Energy Industry in the
Canton of St. Gallen

48 companies in Energy Industry based in the Canton of St. Gallen — name and year of registration from the commercial register. The list below shows them all.

Companies

All 48 companies in the Canton of St. Gallen

iNET ENERGETIX AG

Since 1983

Solar energy projectsTechnical services for solar projectsFinancial services for solar projects

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ETS Energie-Technik-Systeme AG

Since 1991

Heat exchangersSterile heat exchangersShell-and-tube heat exchangers

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Heller AG Kälte-Energie-Technik

Since 1993

Commercial refrigerationIndustrial refrigerationVehicle cooling

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Bion Bauhaus AG

Since 1994

Heat pumpsWood energySolar systems

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ELCOTHERM AG

Since 1996

Heat pumpsGas heating systemsOil heating systems

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Entegra Wasserkraft AG

Since 1999

Planning and construction of hydropower plantsRenovation of hydropower plants under the Water Protection ActBusiness and operations management

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HSK AG Kälte-, Klima- und Energietechnik

Since 2001

Refrigeration technologyServiceProducts

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Glattstrom Buchholz AG

Since 2004

Management and operations management mandate for the small hydropower plant Buchholz

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NRG A AG

Since 2006

District heatingHeat and energy contractingWaste heat utilization

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NRG B AG

Since 2007

District heatingSolar energyHeat and energy contracting

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Kraftwerk Stadtbrücke AG

Since 2011

Electricity generation

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SN Erneuerbare Energie AG

Since 2012

Electricity market monitorElectricity portfolio managementHKN portfolio management

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Ventus Energy GmbH

Since 2012

Renewable energy project developmentProject finance for energy infrastructureDirect loans to energy projects

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Troyer Suisse AG

Since 2012

Complete solutionsTurbinesControl & automation

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Natpower International AG

Since 2013

Hydro Electricity StorageAdvanced Renewable Energy System (ARES)Project Development, Financing, Implementation and Operation

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Sysbo AG

Since 2015

Indirect district heating transfer stationDirect district heating transfer stationHot water solutions

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Bilfit Windkraft AG

Since 2015

Leak detectionDryingDisinfection

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Arnold AG

Since 2015

Grid construction in the energy sectorTelecom network constructionGrid construction in the transport sector

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Fortimo Solutions AG

Since 2019

Energy solutions with solar electricityContracting

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Wasserstoffproduktion Ostschweiz AG

Since 2019

Hydrogen productionHydrogen fueling stationsTours of hydrogen production

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Enertrans GmbH

Since 2021

Grid facilitiesLinesAsset Management

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green2energy AG

Since 2021

Biogas Plant and Biomass RecoverySustainable Energy Supply

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SAK onergy AG

Since 2022

Photovoltaic systemsHeat pumpsBattery storage

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separatus AG

Since 2023

Geothermal heating and cooling systemGeothermal system planningPartner matching for geothermal projects

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Kraftwerke Unterterzen AG

Since 1988

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Buschor Fernwärme AG

Since 2013

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CNO Consulting SA

Since 1990

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Genossenschaft Calandablick-Unterrain Bad Ragaz

Since 1990

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Isento Wasserkraft AG

Since 1990

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ERUN GmbH

Since 1996

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Poltera Energie und Automation

Since 1996

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Kleinwasserkraftwerk Mühle AG

Since 2000

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BSW Kraftwerk AG

Since 2002

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Wasserkraftwerk Ebnat AG

Since 2003

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Watt Energie GmbH

Since 2008

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Genossenschaft Fernwärme Mogelsberg

Since 2010

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Vento Verde AG

Since 2011

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FAARLAND AG

Since 2012

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Kraftwerk Berschnerbach AG

Since 2013

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Aklas AG

Since 2014

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Tommasini Energie

Since 2019

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SNL AG

Since 2021

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N2E GmbH

Since 2023

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BK-Sunray GmbH

Since 2023

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SYNTEC POWERFUELS AG

Since 2023

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WOC GROUP AG

Since 2024

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Wärme Netz Ostschweiz Holding AG

Since 2024

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Andreas Kamer

Since 2025

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Energy Industry in the Canton of St. Gallen

48Energy IndustryCommercial register (Zefix) · as of September 27, 2026

2012Median year of registrationCommercial register (Zefix) · as of September 27, 2026

48in the Canton of St. GallenCommercial register (Zefix) · as of September 27, 2026

1,457in SwitzerlandCommercial register (Zefix) · as of September 27, 2026

Locations

Energy Industry in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of September 27, 2026

Largest places

St. Gallen11

Place axis

Other industries in the Canton of St. Gallen

All companies in the Canton of St. Gallen

Property Management2,418 Holding Companies2,058 Management Consulting1,737 Restaurants1,585 Real Estate Project Development1,459 IT Consulting & Services1,275 Real Estate Brokerage1,057 Technical Consulting & Engineering984 Fiduciary Offices984 Auto Repair Shops873 Software Development856 Advertising Agencies824 Automotive & Vehicle Trade785 Coaching & Personal Development741 Facility Management & Cleaning707 Online Shops702 Wholesale - General Specialty Trade677 Architecture Firms664 Painting & Plastering585 Construction & Project Management574 Building Maintenance559 General Contractors543 Mechanical Engineering Industry541 Plumbing & Building Services529 Interior Construction526 Food Processing526 Hair Salons509 Other Service Industries498 Trade Fair & Event Organizers489 Logistics & Transport Companies480 Electrical Planning & Installation438 Timber Construction & Carpentry437 Metal Construction403 Horticulture & Landscaping402 Wholesale - Machinery & Technical Equipment399 Beauty Salons391 Flooring & Tiling389 Retail - Food & Luxury Items386 Building Construction384 Catering373 Retail - General Specialty Trade365 Repair of Machinery & Electronic Devices358 Textile & Clothing Industry351 Continuing Education Institutes348 Retail - Textiles & Clothing344 Recruitment & HR Consulting328 Joinery326 NGOs & NPOs318

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Energy Industry in theCanton of St. Gallen

All 48 companies in the Canton of St. Gallen

Energy Industry in the region

Energy Industry in other places

Other industries in the Canton of St. Gallen

Energy Industry in the
Canton of St. Gallen