According to the latest report compiled by ASU's Sustainability Solutions Services, a program within the Global Institute of Sustainability’s Rob and Melani Walton Sustainability Solutions Initiatives, the City of Phoenix has not only reached its greenhouse gas emissions reduction goal, but has exceeded it. The goal, set in 2008, was to reduce emissions from city operations by 5 percent below the 2005 levels by 2015. By 2012, the city managed to reduce emissions by 7.2 percent three years ahead schedule.

"This is great for Phoenix and I’m very excited to see that we may be able to double or even possibly triple the reduction of our greenhouse gas emissions by 2015," says Mayor Greg Stanton. "We are making Phoenix a cleaner and healthier place to live and work."

City advancements include energy-efficient street lighting, landfill methane capture systems, alternative fuels, wastewater upgrades, solar power projects, and building retrofits.