Heat for the building is primarily sourced from a “heat-sink” roof, harnessing solar energy stored in reclaimed water bottles, with geothermal heat pumps meeting additional needs. The building’s narrow design facilitates natural ventilation for cooling in summer. Sunlight filters through the glass and water of the roof, providing daylight while showcasing the energy capture system. Electricity comes from solar panels covering the parking area, generating surplus power sold back to the grid. With cutting-edge passive design, the buildings are highly efficient.