Company lists · Data refreshed September 2026

Top 25 Renewable energy consulting firms based in Switzerland

Name: Renewable 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 5, 2026 391 companies tracked

RevenueBase identified 391 renewable energy consulting firms headquartered in Switzerland as of September 2026 and tracks 2,301 professional contacts across them, including 844 with verified work emails and 62 with mobile numbers. Zurich is the largest hub.

This list covers renewable 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

391Companies

2,301Contacts tracked

844Verified emails

62Mobile numbers

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The 25 largest renewable energy consulting firms based in Switzerland

Ranked by team size

Top 25 of 391 renewable energy consulting firms based in Switzerland, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Soltop Energie AGPartial evidence	Elgg, SwitzerlandHQ checked Sep 5, 2026	51-200	84
	“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 5, 2026
2	Thomaslloyd GroupPartial evidence	Stadtkreis 2, SwitzerlandHQ checked Sep 5, 2026	1,001-5,000	62
	“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 5, 2026
3	Soleol SAIndirect evidence	Estavayer-le-lac, SwitzerlandHQ checked Sep 5, 2026	51-200	59
	“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 5, 2026
4	Horizonte-Group AGStrong evidence	Luzern, SwitzerlandHQ checked Sep 5, 2026	51-200	58
	“Management Consulting für die Energiewirtschaft Wir gestalten die Energiezukunft – mit innovativen Strategien, digitalen Lösungen und partnerschaftlicher Zusammenarbeit.” Source: company website · checked Sep 5, 2026
5	Renera AGStrong evidence	Basel, SwitzerlandHQ checked Sep 5, 2026	51-200	54
	“Renera AG (formerly Energie Zukunft Schweiz AG) is a leading force on the road to a fully renewable energy world.” Source: company website · checked Sep 5, 2026
6	Planeco GmbhPartial evidence	Arlesheim, SwitzerlandHQ checked Sep 5, 2026	51-200	50
	“Willkommen bei Planeco GmbH – deiner wegweisenden Partnerin für innovative Energielösungen!” Source: company website · checked Sep 5, 2026
7	Lemon Consult AGStrong evidence	Zürich, SwitzerlandHQ checked Sep 5, 2026	11-50	37
	“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: company website · checked Sep 5, 2026
8	RE CAP Global Investors AGStrong evidence	Zug, SwitzerlandHQ checked Sep 5, 2026	11-50	35
	“re:cap global investors is an independent, internationally-oriented M&A advisor and asset manager for renewable energies.” Source: company website · checked Sep 5, 2026
9	Ampere DynamicPartial evidence	Zurich, SwitzerlandHQ checked Sep 5, 2026	11-50	29
	“Als Experte für nachhaltige und schlüsselfertige Energielösungen im Industrie & Gewerbesektor denken wir Energie ganzheitlich.” Source: company website · checked Sep 5, 2026
10	Emmar SAIndirect evidence	Bulle, SwitzerlandHQ checked Sep 5, 2026	1-10	28
	“Emmar SA est un bureau d’ingénieurs spécialisés dans le domaine de l’électricité, des énergies renouvelables ainsi que des nouvelles technologies.” Source: company website · checked Sep 5, 2026
11	AZ Ingénieurs SAIndirect evidence	Lausanne 10, SwitzerlandHQ checked Sep 5, 2026	11-50	27
	“La marque az ingénieurs regroupe des sociétés privées réunissant des ingénieurs-conseils dans les domaines de l'énergie, de la sécurité et des installations techniques pour le…” Source: company website · checked Sep 5, 2026
12	Durena AGIndirect evidence	Lenzburg, SwitzerlandHQ checked Sep 5, 2026	11-50	26
	“Unserem Ingenieurunternehmen ist es ein grosses Anliegen, individuell und persönlich auf Ihre Wünsche einzugehen.” Source: company website · checked Sep 5, 2026
13	Tecnoservice Engineering SAIndirect evidence	Fribourg, SwitzerlandHQ checked Sep 5, 2026	51-200	26
	“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: company website · checked Sep 5, 2026
14	Enastra AGPartial evidence	Zurich, SwitzerlandHQ checked Sep 5, 2026	11-50	25
	“Das Vernetzen der Fachgebiete Strategie & Konzept, Bauherrentreuhand, Energiecontrolling und Nebenkosten ist das Fundament unserer Kernkompetenz.” Source: company website · checked Sep 5, 2026
15	Weisskopf Partner GmbhPartial evidence	Zürich, SwitzerlandHQ checked Sep 5, 2026	11-50	25
	“Die Steigerung von Energieeffizienz und den Einsatz von erneuerbaren Energien verfolgen wir mit Herzblut.” Source: company website · checked Sep 5, 2026
16	BE Netz AGIndirect evidence	Luzern, SwitzerlandHQ checked Sep 5, 2026	51-200	24
	“Das Unternehmen BE Netz AG ist spezialisiert auf Strom und Wärme aus der Sonne.” Source: company website · checked Sep 5, 2026
17	Suntechnics Fabrisolar AGPartial evidence	Effretikon, SwitzerlandHQ checked Sep 5, 2026	51-200	24
	“Seit über 40 Jahren dreht sich bei SunTechnics Fabrisolar alles um das Thema erneuerbare Energien.” Source: company website · checked Sep 5, 2026
18	Resiq AGIndirect evidence	Burgdorf, SwitzerlandHQ checked Sep 5, 2026	11-50	24
	“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 5, 2026
19	The Meeco GroupStrong evidence	Zug, SwitzerlandHQ checked Sep 5, 2026	51-200	24
	“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 5, 2026
20	Mitrelli EnergyIndirect evidence	Frauenfeld, SwitzerlandHQ checked Sep 5, 2026	11-50	23
	“Power.” Source: company website · checked Sep 5, 2026
21	Ingenieurbüro IEM AGPartial evidence	Thun, SwitzerlandHQ checked Sep 5, 2026	11-50	21
	“Wir sind ein national tätiges, anerkanntes Ingenieurbüro für Energie- und Gebäudetechnikplanungen, führend in unseren Kompetenzen und Dienstleistungen.” Source: company website · checked Sep 5, 2026
22	Axova AGIndirect evidence	Diepflingen, SwitzerlandHQ checked Sep 5, 2026	51-200	20
	“Sonnenlicht in Strom umzuwandeln, ist eine geniale Technik!” Source: company website · checked Sep 5, 2026
23	Green Energy Venture AGStrong evidence	Lyssach, SwitzerlandHQ checked Sep 5, 2026	51-200	20
	“Green Energy Venture is a leading advisory and services firm which operates along the value chain of renewable energies.” Source: company website · checked Sep 5, 2026
24	SB Technique SAIndirect evidence	Genève, SwitzerlandHQ checked Sep 5, 2026	11-50	18
	“SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Source: company website · checked Sep 5, 2026
25	Guggisberg Kurz AGIndirect evidence	Ostermundigen, SwitzerlandHQ checked Sep 5, 2026	51-200	18
	“Mit über 90 erfahrene Mitarbeitenden ist die Guggisberg Kurz AG in der Lage sowohl grosse Objekte auszuführen, als auch sehr flexibel zu agieren.” Source: company website · checked Sep 5, 2026

Showing 25 of 391 renewable energy consulting firms based in Switzerland

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Renewable energy consulting firms based in Switzerland at a glance

As of Sep 5, 2026

1-10Median size (employees)

ZurichLargest hub · 34 HQs

62Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

277

11-50

51-200

201-500

1,001-5,000

10001+

Verified emails by last verification

0–30

783

31–60

61–90

90–180

180+

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 renewable energy consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Switzerland whose own description of what they do matches “renewable energy consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among renewable 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 an evidence 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, 844 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 5, 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.

Renewable energy consulting firms by metro

Renewable energy consulting firms in Zurich34

Frequently asked

How many renewable energy consulting firms are there based in Switzerland?

RevenueBase identified 391 renewable 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?

Soltop Energie AG, headquartered in Elgg, tops this list with the largest team on record.

Which city has the most renewable energy consulting firms?

Zurich leads with 34 headquartered companies, followed by Zug (12) and Geneva (10).

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 844 verified decision-maker contacts tracked across these 391 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 5, 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 SmartSearch, 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.