Energy & Environment

Dialog N GmbH 

Uster · Since 2016

The company's core activity is the implementation of research projects, evaluations and communication projects at the interface of humans and the environment, particularly in the field of Education for Sustainable Development (ESD) and environmental communication. This includes the development and implementation of projects that focus on promoting sustainability-related behaviors, researching environmental topics and communicating environmental information.

Dialog Umwelt GmbH 

Biel/Bienne · Since 2007

The core activity of dialog:umwelt is the provision of services in the fields of environment, communication and corporate consulting.

Diego Fischer Solar and Engineering 

Neuchâtel · Since 2014

Diego Fischer Solar and Engineering provides planning, consulting and turnkey installation of photovoltaic systems and related equipment such as battery storage, electric vehicle charging stations and surplus energy management solutions.

Diemer Sustainability Consulting GmbH 

Bänk (Dägerlen) · Since 2019

The core activity of Diemer Sustainability Consulting is to advise and support companies, non-governmental organizations (NGOs) and public institutions in the areas of sustainability, accountability and environmental protection. Specifically, this includes the development and implementation of sustainability standards, the implementation of monitoring and evaluation projects, as well as the creation of reports and communication strategies. The company also supports the selection and implementation of certification systems and helps navigate complex regulatory requirements.

DIENSTLEISTUNGEN VARGA 

Basel · Since 2009

DIENSTLEISTUNGEN VARGA provides construction, landscaping and cleaning services as well as clearances, disposal, caretaking, removals and transport. Services listed on the website include wall demolition, plumbing and concreting, construction/final cleaning, garden maintenance and furniture moving.

DILECA 

Affoltern Am Albis · Since 2019

The core activity of DILECA is the provision of services and goods in the field of municipal waste management and fire police. Specifically, this includes: waste bag disposal, animal carcass disposal, fire police inspections, waste advice and education, waste separation and disposal, and special waste disposal. DILECA is thus a company specialized in waste disposal and environmental protection in the areas of waste and fire police.

Dionea SA 

Locarno · Since 1988

The core activity of Dionea SA encompasses consulting and planning in the fields of environment, territory, nature and landscape, particularly in the following areas: environmental consulting and planning, territorial planning and development, nature conservation and management, landscape planning and design, and forestry and forest management. The company offers services such as the creation of plans and strategies for the sustainable development of territories, the implementation of environmental studies and analyses, the planning and implementation of nature conservation projects, and the consulting of municipalities and other institutions on environmental and territorial planning issues.

Dipan SA 

Nyon · Since 2011

The core activity of DIPAN is the development and application of solutions for the global management of your real estate portfolio, particularly in the field of water and hydraulic technology. This includes: Diagnostic and treatment of hydraulic systems (Hydrodiag); Development and application of GreenTech solutions for the sustainability and safety of buildings; Provision of products and services to prevent problems such as rust, lime and bacteria in hydraulic systems; Research and development in partnership with scientific institutions to improve solutions for water and hydraulic technology.

DiZtribution GmbH 

Niedergösgen · Since 2024

DiZtribution GmbH distributes sustainable beverages and food products. The company provides distribution services for beverage and food brands.

DJO-Energies Sàrl 

Cheyres · Since 2023

The core activity of DJO-Energies is the planning, implementation and installation of photovoltaic systems, in particular solar panels and related infrastructure, to support private and commercial customers in the implementation of projects in the field of renewable energy.

dk Haustechnik GmbH 

Thayngen · Since 2012

dk Haustechnik GmbH specialises in sanitary installations, heating, solar and climate systems, providing planning, installation and maintenance services. The company operates a 24-hour emergency on-call service across its business areas.

DMD Green Capital AG 

Meisterschwanden · Since 2022

The core activity of DMD Green Capital AG consists of the acquisition, planning and implementation of solar and wind projects in the field of renewable energies, as well as the brokerage of investment opportunities in these projects for investors.

DOLEFAR SA 

Denges · Since 1989

The core activity of Dolefar SA is the planning, installation and maintenance of renewable energy systems, particularly: solar energy (solar panels), heat pumps and water softening systems. The company also provides consulting services for the energy renovation of buildings and supports customers in applying for subsidies for energy-related measures.

Dona Bertarelli Philanthropy 

Gstaad · Since 2016

The company's core activity is philanthropy, particularly in the areas of environmental protection, nature conservation and marine conservation. The company supports various projects and initiatives to protect the global environment and preserve biodiversity.

Dorfbrunnengenossenschaft Dagmersellen 

Dagmersellen

The core activity of PRINTEX AG is not water supply, but rather the realization of websites and other digital solutions, as evident from the first two sections, which mention the "realization" by PRINTEX AG. The core activity of Dorfbrunnen Genossenschaft Dagmersellen is water supply, including ensuring drinking water, providing fire-fighting water, maintaining and expanding facilities and pipeline networks, as well as ensuring water quality.

Dorfgenossenschaft Schwyz 

Schwyz

The core activity of Dorfgenossenschaft Schwyz (DGS) is the safe and efficient water supply for the municipality of Schwyz. This includes the extraction, treatment and distribution of drinking water, as well as the maintenance and upkeep of the necessary infrastructure such as pipes, drinking water power plants and reservoirs.

Dorfstrom AG 

Buttisholz · Since 2024

DoubleA Solutions GmbH 

Grenchen · Since 2025

The core activity of DoubleA Solutions GmbH is the development and provision of solutions in the field of renewable energy (solar) and information technology (IT). Specifically, this includes the planning, installation and optimization of solar systems as well as the provision of IT services aimed at supporting companies in the digitization and optimization of their processes.

Doveron AG 

Thayngen · Since 2010

The core activity of Doveron AG is the development, manufacture and distribution of machines for weed control and elimination, particularly ecological solutions such as the iProGreen machine, as well as other machines such as bending machines and steam cleaning devices under the brands iProGreen, iProTech and Lumag.

down to earth Permaculture, Marcus Pan 

Feldbach · Since 2019

The core activity of the company 'down to earth' is the mediation and implementation of permaculture concepts through consulting, planning, training and coaching. The company offers online and live courses, workshops, books and projects to support people in shaping their lifestyle and environment in a sustainable way. The activities also include the design and implementation of permaculture systems, coaching and the organization of events.