Company lists · Data refreshed September 2026

Top 25 Energy consulting firms based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 396 companies tracked

RevenueBase identified 396 energy consulting firms headquartered in Switzerland as of September 2026 and tracks 2,401 professional contacts across them, including 961 with verified work emails and 51 with mobile numbers. Zurich is the largest hub.

This list covers energy consulting firms 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

396Companies

2,401Contacts tracked

961Verified emails

51Mobile numbers

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The 25 largest energy consulting firms based in Switzerland

Ranked by team size

Top 25 of 396 energy consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to energy consulting firms: 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	Fichtner Management Consulting	Partial evidence	Dubendorf, Switzerland	51-200	88 contacts →
	Partial evidence “Transformation, strategy, management and economics – FMC advises companies and investors in the energy and water industry and related sectors.” Source: RevenueBase Database · checked Sep 2, 2026
2	Romande Energie Services SA	Partial evidence	Preverenges, Switzerland	501-1,000	85 contacts →
	Partial evidence “Experts dans le domaine des services énergétiques et de la décarbonisation, les 500 collaborateurs de Romande Energie Services SA, société du Groupe Romande Energie, sont à votre…” Source: RevenueBase Database · checked Sep 2, 2026
3	Tech Building	Indirect evidence	Perly, Switzerland	51-200	83 contacts →
	Indirect evidence “Acteur de référence depuis plus de 25 ans à Genève, TECH BUILDING est une entreprise dont le cœur de métier repose sur la réalisation d’infrastructures énergétiques du bâtiment et…” Source: RevenueBase Database · checked Sep 2, 2026
4	Alpha IC Gmbh	Partial evidence	Zurich, Switzerland	51-200	58 contacts →
	Partial evidence “Die Alpha IC ist ein inhabergeführtes Consultingbüro für das Real Estate Management.” Source: RevenueBase Database · checked Sep 2, 2026
5	Horizonte-Group AG	Strong evidence	Luzern, Switzerland	51-200	57 contacts →
	Strong evidence “Management Consulting für die Energiewirtschaft Wir gestalten die Energiezukunft – mit innovativen Strategien, digitalen Lösungen und partnerschaftlicher Zusammenarbeit.” Source: RevenueBase Database · checked Sep 2, 2026
6	Renera AG	Partial evidence	Basel, Switzerland	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 2, 2026
7	Weinmann-Energies SA	Partial evidence	Neuchatel, Switzerland	51-200	47 contacts →
	Partial evidence “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Source: RevenueBase Database · checked Sep 2, 2026
8	Anex Ingenieure AG	Partial evidence	Basel, Switzerland	51-200	40 contacts →
	Partial evidence “Anex Ingenieure ist ein Beratungs- und Planungsunternehmen für Gebäudetechnik, das ressourcenschonende Energie- und Medienkonzepte für Prozesse, Gebäude und Areale entwickelt.” Source: RevenueBase Database · checked Sep 2, 2026
9	Lemon Consult AG	Strong evidence	Basel, Switzerland	11-50	36 contacts →
	Strong evidence “Lemon Consult is a specialized engineering and consulting office for energy efficiency, sustainability and renewable energies in the area of building and technical systems.” Source: RevenueBase Database · checked Sep 2, 2026
10	Ista Swiss AG	Partial evidence	Oftringen, Switzerland	51-200	34 contacts →
	Partial evidence “Die ista swiss ag ist seit 1973 eine führende Immobiliendienstleisterin in der Schweiz und spezialisiert auf intelligente Lösungen im Energie- und Ressourcenmanagement.” Source: RevenueBase Database · checked Sep 2, 2026
11	Kalt Halbeisen Ingenieurbüro AG	Partial evidence	Zurich, Switzerland	51-200	32 contacts →
	Partial evidence “Wir sind ein erfolgreiches Ingenieur, Planungs- und Beratungsunternehmen im Bereich der Energie- und Gebäudetechnik.” Source: RevenueBase Database · checked Sep 2, 2026
12	SSE Engineering AG	Partial evidence	Ostermundigen, Switzerland	11-50	32 contacts →
	Partial evidence “Wir bieten Bauherren und Architekten Beratung und Planung für professionelle Lösungen in Energie und Automation.” Source: RevenueBase Database · checked Sep 2, 2026
13	Energie-Agentur DER Wirtschaft Agence DE L Énergie Pour L Économie	Partial evidence	Zurich, Switzerland	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 2, 2026
14	Ompex AG	Partial evidence	Zurich, Switzerland	11-50	29 contacts →
	Partial evidence “Ompex ist Ihr Energiedienstleister, Ihr Energieexperte und Ihr Energiewegbereiter.” Source: RevenueBase Database · checked Sep 2, 2026
15	Enastra AG	Partial evidence	Zurich, Switzerland	11-50	25 contacts →
	Partial evidence “Das Vernetzen der Fachgebiete Strategie & Konzept, Bauherrentreuhand, Energiecontrolling und Nebenkosten ist das Fundament unserer Kernkompetenz.” Source: RevenueBase Database · checked Sep 2, 2026
16	Tecnoservice Engineering SA	Indirect evidence	Fribourg, Switzerland	51-200	25 contacts →
	Indirect evidence “TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.” Source: RevenueBase Database · checked Sep 2, 2026
17	Resiq AG	Indirect evidence	Visp, Switzerland	11-50	24 contacts →
	Indirect evidence “RESiQ setzt sich für den erfolgreichen Einsatz von erneuerbaren Ressourcen (RES) ein und ermöglicht durch intelligente technische Lösungen (iQ) deren effiziente und nachhaltige…” Source: RevenueBase Database · checked Sep 2, 2026
18	ID GO Management SA	Indirect evidence	Morges, Switzerland	11-50	23 contacts →
	Indirect evidence “ID GO Management SA est une société de services, alliant des compétences uniques à la croisée de l’énergie, la physique du bâtiment et l’architecture pour mettre en œuvre la…” Source: RevenueBase Database · checked Sep 2, 2026
19	The Meeco Group	Partial evidence	Zug, Switzerland	51-200	23 contacts →
	Partial evidence “As a leader in clean renewable energy, meeco™ has provided clients with services and solutions for over 423 MW across three continents.” Source: RevenueBase Database · checked Sep 2, 2026
20	Ingenieurbüro IEM AG	Partial evidence	Bern, Switzerland	11-50	21 contacts →
	Partial evidence “Wir sind ein national tätiges, anerkanntes Ingenieurbüro für Energie- und Gebäudetechnikplanungen, führend in unseren Kompetenzen und Dienstleistungen.” Source: RevenueBase Database · checked Sep 2, 2026
21	Green Energy Venture AG	Partial evidence	Lyssach, Switzerland	51-200	21 contacts →
	Partial evidence “Green Energy Venture is a leading advisory and services firm which operates along the value chain of renewable energies.” Source: RevenueBase Database · checked Sep 2, 2026
22	SB Technique SA	Indirect evidence	Geneve, Switzerland	11-50	18 contacts →
	Indirect evidence “SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Source: RevenueBase Database · checked Sep 2, 2026
23	Guggisberg Kurz AG	Indirect evidence	Ostermundigen, Switzerland	51-200	18 contacts →
	Indirect evidence “Mit über 90 erfahrene Mitarbeitenden ist die Guggisberg Kurz AG in der Lage sowohl grosse Objekte auszuführen, als auch sehr flexibel zu agieren.” Source: RevenueBase Database · checked Sep 2, 2026
24	Energiebüro AG	Partial evidence	Zurich, Switzerland	11-50	16 contacts →
	Partial evidence “energiebüro ist das Kompetenzzentrum für Solar- und Wasserkraft, Energieeffizienz und Gebäudesysteme.” Source: RevenueBase Database · checked Sep 2, 2026
25	Adolf Krebs AG	Partial evidence	Grund Bei Gstaad, Switzerland	51-200	16 contacts →
	Partial evidence “Aber ebenso viel mit harten Kalkulationen, Energiemanagement, mit Wissen, was zu tun ist.” Source: RevenueBase Database · checked Sep 2, 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 consulting firms. 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 consulting firms.
Partial evidence: Its own public description names part of energy consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy consulting firms. 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 396 energy consulting firms based in Switzerland

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Energy consulting firms based in Switzerland at a glance

As of Sep 2, 2026

40.0%Verified-email coverage

2.1%Mobile-number coverage

6.1Average contacts per company

1-10Median size (employees)

11.4%Largest-city concentration · Zurich

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

280

11-50

51-200

201-500

501-1,000

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 consulting firms, 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 consulting firms”. 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 consulting firms), 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 consulting firms, 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, 961 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 2, 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.

Energy consulting firms by metro

Energy consulting firms in Zurich45

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 consulting firms, 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 consulting firms are there based in Switzerland?

RevenueBase identified 396 energy consulting firms 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?

Fichtner Management Consulting, headquartered in Dubendorf, tops this list with the largest team on record.

Which city has the most energy consulting firms?

Zurich leads with 45 headquartered companies, followed by Lausanne (14) and Geneva (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 961 verified decision-maker contacts tracked across these 396 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 2, 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.