These results surpassed even the directors’ vision of the features, qualities, and design process they had mandated for their bank. Their design prospectus had stipulated an “organic” building that would “integrate art, natural and local materials, sunlight, green plants, energy conservation, quiet, and water” — not to mention happy employees — and that would “not cost one guilder more per square meter” than the market average. In fact, the money spent to put the energy savings systems in place paid for itself in the first three months. Upon initial occupancy, the complex used 92 percent less energy than an adjacent bank constructed at the same time, representing a saving of $2.9 million per year and making it one of the most energy-efficient buildings in Europe.