Every day, we see buildings that do not perform. They consume too much energy, maintenance costs are too high and people living and working in them are unhappy, unproductive or even sick.
Business as usual is not good enough.
We believe buildings can perform better: they can be more efficient and more comfortable.
Performance contracting is a very powerful tool in upgrading and managing buildings. We want to use this business model to the maximum extent.

Johan Coolen


We don’t sell equipment or materials. We develop improvement projects and focus on the result. We are prepared to take our responsibility and share the investment risk.
Our customers are SME’s, large companies, communities, schools, apartment buildings, energy cooperatives and public authorities.
We provide solutions from start to finish, covering all relevant techniques.
We participate in several research projects related to innovation in the field of performance contracting and energy efficiency.

Sven Wuyts


‘Factor four’ refers to a fourfold increase in ‘resource productivity’ by simultaneously doubling wealth and halving resource consumption.
The idea was introduced in 1998, in a book written by L. Hunter Lovins and Amory Lovins and Ernst von Weizsäcker.
The concept ‘Factor 10’ also exists: in the long run, resource use needs to be slashed tenfold when we aim for a true sustainability…

Office in Belgium
Lange Winkelhaakstraat 26
B-2060 Antwerp
T +32 3 225 23 12
Find out here how to reach us and where to park.
You can leave your bike in a locked area in the building.

Office in the Netherlands
Cronenburg 152
1081 GN Amsterdam


VAT 0884 068 589
IBAN: BE38 7380 3377 0772 
RPR: Mechelen

Contact us

3 + 9 =