Energy & Environment

ecoenergy Valais SA 

Vétroz · Since 2020

The core activity of ecoenergy Valais SA is the production of renewable energy, particularly heat and electricity, from local wood waste. The company operates an energy centre in Vétroz and a district heating network in Vétroz, Conthey, Sion and Nendaz, to supply the produced heat to the local population.

Ecoglass Eventi Sagl 

Manno · Since 2020

The company offers personalized, reusable glasses and tableware, particularly for events and companies, with the aim of reducing waste from single-use products and providing a sustainable solution. The core activities include the production and rental of personalized glasses and tableware, as well as related services such as cleaning and storage.

Ecoleader GmbH 

St. Gallen · Since 2022

Ecoleader GmbH provides sustainability consultancy to businesses and organisations, including sustainability strategy development, materiality analyses and the integration of ESG criteria into corporate processes. Services also include training and stakeholder engagement, support for sustainability reporting, and guidance on compliance with frameworks such as the SDGs, SBTi, TCFD and CSRD.

Econetta AG 

Schlieren · Since 1988

The core activity of Econetta AG is the provision of services in the field of environmental analytics, environmental toxicology, product conformity and sustainability, particularly for the real estate industry and manufacturing. This includes, among other things: site assessment and remediation, environmental analytics (soil, water, air and buildings tested for pollutants), product conformity and sustainability (ecotoxicological assessment of construction chemicals and explosives), risk assessment and reduction for the entry of pollutants into water and groundwater, and analytics of solid and water samples including reporting. The company thus offers a wide range of services aimed at protecting the environment and developing sustainable solutions for customers.

eConnect GmbH 

Bubikon · Since 2015

The eConnect GmbH company focuses on planning, implementing and maintaining solutions for renewable energy and energy efficiency. The core activities include: * Installation and maintenance of photovoltaic systems (eSolar) * Planning and implementation of energy management systems (eEnergy) * Installation and maintenance of charging stations for electric vehicles (eMobility) * Planning and implementation of battery storage systems (eStorage) * Conducting inspections and checks of energy systems (eCheck) The company thus provides comprehensive solutions for the generation, storage and use of renewable energy and supports its customers in optimizing their energy efficiency.

Eco-Optimum di Ing. André Roesti 

Arogno · Since 2009

The core activity of Eco Optimum is the planning, installation and optimization of energy efficiency solutions for buildings, particularly in the field of renewable energies, such as photovoltaics, as well as the implementation of thermographic analyses for energy efficiency optimization.

ECO-SWISS-SOLAR GmbH 

Zug · Since 2015

ECO-SWISS-SOLAR GmbH supplies electric storage heaters and related products, including solutions to replace old night-storage heaters. The offering includes digitally controlled storage heaters with app control, various mounting options and applications for holiday homes, containers, mobile offices and motorhomes. The website provides product information, warranty details and guidance on use cases.

EcoTool AG 

Basel · Since 2024

The company develops and offers a software solution called EcoTool, which enables architects, builders and manufacturers to easily and reliably calculate and optimize the ecological balance of construction projects. The software supports the planning of sustainable and energy-efficient buildings and allows the evaluation of materials and components in terms of their CO2 emissions.

ee3 GmbH 

Oberwil B. Zug · Since 2010

The core activity of ee3 is consulting and implementing solutions in the fields of renewable energy, energy efficiency and sustainability for companies and private individuals. The company offers a wide range of services, including energy concepts, energy monitoring, energy measures, energy audits, energy consulting and energy labeling. ee3 supports customers in developing sustainable energy concepts, optimizing energy consumption and reducing CO2 emissions.

Effienergie AG 

Zurich · Since 2006

The core activity of Effienergie AG is the promotion of energy efficiency and the reduction of energy consumption, particularly in the building sector. The company offers various services, including energy consulting, owner representation, building inspections and the development of funding programs, to achieve more efficient energy use and reduce CO2 emissions.

Egon AG 

Zurich · Since 2009

The Egon AG company offers energy solutions and services in the field of renewable energies, particularly in the areas of photovoltaics, solar thermal energy, heat solutions and electromobility. The core activities include the development and implementation of energy monitoring systems, the management and billing of virtual ZEV systems (association for self-consumption) as well as the provision of training and webinars for installers and administrations.

EKJ Kanalreinigung AG 

Jona · Since 2019

The core activity of EKJ Kanalreinigung AG is the cleaning, maintenance, inspection and repair of drainage systems, including sewer cleaning, sewer television and wastewater disposal. The company also offers services such as new construction acceptance, condition assessment, maintenance cleaning and emergency services.

Electropro S.A. 

Neuchâtel · Since 1996

The core activity of ElectroPro SA is the provision of services in the field of electrical installation, including: new building installations, industrial and renovation installations, electrical assembly and installation, photovoltaic systems, safety systems (e.g. lightning protection), domotics and home automation, as well as repair and maintenance services (24/7). The company also offers training and education programs for electrical professionals and is a member of various industry associations.

ELEKTRA ENERGIE Genossenschaft 

Linden · Since 1918

The company's core activity is the supply of customers with electricity, particularly from ecological energy sources, as well as the provision of services related to electricity connections, photovoltaic systems, heat and biomethane. The company also offers consulting and support for construction projects and house installation checks.

Elektra-Genossenschaft Gipf-Oberfrick 

Gipf-Oberfrick · Since 1908

The core activity of Elektra-Genossenschaft Gipf-Oberfrick (EGO) is the supply of electricity. The company is responsible for providing customers with electrical energy.

Elektra-Genossenschaft Sommeri 

Sommeri · Since 1911

The core activity of the company is the public administration and service for the municipality of Sommeri, including the supply of water and electricity, waste management, building administration, resident services, civil registry office, tax office, social services and other municipal tasks.

Elektra Horn AG 

Horn · Since 2013

The core activity of Elektra Horn AG is the supply of electricity, including planning, construction and maintenance of the network, as well as electricity delivery, particularly for the municipality of Horn.

Elektra Mümliswil-Ramiswil Genossenschaft 

Mümliswil · Since 1907

The core activity of Elektra Mümliswil-Ramiswil is to supply the municipality of Mümliswil-Ramiswil with electricity and multimedia services, including the maintenance and upkeep of the electricity and multimedia distribution network.

Elektrizitätsgenossenschaft Gossau ZH 

Grüt (Gossau Zh) · Since 2009

Elektrizitätsgenossenschaft Gossau ZH operates and maintains the local electricity distribution network, including load‑control systems, street lighting and distribution cabinets, and supplies customers with electrical energy. The cooperative offers energy products drawn exclusively from renewable sources (GOSSAU NATUR BUDGET / PREMIUM / SELECTION) and provides services such as grid connections, installation checks and the smart‑meter rollout.

Elektrizitäts-Genossenschaft Siggenthal 

Nussbaumen Ag · Since 1913

The company's core activity is the generation and marketing of solar power as well as the provision of services in the energy and grid sector.

Elektro-Moser 

Seuzach · Since 2006

The core activity of Elektro-Moser is the performance of electrical inspections, in particular periodic inspections of single and multi-family homes, industries and businesses, as well as final and acceptance inspections for third-party companies. This also includes the safety certificate (SiNa) for changes in property ownership and random sampling inspections of electricity works by public authorities.

e-Léman Energies SARL 

Nyon · Since 2025

The core activity of e-Leman-Énergies is the planning, installation and marketing of renewable energy solutions, particularly photovoltaic systems, solar parks, electric vehicle charging stations and related accessories. The company also provides consulting and services for optimizing energy efficiency and implementing projects in the field of renewable energy.

Elettro Cangiano 

Gerra (Gambarogno) · Since 1995

The core activity of Elettro Cangiano consists of planning, installing and maintaining various types of electrical systems, including: electrical systems for civil and industrial use, photovoltaic systems for the production of renewable energy, multimedia systems for the connection of audio, video and data transmission, repair service for electrical systems, heating systems and household appliances, eMobility (charging infrastructure for electric vehicles) and Domotica (intelligent building automation). The company therefore offers a wide range of services in the field of electrical engineering and renewable energy.

ELETTROINNOVA SA 

Pregassona · Since 2004

The core activity of Elettroinnova SA encompasses the planning, development and implementation of projects in the fields of telecommunications, photovoltaics, energy efficiency, electromobility and lightning protection. The company offers solutions for the installation and maintenance of telecommunications systems, photovoltaic systems, energy efficiency solutions, charging stations for electric vehicles and lightning protection systems.

Emch+Berger Revelio AG 

Bern · Since 2012

Emch+Berger Revelio AG provides consolidated expertise in renewable energies and energy efficiency, offering planning, consulting and project management services for photovoltaics, wind power, hydropower and district heating and cooling.

Emil Landsrath AG 

Basel · Since 1972

The core activity of Emil Landsrath AG is the provision of services in the field of roofing and sheet metal work, including the installation of lightning protection and solar systems, as well as the performance of roof inspections and repairs.

e-montage gmbh 

Lausen · Since 2023

The core activity of e-montage is the professional installation of solar/photovoltaic systems, including the dismantling of old systems, as well as the execution of wood assemblies and other specialized installation work.

EnAdvice GmbH 

Basel · Since 2009

The core activity of EnAdvice AG is consulting and developing sustainable solutions for the energy industry, particularly in the area of digital energy transition. The company supports customers in implementing strategies for a sustainable future, including optimizing energy efficiency, reducing CO2 emissions, and integrating digital technologies. The services include, among others, market analysis, innovation development, technology integration, process optimization, agility integration, promotion, data analysis and optimization, as well as change management.

EnerCom Kirchberg AG 

Kirchberg Be · Since 2001

The core activity of EnerCom Kirchberg AG is to supply the municipality of Kirchberg with energy and communication services, including the maintenance of public lighting. Specifically, this includes the provision of electricity and communication services such as Quickline, as well as the installation and maintenance of PV systems, charging solutions for electric mobility and other energy-related services.

ENERCO Sàrl 

Sion · Since 2019

ENERCO Sàrl provides planning, consulting, project execution and installation of photovoltaic systems and solar carports, including self‑consumption solutions. The company also supplies and integrates electric vehicle charging infrastructure and serves residential, commercial, tourism and public‑sector clients.

Energate23 Sàrl 

Court · Since 2023

The core activity of Energate23 is the installation of photovoltaic panels (solar systems) on roofs and other surfaces throughout Switzerland. The company also offers additional services such as creating customized offers, technical support, applying for subsidies, and optimizing the profitability of solar systems.

Energiebüro AG 

Zurich · Since 2004

The company energiebüro is a service provider in the field of renewable energies and energy efficiency. The core activities include the planning, implementation and operation of solar and hydroelectric power plants, as well as the analysis and optimization of building systems and energy efficiency. The company also offers consulting and engineering services for the development of energy concepts and the implementation of energy efficiency measures.

Energie Gossau AG 

Gossau Zh · Since 2010

The core activity of Energie Gossau AG is the safe supply of customers with electrical energy, particularly through the operation and maintenance of the power grid, remote control systems, street lighting and cable distribution cabinets in the Gossau Dorf district. In addition, the company offers various energy products that come exclusively from renewable sources, such as solar power and biomass power.

Energie Netzwerk GmbH 

Bachenbülach · Since 2014

The core activity of Energie Netzwerk GmbH is the planning, operation and quality assurance of photovoltaic systems. The company offers comprehensive services, including consulting, technical planning, solar architecture, visualization, remote monitoring, service and repair, fault detection, cleaning and maintenance of photovoltaic systems.

Energie Oberegg AG 

Oberegg · Since 2015

Energie Oberegg AG operates and develops a district heating network. The company supplies the network with renewable energy sources (pellets, wood chips, solar), captures usable industrial waste heat and provides information on connections and energy prices for customers.

Energietechnik Jäggi GmbH 

Boningen · Since 2023

Energietechnik Jäggi GmbH provides consulting, design, installation and maintenance services for electrical and IT installations, energy generation systems, cooling and heating systems, electric vehicle charging stations, energy assessments and smart-home solutions.

Energie- und Wasserversorgung Oberburg 

Oberburg · Since 2003

The core activity of EWO is the supply of energy and water, particularly the provision of electricity and water to the municipality of Oberburg. This also includes the planning, implementation and maintenance of the corresponding infrastructure, as well as the billing and distribution of electricity and water.

Energiewende Jurasüdfuss GmbH 

Langendorf · Since 2021

The core activity of the company 'Energiewende Jurasüdfuss GmbH' is the planning, consulting and support for the construction of photovoltaic systems for self-construction, with the aim of promoting the energy transition and fostering renewable energy sources.

EnergiQ SA 

Bramois · Since 2024

The core activity of EnergiQ SA is the installation of renewable energy solutions, particularly photovoltaic systems, and the optimization of energy efficiency in Switzerland. This includes the planning, installation and maintenance of solar systems, the implementation of energy audits and the implementation of measures to increase energy efficiency. The company also offers services such as applying for subsidies, monitoring and maintaining systems, and conducting quality controls.

Energy Control ECEK GmbH 

Gampel · Since 2023

Energy Control ECEK GmbH is an independent inspection company focused on electrical installations and energy systems. It carries out periodic, acceptance and final inspections, certifies photovoltaic installations and performs device testing according to SN EN 50699 and SN EN 50678. The company also provides training courses and practical training for electrical project leaders on topics such as photovoltaics, e‑mobility and NIN updates.

Energy Control ECEK GmbH 

St. Stephan · Since 2022

Energy Control ECEK GmbH is an independent inspection company that carries out testing and certification of electrical installations and energy-related services. Its services include periodic, acceptance and final inspections for residential, commercial and industrial systems, photovoltaic and EV charging-station verifications, device testing per SN EN 50699/50678, as well as training courses and measurement practicums.

Enerprice Service AG 

Root D4 · Since 2014

The core activity of Enerprice AG is independent energy procurement and optimization for the Swiss economy. This includes the procurement and delivery of electricity, natural gas, heating oil, wood pellets and certificates, as well as the analysis of consumption data and the development of energy efficiency solutions for decarbonization.

Enerprice Partners AG 

Root D4 · Since 1995

Enerprice Partners AG is an independent, owner-managed energy services firm that supports Swiss businesses with energy monitoring, consumption data management and billing, and with energy procurement (electricity, natural gas, heating oil, wood pellets and certificates). The company also provides consultancy and project services for energy efficiency, CO2-footprint calculation and decarbonization, including photovoltaic planning and aggregation/virtual power plant solutions.

Enersave Sagl 

Bedano · Since 2023

The core activity of Enersave Sagl is the planning, production and maintenance of plants that produce energy from renewable sources, in particular: solar energy systems (thermal and photovoltaic systems), heating and air conditioning systems, electric vehicle charging stations, and energy efficiency and energy saving solutions. The company also offers services such as design and installation of systems, as well as the sale of products such as household appliances and accessories.

ENESS GmbH 

Rothenburg · Since 2006

The core activity of ENESS GmbH is the development, distribution and implementation of energy-saving lighting solutions, particularly in the field of LED lighting, as well as the provision of intelligent, self-learning and adaptive lighting systems for various application areas such as industry, wholesale and retail, architecture, gastronomy and others.

ENGA GmbH 

Biel/Bienne · Since 2022

The core activity of ENGA is the development and manufacture of products through 3D printing and assembly, using recycled plastics and bio-based materials, with the aim of reducing waste and minimizing the environmental impact of products.

Eniwa AG 

Buchs Ag · Since 2000

The company's core activity encompasses energy production and supply, particularly in the areas of electricity, natural gas/biogas, district heating/district cooling and water networks. In addition, the company offers services in the fields of telecommunications, mobility, building technology, infrastructure development and energy-related waste recycling.

entsorgungspartner.ch GmbH 

Winterthur · Since 2016

The core activity of entsorgungspartner.ch includes the following services: disposal of industrial waste, windows and mixed materials; transportation of goods, including storage and delivery; delivery and collection of test weights for elevator systems; and disposal of packaging materials and precision work in elevator shafts. The company thus offers a comprehensive range of services in the fields of disposal and transportation.

Enysol GmbH 

Itingen · Since 2024

The core activity of Enysol GmbH is the planning, consulting, delivery and installation of solar power systems, including custom-built solutions, to support customers in the use of renewable energies.

ERDE Schweiz 

Aarau · Since 2022

The core activity of ERDE Schweiz is the collection and recycling system for agricultural plastics, particularly silage bale films, nets and twines, in Switzerland. The company collects these plastics from farmers and other collection points and recycles them to conserve resources and actively protect the climate.