The building features many sustainable strategies, including a vegetated roof, raised floor for air delivery under individual control, operable windows, and daylighting -- all justified through rigorous cost-benefit analysis. Employees thrive in the new building. The openness of the design, circulation of people, and urbane common spaces encourage a strong sense of community. The unique advanced integration of building systems was recognized by Pacific Gas and Electric as the second-most energy-efficient building in the state, one that exceeds California's strict energy requirements by 30%.
--http://www.mcdonoughpartners.com