Design NotesThe Pax I House is designed for net-zero energy usage through either an all-electric model or one that uses natural gas offset by solar energy production. This particular home is all-electric and outfitted with a 36-panel 10.8kW photovoltaic system designed by solar contractor Donald P. Dick http://www.mrcool4ac.com/. Since the solar system was critical to the initial plan, it enabled the architects to integrate it so as to be almost invisible from the home’s front elevation. The iconic 1-in-12 pitched roof is covered with a highly reflective, single-ply, PVC roofing membrane http://www.ibroof.com/pvc-roofing-membranes/. Seams are heat-welded, like commercial sheet vinyl flooring. The dwelling shown is in Fresno, California, where from May to September 2017, the average temperature was 90 degrees with a high of 111. During this timeframe, the most expensive monthly utility bill for this home was thirteen dollars.