Energy technology in the
Canton of Aargau

83 companies in Energy technology based in the Canton of Aargau — name and year of registration from the commercial register.

Companies

50 of 83 companies

Brugg Kabel AG Logo

Brugg Kabel AG

Since 1991 · 101–500 empl.4.2(23)

Brugg Cables develops, manufactures, installs and maintains cables, accessories and system solutions for energy transmission and distribution as well as for industrial system solutions.

Energy technologyHigh-voltage cable systemsAsset Management & ServicesResearch and development
ranQ Trust Score 4.4 out of 5.0, rated Very high, Rank #1
Brugg Kabel Manufacturing AG Logo

Brugg Kabel Manufacturing AG

Since 2021 · 101–500 empl.4.2(23)

Brugg Kabel Manufacturing AG manufactures power and industrial cables and cable accessories, providing development, production, turnkey project delivery and service solutions for high-, medium- and low-voltage networks.

Energy technologyHigh-voltage cable systemsHigh-voltage accessoriesMedium- and low-voltage cable systems
ranQ Trust Score 4.3 out of 5.0, rated Very high, Rank #2
Ansaldo Energia Switzerland AG Logo

Ansaldo Energia Switzerland AG

Since 2000 · 51–100 empl.4.3(12)

The core activity of Ansaldo Energia is the planning, development, delivery and commissioning of power plants, including simple and combined cycle power plants, geothermal power plants and the rehabilitation of existing power plants. The company also provides services such as engineering, project management, procurement, construction and commissioning of power plants. Additionally, Ansaldo Energia is active in training and knowledge transfer in the field of power generation.

Energy technologyPower plantsEquipmentService
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #3
ABB Schweiz AG Logo

ABB Schweiz AG

Since 1990 · 21–50 empl.4.3(27)

ABB is a leading technology company in the fields of electrification and automation, enabling a more sustainable and resource-efficient future. The company's core activities include the development and provision of products, services, and solutions for industry, particularly in the areas of: electrification and automation of processes in various sectors such as energy, oil and gas, chemicals, metallurgy, mining, and transportation; provision of energy and automation solutions for data centers, buildings, and infrastructure; development of robotics and machine automation solutions for industry; provision of measurement and analysis products for industrial operations; and development of solutions for process optimization and efficiency improvement in various sectors. Overall, the company focuses on developing technologies and solutions that improve the efficiency, productivity, and sustainability of industrial processes.

Energy technologyProducts and SystemsServiceIndustry Solutions
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #4
Arnold AG Logo

Arnold AG

Since 2014 · 21–50 empl.4.3(12)

Arnold AG is a network construction company providing services in the energy, telecom, transport and water sectors. Its work includes planning, construction and commissioning of installations, cable and overhead-line works, maintenance, fault repair and a 24/7 emergency service.

Energy technologyNetwork constructionEnergyTelecom
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #5
naturenergie holding AG Logo

naturenergie holding AG

Since 1908 · 101–500 empl.

naturenergie holding AG is the holding company of an energy supply and solutions group. The group generates energy from renewable sources, including hydropower and solar power, and operates in energy infrastructure and services related to electricity, heating and mobility.

Energy technologyCustomer-oriented energy solutionsEnergy generationInfrastructure
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #6
Limmatkraftwerke AG Logo

Limmatkraftwerke AG

Since 1908 · 21–50 empl.

Limmatkraftwerke AG operates six hydroelectric power plants that produce renewable electricity for the Baden region. The facilities use the water power of the Limmat.

Energy technologyHydropower electricityBoat crossing
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #7
Stavolt AG Logo

Stavolt AG

Since 1978 · 1–10 empl.

Stavolt AG develops mobile units for decentralised processing of biomass and sorted plastics. Its pilot project tests the production of biochar and nutrient material, as well as the conversion of PE/PP plastics into oil and gas.

Energy technologyDevelopment of mobile chemical recycling plantsPyrolysis of plastic wasteProcessing of biogenic waste
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #8
IBW Technik AG Logo

IBW Technik AG

Since 2001 · 21–50 empl.

IBW Technik AG provides electricity, gas and water supply services and related technical services such as network connections, installation inspections, public lighting, leak detection and geoinformation. Its services also include energy consulting, heat contracting (Wärme‑Contracting), installation solutions (including PV systems and e‑mobility) and a 24‑hour emergency service.

Energy technologyEnergy consultingGeographic informationHeat contracting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #9
Enlog AG Logo

Enlog AG

Since 2002 · 1–10 empl.

Enlog AG specializes in recovering energy from wood from landscape maintenance, tree work and other sources. Its services include collecting and shredding wood, tree work, transport and supplying wood chips for thermal use in heating plants.

Energy technologyEnergy recovery of woodGarden wood chippingTransport services
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #10
MGC Moser-Glaser AG Logo

MGC Moser-Glaser AG

Since 2005 · 101–500 empl.

MGC Moser-Glaser AG is a manufacturer of busbar systems and transformer and wall bushings focused on resin-impregnated paper (RIP) insulation marketed under the DURESCA® brand. The company produces its products in dedicated facilities and provides installation, technical support and testing services; it holds SN EN ISO 9001:2015, 14001:2015 and 45001:2018 certifications.

Energy technologyBusbar systemsFeedthroughsHigh-voltage testing solutions
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #11
CPS Creative Power Solutions AG Logo

CPS Creative Power Solutions AG

Since 2005 · 1–10 empl.

The core activity of Creative Power Solutions (CPS) is the development and provision of customized technology solutions for power generation, particularly for optimizing power plant performance, operation and maintenance. This includes the development of products for turbomachinery and steam boilers, improving efficiency and reducing emissions, as well as providing engineering services for power generation.

Energy technologyProduct DevelopmentAdvisory ServicesPerformance Improvements
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #12
Blue-Water-Power AG Logo

Blue-Water-Power AG

Since 2006 · 11–20 empl.

Blue-Water-Power AG develops products and solutions that harness the energy potential of drinking water and wastewater for electricity generation and heat use. For market and project handling of new initiatives the company refers enquiries to the firm Häny AG.

EngineerEnergy from Drinking and Wastewater
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #13
Hydrelec GmbH Logo

Hydrelec GmbH

Since 2009 · 1–10 empl.

Hydrelec GmbH provides services in hydropower and renewable energy. Its core activities include consulting, project engineering and realization, as well as the planning, construction and refurbishment of hydropower plants.

EngineerConsultingProject engineeringImplementation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #14
Axpo Grid AG Logo

Axpo Grid AG

Since 2012 · 101–500 empl.

Axpo Grid AG is part of the Axpo Group and provides energy solutions for business customers. Its activities include electricity and gas supply, energy trading, PPAs, solar energy, and services related to flexibility marketing, hedging and guarantees of origin.

Energy technologyGrids & grid servicesGrid Market SolutionsOperation and maintenance
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #15
Energiedienst Holding GmbH Logo

Energiedienst Holding GmbH

Since 2015 · 101–500 empl.

Energiedienst Holding GmbH is the holding company of the naturenergie group that coordinates group-wide efforts to provide climate-friendly energy solutions. Its activities include renewable power generation (hydropower, photovoltaics, hydrogen), energy infrastructure and customer-facing energy products, and it serves as a contact point for investors and the press.

Energy technologyCustomer-focused energy solutionsSystem-relevant infrastructureRenewable energy generation
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #16
Axpo Kleinwasserkraft AG Logo

Axpo Kleinwasserkraft AG

Since 2015 · 11–20 empl.

Axpo Kleinwasserkraft AG is part of the Axpo Group and focuses on electricity generation and the operation of hydropower plants in Switzerland. The company provides services related to run-of-river, storage and pumped-storage plants, including construction, operation and maintenance.

Energy technologyHydropowerOperation and services of hydropower plantsDigital hydropower plants
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #17
Axpo Biomasse AG Logo

Axpo Biomasse AG

Since 2015 · 51–100 empl.

Axpo Biomasse AG operates biogas plants, composting sites and wood-energy facilities, and provides mobile services for green-waste processing and bio‑waste recycling. According to the company's website, it runs 15 biogas plants, six composting sites and the Tegra wood-fired power plant and offers services to process bio‑waste for customers.

Energy technologyRenewable energy from biogenic wasteBiomass servicesProducts for garden and agriculture
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #18
FieldCore Service Solutions GmbH Logo

FieldCore Service Solutions GmbH

Since 2015 · 1–10 empl.

FieldCore Service Solutions GmbH provides industrial field services for the power generation sector. Its work includes maintaining and upgrading power generation equipment, with on-site teams and digital service solutions for equipment from multiple manufacturers.

Energy technologyField ServicesTotal Plant SolutionsField Engineering
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #19
HAVECO AG Logo

HAVECO AG

Since 2016 · 101–500 empl.

HAVECO AG provides services and products for electricity utilities, infrastructure operators, industry and public authorities. Its offerings include engineering services, proprietary products and the integration of selected third‑party products, covering project planning through commissioning, as well as system solutions, energy plant construction, project engineering and network construction. The company holds SN EN ISO 9001:2015, 14001:2015 and SN EN ISO 45001:2018 certifications.

Energy technologySystem solutionsEnergy plant constructionPlanning - Project engineering
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #20
Sprecher Automation Schweiz AG Logo

Sprecher Automation Schweiz AG

Since 2016 · 21–50 empl.

Sprecher Automation Schweiz AG markets products and solutions for energy supply and process automation. Its offerings include switchgear and systems for substation and grid control, grid protection and remote control for applications in energy, industry and infrastructure.

Electronics manufacturerProducts for Energy SupplySolutions for Energy SupplySolutions for Industrial Facilities
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #21
Axpo Hydro AG Logo

Axpo Hydro AG

Since 2017 · 101–500 empl.

Axpo Hydro AG is part of the Axpo Group and operates in electricity generation and energy supply. The company focuses in particular on hydropower as part of Axpo’s renewable energy portfolio.

Energy technologyHydropowerConstruction, operation and maintenance of power plantsDigital hydropower plants
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #22
SS&A Power Development AG Logo

SS&A Power Development AG

Since 2017 · 11–20 empl.

SS&A Power Development AG develops projects for sustainable power generation and energy storage. It assesses new ideas and markets and has advanced projects involving thermal energy storage and solar energy development.

Energy technologyDevelopment of energy projectsDevelopment of energy storage systemsDevelopment of Gas-to-Power projects
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #23
Alphasynt GmbH Logo

Alphasynt GmbH

Since 2020 · 11–20 empl.

Alphasynt GmbH provides engineering services and plant solutions for Power-to-X processes. Its services range from feasibility studies and process design to the planning, manufacture and commissioning of turnkey plants that produce renewable energy carriers such as methane.

Energy technologyPower-to-X servicesCoMeth methanisation systemsPower-to-Gas solutions
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #24
Framatome AG Logo

Framatome AG

Since 2024 · 11–20 empl.

Framatome AG designs, manufactures and services the nuclear steam supply system (NSSS) and supplies equipment, services and fuel for nuclear power plants. Its portfolio covers design and engineering, component manufacturing, services and maintenance, instrumentation & control, digital solutions and fuel production.

Energy technologyDesign and Service EngineeringComponent ManufacturingServices and maintenance
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #25
Volante-Swiss GmbH Logo

Volante-Swiss GmbH

Since 2021 · 1–10 empl.

Volante-Swiss GmbH is the Swiss subsidiary of Volante International B.V. and operates in the power and chemical industries. It provides consulting and engineering for renewable energy, complex energy systems and infrastructure projects, and develops and supplies energy solutions.

EngineerConsulting for Energy and Infrastructure ProjectsEngineering for Energy SystemsDevelopment of Proprietary Energy Solutions
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #26
Crosstown H2R AG Logo

Crosstown H2R AG

Since 2022 · 11–20 empl.

The core activity of Crosstown H2R is the development and implementation of solutions for decarbonization and the use of hydrogen as a fuel, particularly in the field of gas turbines and power plant construction. The company offers products and services aimed at reducing environmental impact through the use of fossil fuels and promoting sustainable energy supply.

Energy technologyH2R® burner technologyRetrofitting of gas turbinesLicensing, co-development and white-label for OEMs
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #27
e-fuels2go AG Logo

e-fuels2go AG

Since 2020 · 1–10 empl.

e-fuels2go AG trades in e-fuels and markets their environmental attributes, including CO₂ emissions certificates. It develops and sources specific e-fuels such as e-kerosene, e-diesel and e-gasoline, and provides logistics and distribution solutions.

Energy technologyTrading in e-fuelsUpgrading of e-fuelsOfftake agreements for e-methanol
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #28
Beetron SA Logo

Beetron SA

Since 2021 · 1–10 empl.

Beetron SA develops free-piston generators for decentralized power generation. Its technology is designed to run on various liquid and gaseous fuels and serves applications including off-grid power, telecom infrastructure and mobile power; the company also pursues licensing and OEM partnerships.

Energy technologyFree-Piston Linear GeneratorHybrid Power SolutionsPower for Microgrids
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #29
Kompaktwasser GmbH Logo

Kompaktwasser GmbH

Since 2022 · 11–20 empl.

Kompaktwasser GmbH develops and implements modular, compact hydropower plants for generating electricity from low-head watercourses. The company designs and installs systems in various sizes for both grid-connected and off-grid use.

Energy technologyCompact hydropower plantsOff-grid electrification solutionsPlanning, design engineering and installation of hydropower plants
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #30
Oxoia AG Logo

Oxoia AG

Since 2020 · 1–10 empl.

Oxoia AG develops AI-based solutions for building operations optimization. Its platform analyzes data from building systems, weather and IoT sources, then recommends optimization measures or implements them automatically.

Energy technologyAI-supported operations optimizationOxoia RECOMMENDOxoia AUTOMATE
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #31
Acrona Services AG Logo

Acrona Services AG

Since 2014 · 1–10 empl.4.5(4)

The core activity of Acrona Services AG is the sales and service partnership for Capstone Green Energy microturbines, particularly in Switzerland and at landfill sites in Germany. This also includes the planning, commissioning, maintenance and servicing of combined heat and power (CHP) systems throughout their entire lifespan.

Machine repairMicro Gas TurbinesGas Conditioning Systems
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #32
ESV GmbH Logo

ESV GmbH

Since 2023 · 1–10 empl.5.0(4)

ESV GmbH develops, manufactures and installs products and systems for geothermal probes. Its activities include making probe manifolds and distribution chambers, connecting and extending geothermal probes, trading in the required materials, and carrying out well and pipeline construction work.

Energy technologyGround heat systemsInstallation and pipeworkWell construction
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #33
n-protec ag Logo

n-protec ag

Since 2013 · 11–20 empl.3.0(1)

The company's core activity is in the field of energy technology, specifically in the development, procurement, project management, data management and maintenance of steam and gas turbines for power plants, combined heat and power plants and waste incineration plants. The company offers comprehensive services, including inspections, revisions, repairs, troubleshooting, commissioning, decommissioning and dismantling of turbines and other mechanical systems.

Energy technologyTurbine Service & EngineeringMaintenance and repair of steam and gas turbinesReverse engineering and new design of turbine components
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #34
Iron Energy AG Logo

Iron Energy AG

Since 2024 · 1–10 empl.

Iron Energy AG develops and builds stationary, long-duration energy storage systems. Its technology stores electricity seasonally in an iron-based medium and can deliver it on demand as electricity and heat.

Energy technologyLong-duration energy storage systemsIron-air battery systemsPlanning and implementation of energy storage projects
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #35
Volvezia GmbH Logo

Volvezia GmbH

Since 2024 · 1–10 empl.

Volvezia GmbH develops and markets the vertical W1 wind turbine, a compact unit (1×1 m, roughly 2 m high) with an indicated output of up to 3 kW/h. The turbine is described as low-noise, suitable for placement near buildings, can be combined with photovoltaic systems, and the company offers site testing (windlogger).

Energy technologyWeb Server Default Page
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #36
energie elf GmbH Logo

energie elf GmbH

Since 2024 · 1–10 empl.5.0(1)

energie elf GmbH advises businesses, network operators and energy suppliers on energy and digital infrastructure. Its services include planning and project support for electricity networks and smart metering, fibre-optic networks, and IT infrastructure for SMEs.

Energy technologyPower grid expansion and energyFibre-optic networksIT concept
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #37
eneco AG Logo

eneco AG

Since 1968 · 1–10 empl.

eneco AG is a real estate company that provides services in renewable energy and offers commercial property rentals.

Energy technologyServices in the renewable energy sectorCommercial space rental
No score yet
TurbX AG Logo

TurbX AG

Since 2019 · 1–10 empl.

TurbX AG distributes expansion turbines for natural gas utilities’ pressure-reducing and measuring stations. The systems use a heat pump to warm the gas and generate electricity during pressure reduction; TurbX AG is a distribution partner for C2 Technology expansion turbines.

Energy technologyExpansion turbines
No score yet
XGas Swiss GmbH Logo

XGas Swiss GmbH

Since 2022 · 1–10 empl.

XGas Swiss GmbH manages development activities for the XGas technology that produces hydrogen via methane pyrolysis and generates solid nano carbon. The process converts natural gas into so-called “turquoise” hydrogen and solid nano carbon without direct CO₂ emissions and without catalysts, and the company collaborates with Plustherm Point AG on development work.

Energy technologyTechnology for hydrogen and nano-carbon productionReactor development and pilotingInvestor outreach and capital raising
No score yet
SIPENCO GmbH Logo

SIPENCO GmbH

Since 2002 · 1–10 empl.

Engineer
No score yet
Thermo Shield (Schweiz) GmbH Logo

Thermo Shield (Schweiz) GmbH

Since 2011 · 1–10 empl.

Energy technology
No score yet
mein-brennholz.ch GmbH Logo

mein-brennholz.ch GmbH

Since 2016 · 1–10 empl.

Energy technology
No score yet
AG

Aabach Genossenschaft

Since 1967 · 1–10 empl.

Energy technology
No score yet
BA

Bioriko AG

Since 1977 · 1–10 empl.

Energy technology
No score yet
FV

Fenergy von Felten

Since 1993 · 1–10 empl.

Energy technology
No score yet
MA

Mamaka AG

Since 1996 · 1–10 empl.

Energy technology
No score yet
EA

ETRANS AG

Since 2000 · 1–10 empl.

Energy technology
No score yet
SA

SIRAX-Energy AG

Since 2004 · 1–10 empl.

Energy technology
No score yet
CA

COMOX AG

Since 2006 · 1–10 empl.

Energy technology
No score yet

Energy technology in the Canton of Aargau

83Energy technologyCommercial register (Zefix) · as of November 6, 2026
2017Median year of registrationCommercial register (Zefix) · as of November 6, 2026
83in the Canton of AargauCommercial register (Zefix) · as of November 6, 2026
1,483in SwitzerlandCommercial register (Zefix) · as of November 6, 2026
Locations

Energy technology in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of November 6, 2026

Largest places

Baden16Brugg AG5