Top 10 Green Buildings, 2011

First Unitarian Society Meeting House, Madison, Wis.
Kubala Washatko Architects Inc.
The 20,000-sq.-ft. (1,850 sq m) addition to this historic Frank Lloyd Wright–designed meeting house is 40% more efficient than a comparable facility. The addition features recycled content and locally sourced materials, along with CO₂ sensors that trigger a ventilation system to maximize energy savings when spaces are unoccupied. The addition has a vegetated roof, and individual lighting controls are in all the building areas.

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