The view from the street is of a spectacular-looking structure boasting visually appealing architectural details and solid construction. You might be surprised to learn that the prefabricated WeberHaus Passive House actually uses 90 per cent less energy than a conventional home. German homebuilder WeberHaus has become somewhat of an expert in the art of energy conservation, having built more than 29,000 Passive Houses since the company’s start in 1960. The notably low energy use by the Passive House is made possible by harnessing “passive” sources of energy – solar energy, geothermal energy, and otherwise wasted energy from residents’ body heat and the heat generated by electrical appliances. The Passive House is outfitted with a solar energy system, controlled ventilation heating and heat recovery, and a European Installation Bus (EIB) to control lights and roller blinds. Additional features include a compass roof, a circular window in the front wall, slanted balcony supports and large south-facing windows to maximize the sun’s energy. WeberHaus.