Companies in
Solar & Photovoltaics

energy unlimited AG

Solar & Photovoltaics · Oberburg · Since 2022

energy unlimited AG designs, installs and maintains photovoltaic systems, solar thermal systems, battery storage and electric vehicle charging stations. The company serves residential, commercial and agricultural customers and provides consultancy on energy management and available subsidies.

Enerphy Suisse AG

Solar & Photovoltaics · Zurich · Since 2022

Enerphy Suisse AG provides renewable energy services focused on solar installations, energy management and storage solutions. The company designs and installs photovoltaic systems for residential, agricultural and commercial customers, integrates battery and green-hydrogen storage and supports finance and investment models. It also offers carbon services including emissions quantification, carbon credits, CO2 utilization and geological CO2 storage.

EnerSol Graf AG

Solar & Photovoltaics · Aadorf · Since 2010

The core activity of EnerSol Graf AG is the planning, consulting and implementation of projects in the field of renewable energies, particularly photovoltaics, energy management, storage and heat/cooling systems. The company offers services such as energy concepts, expert opinions, monitoring and implementation of systems, as well as consulting and planning for the responsible use of non-renewable energy sources.

Solar Solutions EngCon GmbH

Solar & Photovoltaics · Kreuzlingen · Since 2020

The core activity of EngCon GmbH is the development, planning, construction and realization of turnkey photovoltaic systems, in particular rooftop and open-space systems in all power classes, as well as the associated services such as project planning, installation, material procurement, construction management and supervision.

Engynious AG

Solar & Photovoltaics · Baar · Since 2001

The core activity of Engynious AG is the planning, construction and maintenance of decentralized renewable energy systems, in particular photovoltaic systems, as well as the provision of services in the field of energy generation and management. This includes the development of projects, the planning and installation of PV systems, the technical and commercial maintenance of plants, the optimization of energy costs and yields, as well as the provision of solutions for the storage and use of renewable energy.

ennos ag

Solar & Photovoltaics · Merzligen · Since 2006

ennos ag designs and manufactures the sunlight pump, a high-efficiency surface solar water pump for smallholder farmers and irrigation applications. The company supplies systems with features such as Pay‑As‑You‑Go and remote monitoring, cooperates with manufacturing partners (e.g. Jain Irrigation, NETZSCH, Innovex) and distributes its products through an international network of dealers.

Enosis Sàrl

Solar & Photovoltaics · Liebistorf · Since 2024

The core activity of Enosis SARL encompasses the planning, installation, and maintenance of renewable energy systems, particularly solar energy, as well as providing solutions for electrical power supply and installation. This includes: * Solar Energy: Installation and maintenance of solar panels, battery storage systems, and solar fences * Electrical Energy: Installation, maintenance, and quality assurance of electrical systems, including public lighting and lightning protection * Thermal Energy: Thermography and blower door tests for energy efficiency optimization * Hydraulic Energy: Installation and maintenance of hydraulic systems * Filtration Systems: Installation and maintenance of filtration systems for water and energy supply The company thus offers comprehensive solutions for energy supply and efficiency, with a focus on renewable energies and sustainable technologies.

EnQ Enlatec AG

Solar & Photovoltaics · Since 2023

EnQ Enlatec AG develops and implements solar power and energy storage solutions, including its Multi Combined Power Plant concept and scalable storage systems designed to support grid stability and manage peak loads.

ENSUN AG

Solar & Photovoltaics · Horn · Since 2024

The core activity of Ensun is the planning, installation and maintenance of photovoltaic systems for companies and multi-family homes. Ensun assumes the complete acquisition costs, maintenance, repairs and insurance of the systems for a period of 20 years, enabling customers to use the generated electricity themselves and feed surplus electricity into the public grid.

EOS Energy Solutions AG

Solar & Photovoltaics · St. Gallen · Since 2023

EOSONO SAILING GmbH

Solar & Photovoltaics · Benken Zh · Since 2009

The core activity of Eosono GmbH is the development, manufacture and distribution of photovoltaic systems, particularly aesthetic and efficient PV solutions for buildings and large-scale installations.

EOS Ristrutturazioni e Impianti di Sebastiano Conselmo

Solar & Photovoltaics · Soazza · Since 2017

EOS Ristrutturazioni e Impianti di Sebastiano Conselmo provides photovoltaic, solar thermal and hydraulic systems and performs interior and exterior building renovations. Services include design and turnkey installation of photovoltaic systems, installation of stainless-steel chimneys and pellet stoves/boilers, roof refurbishment and asbestos removal, plus permit handling and maintenance.

PROJEKTE SWM AG

Solar & Photovoltaics · Stäfa · Since 2012

EPAREN SA

Solar & Photovoltaics · Epalinges · Since 2021

The core activity of EPAREN SA is the realization, financing and operation of renewable energy plants, in particular solar energy plants.

EPASUS AG

Management Consulting · Steffisburg · Since 2017

EPASUS AG is a globally networking, technology-oriented company focused on sustainability markets, particularly energy efficiency, energy systems and renewable energies. It connects companies and innovations, supports or takes part in firms offering sustainability-oriented technologies or infrastructures, and provides strategic expertise on market positioning and efficiency improvements. The company also participates in the implementation of renewable energy systems, for example high-efficiency photovoltaic technology.

eplus elektroplanung GmbH

Solar & Photovoltaics · Uster · Since 2015

The core activity of e+ elektroplanung gmbh is the planning and implementation of electrical projects, particularly in the field of renewable energy and sustainable solutions.

E-Q GmbH

Electrical Planning & Installation · Herisau · Since 2020

E-Q GmbH provides electrical installations and network/data cabling for residential and commercial properties. The company implements smart-home systems (KNX, Loxone), plans and installs photovoltaic systems, and supplies telematics/VoIP and unified-communications services.

Erneuerbare Zukunft Holding AG

Solar & Photovoltaics · Adliswil · Since 2022

The core activity of the company 'Erneuerbare Zukunft Holding' is to provide holistic energy solutions, particularly in the field of renewable energies. This includes: planning and installation of photovoltaic systems, installation of battery storage systems, charging solutions for e-mobility, development of ZEV and vZEV models (association for self-consumption and virtual association for self-consumption), promotion of local energy communities (LEG), trading of solar power, and electricity billing. The company offers these solutions to businesses, industry, and private individuals, aiming to optimize their energy efficiency and independence, and contribute to climate protection and a sustainable energy future.

Erte Ingénieurs Conseils SA

Technical Consulting & Engineering · Carouge Ge · Since 1990

The core activity of ERTE Consulting Engineers AG is the planning, consulting and implementation of innovative energy concepts in the field of building technology, particularly in the areas of heating, ventilation, air conditioning, solar energy and earth-to-air heat exchangers. The company offers services from conception to maintenance and focuses on the development of environmentally friendly and efficient solutions for private and public construction projects.

E-Sol Energy Solutions Hugo Campos Fonseca

Solar & Photovoltaics · Winterthur · Since 2024

The core activity of E-Sol Energy Solutions is the planning, installation, maintenance and consulting of photovoltaic systems, storage and energy management systems for private and commercial customers.

ESOTEC GmbH

Solar & Photovoltaics · Innertkirchen · Since 1995

The core activity of esotec GmbH is the planning, installation and maintenance of energy and water supply systems for buildings in the Alpine region, particularly in remote areas without connection to the public utility grid. The services include the areas of photovoltaics, solar thermal energy, small hydroelectric power plants, drinking water supply, wastewater and sewage disposal, as well as mini combined heat and power plants. In addition, the company also offers general contractor services for new construction and renovation projects.

Esprit Energie Sàrl

Technical Consulting & Engineering · Saxonne (Ayent) · Since 2010

The core activity of Esprit Energie Sàrl is the planning and implementation of energy-efficient and sustainable construction projects, particularly in the field of Minergie and CECB standard buildings, as well as consulting and implementing projects in the field of renewable energy and sustainable development.

Esquisse Solaire Sàrl

Solar & Photovoltaics · Bussigny · Since 2018

Esquisse Solaire Sàrl is a consultancy specialising in BIPV (Building Integrated Photovoltaics) that advises on the architectural integration of solar energy into buildings. The company conducts studies for roofs and façades (sizing, cost and yield estimates, product recommendations, connections to installers) and supplies Esquisse Glass™, a coloured glass for photovoltaic façades based on a patent‑pending optical interference technology.

ESRJ Energy et services Sàrl

Energy Suppliers · Lausanne · Since 2024

ESRJ Energy et services Sàrl is a company operating in the energy sector, with a focus on electricity. It provides power trading in partnership with Services Industriels de la ville de Lugano (AIL), designs and installs solar generation systems, and offers advisory and strategic support services.

ESS EnergieService Schweiz GmbH

Electrical Planning & Installation · Aarau · Since 2024

ESS EnergieService Schweiz GmbH provides tailored residential solar energy solutions, including consultation, site and consumption assessment, system planning, component supply, installation and commissioning. The company coordinates delivery and installation with Swiss specialist partners and states the use of tested components with performance warranties.

e-swissolar AG

Solar & Photovoltaics · Zug · Since 2006

The core activity of e-swissolar AG is the development and provision of innovative products and services for the energy industry, particularly in the field of renewable energies and decentralized energy generation. Specifically, this includes: * The development of customized technology-based infrastructures (hardware and software) for the renewable energy industry * The creation of decentralized energy networks based on blockchain technology * The development of financing solutions for utilities, cities and municipalities through the use of token economy and DeFi systems * The promotion of local energy markets and support for utilities, cities and municipalities in the energy transition.

etb Elektroplanung GmbH

Technical Consulting & Engineering · Amriswil · Since 2023

etb Elektroplanung GmbH provides electrical planning services, including building and area electrical design, fire-alarm and security system planning, and consultancy for photovoltaics, EV charging infrastructure and emergency power supplies. The company supports projects from feasibility studies, tender documentation and CAD execution plans through construction supervision, commissioning and integrated testing.

Ethermo Sagl

Plumbing & Building Services · Rivera · Since 2018

The core activity of Ethermo is the provision of services in the field of heating and sanitary technology, particularly in the installation, maintenance and repair of heating systems, sanitary facilities and pools. Specific activities include: renovations and refurbishments, 24-hour repair services, installation and maintenance of heat pumps, and installation and maintenance of pools. The company thus offers a comprehensive range of services in the field of heating and sanitary technology and positions itself as a reliable partner for customers seeking a professional and efficient solution to their needs.

Euro Photovoltaik AG

Solar & Photovoltaics · Rothenburg · Since 2008

Euro Photovoltaik AG plans, designs and implements photovoltaic systems and energy storage solutions, and provides maintenance, cleaning and service for PV installations. The company also installs heat pumps and offers roof leasing and roof-search services.

Eusolar Energy Sagl

Electrical Planning & Installation · Camorino · Since 2013

The core activity of EUSOLAR Energy Sagl is the planning and implementation of plants that utilize renewable energy sources, in particular: Photovoltaic systems (solar power), Solar thermal systems, Geothermal systems, Heat pumps, LED lighting, and Carport photovoltaic systems. The company also offers services such as energy certification, energy diagnosis, and energy audits. Additionally, it supports customers in accessing funding and incentives for the implementation of plants that utilize renewable energy sources.

Evaarist SA

Solar & Photovoltaics · Sion · Since 2024

Evaarist SA is a specialist in the field of renewable energy and offers solutions for autonomous energy supply. The company's core activity includes the conception, planning and implementation of projects in the field of renewable energy, particularly in the areas of solar energy, heat production and energy efficiency. The company provides its services to both private households and businesses, as well as public institutions, and supports its customers in implementing projects that aim for sustainable and autonomous energy supply.

Evergreen Investment Partners AG

Solar & Photovoltaics · Baar · Since 2021

The core activity of Evergreen Investment Partners AG is the development, construction, financing and operation of solar energy and energy storage facilities, particularly in emerging markets. The company provides investment advisory services to financial institutions and supports them in originating, analyzing and negotiating investments in infrastructure projects, primarily in the field of renewable energy and electrical infrastructure.

EVS Energieversorgung Schänis AG

Energy Suppliers · Schänis · Since 2002

The core activity of Energieversorgung Schänis AG (EVS) consists of planning, operating and maintaining the electrical distribution network and gas supply in the municipalities of Schänis, Rufi and Maseltrangen. This also includes providing electricity and gas products, installing and maintaining electrical systems, photovoltaic systems and e-charging stations, as well as advising and supporting the use of renewable energies.

EWCT GmbH

Solar & Photovoltaics · Siselen Be · Since 2022

The core activity of EWCT GmbH is energy consulting and the installation of photovoltaic systems, battery storage systems and smart home solutions, in order to support customers in sustainably reducing their energy costs and promoting their independence from external energy suppliers.

E-Werk23 GmbH

Electrical Planning & Installation · Rüti Zh · Since 2023

E-Werk23 GmbH provides consulting, design and installation of photovoltaic systems, energy storage solutions and Loxone-based home automation, and offers maintenance and support services.

eWorks Elektro AG

Electrical Planning & Installation · Murten · Since 2020

eWorks Elektro AG offers electrical services including consulting, planning and project engineering, and the execution of electrical installations for new builds, renovations, maintenance and repairs, as well as lighting and custom luminaires. The company also provides smart home/KNX systems, photovoltaic installations and telecommunication/network services.

Exista AG

Solar & Photovoltaics · Mönchaltorf · Since 1988

The core activity of Exista AG is the development, manufacture and distribution of power supplies, battery energy solutions and LED systems for various industries such as industry, medicine, household and LED lighting technology. The company also offers services such as consulting, development, production, project management, repairs and service.

Eysi Energii GEN

Solar & Photovoltaics · Stans · Since 2016

The core activity of Eysi Energii GEN is the promotion and realization of projects in the field of renewable and sustainable energy, particularly through the joint self-help of its members. This includes the planning, implementation and operation of projects such as photovoltaic systems, energy efficiency measures and mobility solutions. The company also provides consulting and services in these areas and promotes the use of renewable energy in the Nidwalden region.

Face In Tec SA

Solar & Photovoltaics · Crissier · Since 2015

The core activity of Face InTec SA is the development and implementation of sustainable and energy-efficient solutions for the construction industry, particularly through the integration of solar technology into building envelopes. This includes planning, consulting, project management and implementation of solar energy solutions such as ventilated solar facades, solar railings, solar roofs, sunshades and solar glass walls.

faciTech Sàrl

Technical Consulting & Engineering · Vuiteboeuf · Since 2016

faciTech Sàrl facilitates technology exchanges between Switzerland and China and assists companies with product sourcing for import–export and the development of production facilities in China. The company also provides translation services, organises conferences and educational activities, offers investment solutions, and distributes solar modules and specialised glass products such as glass–glass PV modules and anti‑reflective or TCO coatings.

Fasel Energie AG

Energy Suppliers · Alterswil Fr · Since 2019

The core activity of Fasel Energie AG is the generation and supply of renewable energies, in particular solar energy and district heating.

Felder Holz-Solarenergie

Solar & Photovoltaics · Sempach · Since 2007

Felder Holz-Solarenergie specializes in the installation and service of wood-fired heating systems and solar thermal systems for domestic hot water and heating support. Services include delivery, installation, commissioning and maintenance of wood chip, pellet and log boilers, storage and control systems, system integration and monitoring.

Felixsolar GmbH

Solar & Photovoltaics · Zurich · Since 2023

Felixsolar GmbH designs, supplies, installs and maintains photovoltaic systems and provides related services such as grant application support, monitoring setup and energy management. Its offering includes solar modules, power optimizers, SolarEdge inverters and optional battery storage integrated with the SmartFox energy manager.

FENIQS Ingénieurs Conseils SA

Technical Consulting & Engineering · Orbe · Since 2020

The core activity of FENIQS Ingénieurs Conseils SA is to advise and support municipalities, companies, builders and private individuals in the implementation of energy efficiency and sustainability projects.

Feryon SA

Construction & Project Management · Fribourg · Since 2023

Feryon SA provides photovoltaic and renewable energy solutions, supporting clients from site analysis through to commissioning. Services include energy assessment and consultancy, turnkey solar installations, contracting/PV‑invest models, and handling permits and subsidy applications.

F. Hösli AG

Solar & Photovoltaics · Schwanden Gl · Since 2002

The core activity of F. Hösli AG is the execution of sanitary work, plumbing, energy consulting, planning and installation of solar systems. The company also offers services in the field of bathroom renovation, water softening systems and other sanitary facilities.

Fid4you Ltd. Liab. Co

Solar & Photovoltaics · Montreux · Since 2014

Fine Energy AG

Solar & Photovoltaics · Einsiedeln · Since 2010

The core activity of Fine Energy AG is the distribution and marketing of photovoltaic modules and components through technical wholesalers and retailers to electrical and heating installers, as well as the development and provision of individual photovoltaic solutions with crystalline modules and special off-grid photovoltaic systems.