wikipedia

The Philadelphia region is poised to become one of the nation’s leaders in fostering a more energy-efficient building stock. While President Barack Obama's comments in last month's State of the Union speech highlighted the administration’s commitment to energy efficiency as an important strategy to mitigate climate change, public and private stakeholders in Philadelphia have already joined together to contribute scalable solutions and provide leadership for this challenging problem.

Philadelphia's emergence as a sustainability leader began with the election of Mayor Michael A. Nutter in 2008. During his campaign, Nutter pledged to make Philadelphia the "Greenest City in America," and he followed through with his commitment by creating the city’s first...