3'202 companies found
nextE Holding AG
Meggen · Since 2021
nextE Holding AG is a European independent power producer (IPP) focused on large-scale deployment of renewable energy infrastructure and carbon-neutral Energy-as-a-Service models. The company provides Energy-as-a-Service products and services including on-site and off-site renewable electricity generation, energy infrastructure development and asset management with commercial services such as power purchase agreements.
Nik Häne Fachlösungen für Heizungen und sanitäre Anlagen
Dinhard · Since 2012
The core activity of Nik Häne includes the planning, installation, maintenance and repair of heating and sanitary systems, including solar and boiler services. The company also offers chemical descaling and sanitary repairs.
Nomali Suisse SA
Grand-Lancy · Since 1985
Nomali Suisse SA is a building‑sector company providing consulting, installation and maintenance services for lighting, signage and energy systems. Its offerings include illuminated signage and storefront graphics, and the G‑EauSolAir division supplies heat pumps, photovoltaic and thermal solar systems, batteries and thermodynamic water heaters.
Norian AG
Altendorf · Since 2018
The core activity of Norian AG is the sale of photovoltaic modules and related hardware, as well as consulting and supporting private and business customers in the planning and implementation of photovoltaic systems.
NOROVA Sàrl
Echallens · Since 2024
The core activity of Norova is the installation of photovoltaic systems and the performance of energy analyses. Specifically, the company offers the following services: Installation of photovoltaic systems, Consulting and analysis of energy needs, Performance of energy analyses. The company positions itself as a partner for sustainable and efficient energy supply through solar energy.
NRbard, s.r.o., Bardejov, Zweigniederlassung Baar
Baar · Since 2023
Oehrli Dach Fassade Solaranlage
Adelboden · Since 2014
The core activity of Oehrli Dach Fassade Solar is the execution of work in the field of building envelope, particularly in roofing, facade work and the installation of solar energy systems.
Oesch & Weber AG
Embrach · Since 2020
The core activity of Oesch & Weber AG encompasses the provision of services and solutions in the following areas: * Roofing services (pitched roof, flat roof, roof renovation, roof maintenance, roof windows) * Chimney construction and cleaning (chimney systems, chimney covering, stove installation) * Solar systems (photovoltaics, solar thermal energy) * Ventilation cleaning The company offers comprehensive solutions for the maintenance and expansion of roofs, chimneys and solar systems, as well as for the cleaning of ventilation systems.
Ohm Elektro Solar GmbH
Jona · Since 2022
The core activity of Ohm-elektro is the planning, installation and maintenance of photovoltaic systems, as well as the performance of electrical inspections and the provision of service offerings in the field of electrical engineering.
ÖkoFEN-Schweiz GmbH
Willisau · Since 2008
The core activity of ÖkoFEN is the development and production of pellet heating systems and air-water heat pumps, i.e. renewable heating solutions.
Omneo AG
Dübendorf · Since 2020
The core activity of Omneo AG is the planning, implementation and maintenance of heating, photovoltaic and electromobility solutions for buildings, particularly in the field of renewable energies. This includes consulting, planning and implementation of projects in the areas of heating replacement, photovoltaic systems, heat pump systems and electromobility solutions.
omniEnergie gmbh
Stäfa · Since 2022
The core activity of omniEnergie gmbh is the planning, consulting and implementation of efficient energy technology solutions, particularly in the field of renewable energies, building technology, solar systems and e-mobility. This specifically includes: Energy consulting and planning, planning and installation of photovoltaic systems and heating systems, simulation of energy systems, e-mobility and battery storage solutions, heating replacement and optimization, thermal insulation and building technology. The company also offers impulse consulting and certified energy consulting for SMEs and commercial enterprises.
OmniWatt AG
Baar · Since 2023
The core activity of OmniWatt AG is the planning, implementation and maintenance of large-scale solar power plants.
onewallfree AG
Ruswil · Since 2021
onewallfree AG connects solar power producers and consumers through a marketplace for ZEV, vZEV and local electricity communities. It provides consulting, network-topology checks, metering-data management, billing and debt-collection services to set up and operate these self-consumption arrangements.
OptimalGo SA
Chavannes-De-Bogis · Since 1945
The core activity of OptimalWay/OptimalGo is the planning, development and installation of systems for autonomous energy generation, particularly through the use of renewable energies such as solar, geothermal and wind energy. The company offers solutions for capturing and optimizing these energies to make buildings and facilities independent of external energy sources.
OptimaSolar Freiamt Genossenschaft
Benzenschwil · Since 1991
The core activity of OptimaSolar Freiamt Genossenschaft is the production and distribution of solar power and other renewable energies. The company operates photovoltaic systems and hydroelectric power plants to generate electricity, which it supplies to private individuals and companies. In addition, the company also offers services such as certificates of origin and pooling for the self-consumption of solar power.
OptimaSolar Züri Unterland Genossenschaft
Niederweningen · Since 2022
The core activity of OptimaSolar Züri Unterland is the planning, construction and operation of photovoltaic systems, particularly on the roofs of larger residential and commercial buildings, schools and public buildings, with the aim of producing solar power and contributing to the acceleration of the energy transition.
Optimum Swiss Solar Sàrl
Delémont · Since 2020
Ourpower GmbH
Dübendorf · Since 2017
The core activity of OurPower is the planning, construction and operation of photovoltaic systems (solar power plants) in Switzerland. Private investors can participate in these systems by purchasing solar modules and thus investing in the production of solar energy. OurPower takes care of the infrastructure costs, construction and operation of the systems, while investors receive the returns from the production of their solar modules on a monthly basis.
Ovenstone Engineering GmbH
Winterthur · Since 2019
The core activity of Ovenstone Engineering GmbH is the planning, consulting and implementation of renewable energy solutions, particularly photovoltaic systems, as well as the development and implementation of smart metering systems for energy management.
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Source: Federal Statistical Office, UID register