, district heating, public…” Source: RevenueBase Database · checked Sep 22, 2026
2	Romande Energie	Partial evidence	Morges, SwitzerlandHQ checked Sep 22, 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 22, 2026
3	EWZ	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 22, 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 22, 2026
4	Repower	Indirect evidence	Poschiavo, SwitzerlandHQ checked Sep 22, 2026	501-1,000	367 contacts →
	Indirect evidence “Repower has been operating as an electricity producer, distribution grid operator and energy trader for 120 years.” Source: RevenueBase Database · checked Sep 22, 2026
5	Primeo Energie	Indirect evidence	Münchenstein, SwitzerlandHQ checked Sep 22, 2026	501-1,000	305 contacts →
	Indirect evidence “Wir bündeln Energie.” Source: RevenueBase Database · checked Sep 22, 2026
6	WWZ AG Energie, Telekom, E-Mobilität, Wasser	Indirect evidence	Zug, SwitzerlandHQ checked Sep 22, 2026	501-1,000	227 contacts →
	Indirect evidence “Viel Zug drin – seit über 130 Jahren.” Source: RevenueBase Database · checked Sep 22, 2026
7	Viteos SA	Indirect evidence	Neuchâtel, SwitzerlandHQ checked Sep 22, 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 22, 2026
8	Services Industriels DE Lausanne	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 22, 2026	501-1,000	158 contacts →
	Indirect evidence “Electricité, chaleur, gaz et télécommunications : nous sommes à votre écoute et avons à cœur de vous offrir des services et des produits innovants qui correspondent à vos besoins…” Source: RevenueBase Database · checked Sep 22, 2026
9	Groupe Gruyère Energie	Indirect evidence	Bulle, SwitzerlandHQ checked Sep 22, 2026	201-500	157 contacts →
	Indirect 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 22, 2026
10	St.Galler Stadtwerke	Indirect evidence	St.gallen, SwitzerlandHQ checked Sep 22, 2026	201-500	128 contacts →
	Indirect evidence “Wer sich mit der Zukunft beschäftigt, möchte Klarheit.” Source: RevenueBase Database · checked Sep 22, 2026
11	Elektrizitätswerk Obwalden	Indirect evidence	Kerns, SwitzerlandHQ checked Sep 22, 2026	51-200	61 contacts →
	Indirect evidence “Als Energiedienstleister und öffentlich-rechtliches Unternehmen versorgt das Elektrizitätswerk Obwalden (EWO) seine Kundinnen und Kunden mit nachhaltigem Strom.” Source: RevenueBase Database · checked Sep 22, 2026
12	Sefa Société Electrique DES Forces DE L'aubonne	Indirect evidence	Aubonne, SwitzerlandHQ checked Sep 22, 2026	51-200	59 contacts →
	Indirect evidence “SEFA, Société Electrique des Forces de l'Aubonne, est une entreprise centenaire dont l’activité première est la production, la distribution et la vente d'énergie électrique.” Source: RevenueBase Database · checked Sep 22, 2026
13	SIE SA	Indirect evidence	Renens, SwitzerlandHQ checked Sep 22, 2026	51-200	55 contacts →
	Indirect evidence “SIE SA, société de 100 collaborateurs, est le gestionnaire de réseau de distribution (GRD) acheminant annuellement plus de 350 millions de kilowattheures aux 50 habitants situés…” Source: RevenueBase Database · checked Sep 22, 2026
14	Seic Société Electrique Intercommunale DE LA Côte SA	Indirect evidence	Gland, SwitzerlandHQ checked Sep 22, 2026	51-200	49 contacts →
	Indirect evidence “Fondée en 1899 et basée à Gland, la Société Électrique Intercommunale de la Côte SA (SEIC SA) offre aux particuliers, aux entreprises et aux collectivités publiques de sa région…” Source: RevenueBase Database · checked Sep 22, 2026
15	Enalpin AG	Indirect evidence	Visp, SwitzerlandHQ checked Sep 22, 2026	51-200	46 contacts →
	Indirect evidence “Die enalpin AG mit Sitz in Visp ist ein erfolgreiches, dynamisches Unternehmen mit eigenen Kraftwerksanlagen und Beteiligungen.” Source: RevenueBase Database · checked Sep 22, 2026
16	Società Elettrica Sopracenerina SA SES	Indirect evidence	Locarno, SwitzerlandHQ checked Sep 22, 2026	201-500	43 contacts →
	Indirect evidence “La Società Elettrica Sopracenerina SA (SES) si occupa della produzione e distribuzione di energia elettrica in 42 Comuni ticinesi e in 5 Comuni della Bassa Mesolcina e Calanca.” Source: RevenueBase Database · checked Sep 22, 2026
17	DIE Werke Versorgung Wallisellen AG	Indirect evidence	Wallisellen, SwitzerlandHQ checked Sep 22, 2026	51-200	34 contacts →
	Indirect evidence “Komfortabel leben» lautet unser Slogan.” Source: RevenueBase Database · checked Sep 22, 2026
18	Enbag AG	Indirect evidence	Brig, SwitzerlandHQ checked Sep 22, 2026	11-50	31 contacts →
	Indirect evidence “Wir – die EnBAG (Energie Brig-Aletsch-Goms) – setzen uns tagtäglich dafür ein, dass Sie – unser Kunde – rund um die Uhr sicher mit Strom vesorgt werden.” Source: RevenueBase Database · checked Sep 22, 2026
19	Technischen Betrieben WIL TBW	Indirect evidence	Wil, SwitzerlandHQ checked Sep 22, 2026	51-200	28 contacts →
	Indirect evidence “Mit den Technischen Betrieben Wil (TBW) verfügt die Stadt über ein eigenes Unternehmen, welches sämtliche Bereiche der Versorgung abdeckt.” Source: RevenueBase Database · checked Sep 22, 2026
20	Energie Kreuzlingen	Indirect evidence	Kreuzlingen, SwitzerlandHQ checked Sep 22, 2026	51-200	26 contacts →
	Indirect evidence “Willkommen bei Energie Kreuzlingen – Ihrer verlässlichen Partnerin für Energie und Wasser!” Source: RevenueBase Database · checked Sep 22, 2026
21	Energie Belp AG	Indirect evidence	Belp, SwitzerlandHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “Die Energie Belp AG ist Ihr regionaler Partner für Elektrizität, Wasser, Wärme und Kommunikation.” Source: RevenueBase Database · checked Sep 22, 2026
22	EWD Elektrizitätswerk Davos AG	Indirect evidence	Davos Platz, SwitzerlandHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Die EWD Elektrizitätswerk Davos AG stellt seit über 130 Jahren erfolgreich die Energieversorgung der Gemeinde Davos sicher und versorgt mit über 450 km Kabel- und Freileitungen…” Source: RevenueBase Database · checked Sep 22, 2026
23	EWK Herzogenbuchsee AG	Indirect evidence	Herzogenbuchsee, SwitzerlandHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Die EWK Herzogenbuchsee AG ist ein regional tätiges Energieversorgungsunternehmen in den Bereichen Strom, Gas, Wärme, Wasser und Telekommunikation.” Source: RevenueBase Database · checked Sep 22, 2026
24	Energie Uster	Indirect evidence	Uster, SwitzerlandHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Energie Uster AG bewegt und belebt die Stadt Uster zuverlässig und sicher mit Strom, Gas, Wasser und Wärme.” Source: RevenueBase Database · checked Sep 22, 2026
25	Ofatec SA	Indirect evidence	La Conversion, SwitzerlandHQ checked Sep 22, 2026	11-50	13 contacts →
	Indirect evidence “Ofatec SA existe depuis 35 ans et est actif dans le domaine de l'énergie en proposant des produits et des services pour la sécurisation et fiabilisation de votre réseau électrique.” Source: RevenueBase Database · checked Sep 22, 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: utility power 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 utility power suppliers.
Partial evidence: Its own public description names part of utility power suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility power 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 65 utility power suppliers based in Switzerland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,772 reachable decision-makers.

Free signup · no credit card

View the full list →

Utility power suppliers based in Switzerland at a glance

As of Sep 22, 2026

57.0%Verified-email coverage

74.8Average contacts per company

11-50Median size (employees)

3.1%Largest-city concentration · Lausanne

Sep 22, 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

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 65 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 utility power 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 “utility power 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 utility power 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 utility power 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, 2,772 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 22, 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 utility power 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 utility power suppliers are there based in Switzerland?

RevenueBase identified 65 utility power 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?

Groupe E, headquartered in Granges-Paccot, tops this list with the largest team on record.

Which city has the most utility power suppliers?

Lausanne leads with 2 headquartered companies, followed by Nyon (2) and Zurich (2).

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 2,772 verified decision-maker contacts tracked across these 65 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 65 utility power suppliers based in Switzerland. Start with a free account, no credit card.

Download this list →

Related lists

Utility power suppliers by geography

Browse the directory

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.