+ A Colorado Man Has Built The Most Energy Efficient House in the State 7 years ago / Arts & Design, Blogs, Innovation, New Earth Media News, Technology, Alexa Erickson, Andrew Michler, Collective Evolution, Colorado, Energy, Energy Efficiency, Off-Grid, Passive House, Passivhaus, Sustainability Written by Alexa Erickson Have you heard of a Passive House? In the world of sustainability, it’s one...