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.

At the beginning of 2017, Light Design Engineering (LDE) Ltd Liechtenstein was integrated into Lenum AG. With light planning, we not only cover energy concepts, building physics and sustainability guidelines but also another specialist area of integrated energy planning. Thanks to the merger with LDE Liechtenstein AG, we have a 5 member lighting design team with many years’ experience. Uwe Belzner was co-founder of LDE Belzner Holmes in Stuttgart in 1989. In 2003 he founded LDE Liechtenstein AG.


Memberships in associations

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

DECHEMA Society for Chemical Engineering and Biotechnology registered association
ENAW Business Energy Agency
Energy City
FEZ Forum.Energy.Zurich
LIA Liechtenstein Engineer and Architects association
NNBS  Network for Sustainable Building Switzerland
Passive House planner
SES Swiss Energy Foundation
SGNI Swiss Society for Sustainable Real-estate Management
SGL Schweizerische Lichtgesellschaft
SVU Swiss Society for Environmental Experts
VDI Association of German Engineers, registered association
VOBE East Swiss Society Building and Energy Experts
Liechtenstein Chamber of Commerce