Passive Acceptance: 7 Energy-Efficient Homes

Passive heating and cooling are both cost-efficient measures that ease a new residence's burden on the earth. From super-green homes to certified Passive Houses, here are six great examples of the genre. Slideshow

South-facing windows, bedrooms situated at each end of a simple gabled structure, and a sleeping loft maximize both energy efficiency and an open, airy feeling in this Rhode Island vacation home by ZeroEnergy Design. Photo by Greg Premru.