Case study of two DOE 2015 Housing Innovation Award-winning custom homes in the marine climate that got HERS 39 and 38 without PV or HERS 2-12 and -9 with PV, with 6.5” SIP walls and 10.25” SIP roof; 11.75 ICF around slab, R-20 rigid foam under slab; radiant floor heat and passive design; air-to-water heat pump, fresh air intake with fan, triple-pane windows, 100% LED.