California Leads In Net-Zero Homes As Costs Drop

Published by CleanTechnica: Half a dozen California cities are hosting enough net-zero homes to place the state in first place nationally among other states like Arizona where the net-zero trend is catching on rapidly, both among legislators and among leading homebuilders. This trend is expected to accelerate markedly over the coming decade, as the cost of adding net-zero features, including solar, drops by 50%. ACEEE last year initiated a partnership with the New Buildings Institute (NBI) to quantify state building energy code performance more accurately. The two debuted a metric based on NBI’s Zero Energy Performance Index (zEPI) and Pacific Northwest National Laboratory (PNNL) data.