Apologies to Paul Simon, but when I looked at the long list of design ideas I compiled while at the International Builders’ Show in Orlando, I thought I’d try to mention 50 of them—a nice round num
Precast concrete duplex in Edmonton, Alberta achieves net zero
Insulation values are approximately three times the amount of an average home
A residential duplex in Edmonton, Alberta constructed by Habitat for Humanity featuring precast concrete construction has achieved net zero energy status. The building benefits from concrete’s ability to retain thermal mass. Precast panels have an insulation rating of R44 for the walls, and R88 for the roof, about three times the insulation of a typical home. The structure produces its own heat and hot water with a geothermal system, and photovoltaic panels provide electricity. Over the next two years, researchers from MIT will monitor the home’s energy performance.