e4plus AG

e4plus AG in Kriens advises public and private property owners on energy efficiency and the use of renewable energy. Its buildings-and-energy practice covers heating replacement, solar installations, thermal insulation, and concepts for net-zero-capable construction. When assessing buildings it relies on GEAK and GEAK Plus, and says it has already issued more than fifty certificates on that basis.

The office has been operating for around thirty-five years and is well established in central Switzerland, with reference projects in municipalities such as Sursee, Rothenburg, Hochdorf, and Entlebuch. For sustainable construction it acts as the SNBS certification body for central Switzerland. Work and consultations are conducted in German.