Populus provided HERS Rating and consulting for this high performance home at the foot of Boulder’s Flatirons. Energy efficient solutions such as a SIP roof, open-cell foam insulation, a ground source heat pump and a solar photovoltaic array drastically reduce the carbon footprint of this home, making it 60% more efficient than a conventional home built to code. With its high-end finishes and an extensive complement of windows to take in the breathtaking Flatirons view, this project is proof that you can build a high-performance home without sacrificing aesthetics.