Rising energy consumption, scarcity of resources and environmental pollution put our livelihoods long-term in question. Sustainability means pursuing new paths, to develop ideas and concepts that guarantee humanity today and in the future a livable environment.

We want to expand our knowledge and pass it on. In addition to continuous employee training, we specifically foster collaboration with research institutes and get involved in professional groups. This way we stay up to date with the latest knowledge. Furthermore we pass on our experience within different teaching activities, for example, at the University of Liechtenstein and the Lucerne University of Applied Science and Arts.

EK Energiekonzepte AG was founded in 2007 by Bob Gysin + Partner and 3Plan AG. It originated from the Initial Project Forum Chriesbach. In 2010 Lenum AG, in Liechtenstein, became the majority stake holders in 3Plan AG. Since then, EK Energiekonzepte AG and Lenum AG have been sister companies that work very closely together. Together the two companies have mutual access to a broad range of knowledge and a great wealth of training and experience.

Since 2020, EK Energiekonzepte and Lenum’s lighting design has been combined under our new brand spectrum ( and thus reconciles different interdisciplinary competences at two locations.

Memberships in associations

EK Energiekonzepte AG, Lenum AG or an employee are members of the following associations:

DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e.V.
ENAW Energieagentur der Wirtschaft
Energie Cluster
FEZ Forum.Energie.Zürich
LIA Liechtensteinische Ingenieur- und Architektenvereinigung
NNBS Netzwerk Nachhaltiges Bauen Schweiz
SES Schweizer Energie Stiftung
SGA Schweizerische Gesellschaft für Akustik
SGNI Schweizer Gesellschaft für Nachhaltige Immobilienwirtschaft
SLG Schweizerische Lichtgesellschaft
SVU Schweizerischer Verein für Umweltfachleute
US Green Building Council (LEED)
VDI Verein Deutscher Ingenieure e.V.
Verein Green Building Schweiz
VOBE Verband Ostschweizer Bau + Energie-Fachleute