In order to relieve the building of its dependence on fossil fuels, the energy saving tactics employed are extensive and robust, starting with the orientation of the building to the south with a fully glazed façade to take advantage of solar gain during winter. The precast exterior walls feature 20cm of rigid insulation resulting in a U-Value of .12 W/m2K. Roof construction comprises a concrete structural slab built upon with 60cm of insulating glass foam gravel, and further enhanced through the addition of the earthen layer that supports the intensive green roof. High performance triple pane glazing is held in place with RAICO thermally broken mullions. In addition to providing high levels of insulation, air tightness plays a significant factor in the overall efficiency of the building envelope system as a whole. When tested with the blower door, the Kita Kindergarten came in at n50 = 0.43h-1, surpassing the Passive House standard of n50 < 0.6h-1. Al-Ko Therm controlled air distribution in conjunction with a HRV achieves a heat recovery ratio of 80%. Although the spaces of the kindergarten are predominantly heated through passive solar gain, the system is provided with backup from the central campus heating and cooling plant.