Strijp-S, a major redevelopment of the former Philips business site, is located near the city center of Eindhoven, in the Netherlands. Philips sought groundwater energy for the mixed-use project, but had to contend with a site that had significant groundwater contamination due to heat-cold storage and 100 years of industrial activity. In response, ARCADIS delivered Sanergy, an innovative groundwater energy system that is also capable of performing remediation of the contaminated site.

A significant challenge of the effort was containment of pollution, as traditional heat-cold storage on the site would spread contaminants through the groundwater. The team developed a recirculation system that does not produce storage, responds to seasonal changes and simulates natural degradation. As a result of these efforts, the systems produced a CO2 reduction of 3.0 kilotonnes for heating/cooling with no extra emission for the groundwater remediation. The significant cost and legacy impact of this innovative and unique system had already attracted the interest of other corporations in the Netherlands.