Company lists · Data refreshed September 2026

Top 25 Residential energy efficiency companies based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 96 companies tracked

RevenueBase identified 96 residential energy efficiency companies headquartered in Switzerland as of September 2026 and tracks 391 professional contacts across them, including 178 with verified work emails. Geneve is the largest hub.

This list covers residential energy efficiency 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 17, 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 17, 2026 86% judged on-target in blind review

96Companies

391Contacts tracked

178Verified emails

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The 25 largest residential energy efficiency companies based in Switzerland

Ranked by team size

Top 25 of 96 residential energy efficiency companies based in Switzerland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to residential energy efficiency 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	Primeo Energie AG	Indirect evidence	Münchenstein, SwitzerlandHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “Wir entwickeln smarte Lösungen für das Leben zu Hause und im Büro.” Source: RevenueBase Database · checked Sep 17, 2026
2	Energie-Agentur DER Wirtschaft Agence DE L Énergie Pour L Économie	Partial evidence	Zürich, SwitzerlandHQ checked Sep 17, 2026	51-200	31 contacts →
	Partial evidence “Seit 2001 bieten wir unseren Teilnehmern unter der Einhaltung von Energieträger- und Produkteneutralität einen Rund-um-Service im Energie-Management mit bewährten und von Behörden…” Source: RevenueBase Database · checked Sep 17, 2026
3	Ecco2 Solutions AG	Strong evidence	Givisiez, SwitzerlandHQ checked Sep 17, 2026	11-50	26 contacts →
	Strong evidence “ECCO2 Solutions AG offers innovative services for energy efficiency in buildings.” Source: RevenueBase Database · checked Sep 17, 2026
4	Gestical SA	Strong evidence	Cadempino, SwitzerlandHQ checked Sep 17, 2026	11-50	15 contacts →
	Strong evidence “Your partner for energy saving in Switzerland With our energy services, we ensure efficient management of heating, air conditioning, water and electricity consumption, and do so…” Source: RevenueBase Database · checked Sep 17, 2026
5	Home Intelligence Sàrl	Indirect evidence	Lonay, SwitzerlandHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence “Spécialiste en optimisation énergétique!” Source: RevenueBase Database · checked Sep 17, 2026
6	E-Nno Switzerland SA	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “E-nno développe et propose des solutions d’optimisation et de suivi énergétique pour les professionnels de l’immobilier et de la construction.” Source: RevenueBase Database · checked Sep 17, 2026
7	DM Energieberatung AG	Partial evidence	Brugg, SwitzerlandHQ checked Sep 17, 2026	11-50	11 contacts →
	Partial evidence “DM Energieberatung AG is a renewables & environment company based out of Paradiesstrasse 5, Brugg, Aargau, Switzerland.” Source: RevenueBase Database · checked Sep 17, 2026
8	YORD	Indirect evidence	Fribourg, SwitzerlandHQ checked Sep 17, 2026	1-10	10 contacts →
	Indirect evidence “Jusqu’à 40% d’économies pour votre chauffage YORD vous accompagne dans la réduction et le monitoring de la consommation énergétique des chauffages pour tous les types de bâtiments.” Source: RevenueBase Database · checked Sep 17, 2026
9	Enerbat SA	Partial evidence	Genève, SwitzerlandHQ checked Sep 17, 2026	1-10	9 contacts →
	Partial evidence “EnerBat assure la gestion énergétique globale du bâtiment.” Source: RevenueBase Database · checked Sep 17, 2026
10	Voltis Energies	Partial evidence	Villars-sur-glâne, SwitzerlandHQ checked Sep 17, 2026	51-200	9 contacts →
	Partial evidence “Voici les principaux types de prestations que Voltis Energies peut vous offrir : 1.” Source: RevenueBase Database · checked Sep 17, 2026
11	I.On Energy Services	Partial evidence	Rolle, SwitzerlandHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial evidence “I.ON Energy vous accompagne dans vos projets pour simplifier votre transition énergétique et améliorer votre production d'énergie.” Source: RevenueBase Database · checked Sep 17, 2026
12	OXOIA	Partial evidence	Baden, SwitzerlandHQ checked Sep 17, 2026	1-10	9 contacts →
	Partial evidence “Oxoia minimizes the energy expenses of a building.” Source: RevenueBase Database · checked Sep 17, 2026
13	Gowatt	Indirect evidence	Vuiteboeuf, SwitzerlandHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “Nous offrons une gamme complète de produits et services pour répondre à vos besoins en matière d'énergie solaire et d'efficacité énergétique.” Source: RevenueBase Database · checked Sep 17, 2026
14	Local Energy SA Régie Énergétique	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “Etablie à Lausanne, l’entreprise Local Energy est une solution sur mesure et sans risque pour les propriétaires souhaitant optimiser la consommation de leurs bâtiments tout en…” Source: RevenueBase Database · checked Sep 17, 2026
15	Franconi Grob AG	Partial evidence	Biel/bienne, SwitzerlandHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Ihr Spezialist für Haus- und Energietechnik” Source: RevenueBase Database · checked Sep 17, 2026
16	Elfero AG	Indirect evidence	Meisterschwanden, SwitzerlandHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “elfero AG is a renewables & environment company based out of Lindenmattstrasse 9, Meisterschwanden, Canton of Aargau, Switzerland.” Source: RevenueBase Database · checked Sep 17, 2026
17	Soleco AG	Partial evidence	Maur (zh), SwitzerlandHQ checked Sep 17, 2026	1-10	7 contacts →
	Partial evidence “Soleco Optimizer, the intelligent energy optimizer for private and multi-apartment buildings.” Source: RevenueBase Database · checked Sep 17, 2026
18	Her-Immo	Indirect evidence	Bern, SwitzerlandHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Plusenergie Immobilien.” Source: RevenueBase Database · checked Sep 17, 2026
19	Ecoenergy Swiss AG	Partial evidence	Volketswil, SwitzerlandHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “Ob Sie nun auf erneuerbare Energien umsteigen, Ihre Öl- oder Gasheizung durch eine moderne, energieeffiziente Anlage ersetzen oder den Wirkungsgrad Ihrer bestehenden Heizung…” Source: RevenueBase Database · checked Sep 17, 2026
20	Iso-Bau AG	Partial evidence	Bern, SwitzerlandHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Die Iso-Bau AG ist für Sie der optimale Partner bei energieoptimierenden Gebäudeprojekten.” Source: RevenueBase Database · checked Sep 17, 2026
21	Froglux AG	Indirect evidence	Reinach, SwitzerlandHQ checked Sep 17, 2026	11-50	4 contacts →
	Indirect evidence “Willkommen bei FrogLux AG – Ihr lokaler Spezialist in Elektro- und Solartechnik!” Source: RevenueBase Database · checked Sep 17, 2026
22	E H Ingenieurbüro FÜR Energie Haustechnik AG	Partial evidence	Schaffhausen, SwitzerlandHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “Energieeffizienz, erneuerbare Energien und Komfort sind unsere Kernkompetenzen.” Source: RevenueBase Database · checked Sep 17, 2026
23	Soltark	Partial evidence	Bubikon, SwitzerlandHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “Unter dem Motto «Autark durch Solar» arbeitet Soltark daran, mehr Unabhängigkeit und Freiheit in der Energieversorgung zu ermöglichen.” Source: RevenueBase Database · checked Sep 17, 2026
24	Helvetia Energy	Indirect evidence	Genève, SwitzerlandHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Notre engagement est de vous offrir l'excellence en matière d'analyse et d'optimisation des coûts énergétiques dans le respect du développement durable et responsable.” Source: RevenueBase Database · checked Sep 17, 2026
25	J.Clever Energia Intelligente PER IL Ticino	Partial evidence	Quartino, SwitzerlandHQ checked Sep 17, 2026	1-10	3 contacts →
	Partial evidence “Hai mai pensato di produrre in modo indipendente l’energia per la tua casa o azienda?” Source: RevenueBase Database · checked Sep 17, 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: residential energy efficiency 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 residential energy efficiency companies.
Partial evidence: Its own public description names part of residential energy efficiency companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential energy efficiency 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 96 residential energy efficiency companies based in Switzerland

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Residential energy efficiency companies based in Switzerland at a glance

As of Sep 17, 2026

45.5%Verified-email coverage

4.1Average contacts per company

1-10Median size (employees)

5.2%Largest-city concentration · Geneve

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 96 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 residential energy efficiency 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 “residential energy efficiency 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 residential energy efficiency 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 residential energy efficiency 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, 178 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 17, 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 residential energy efficiency 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 residential energy efficiency companies are there based in Switzerland?

RevenueBase identified 96 residential energy efficiency 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?

Primeo Energie AG, headquartered in Munchenstein, tops this list with the largest team on record.

Which city has the most residential energy efficiency companies?

Geneve leads with 5 headquartered companies, followed by Zurich (4) and Bern (3).

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 178 verified decision-maker contacts tracked across these 96 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 17, 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.