Zach Greene is a Clean Energy Associate in WRI's U.S. Energy Program.

Prior to joining WRI, Zach served as Climate Advisor to the City of Philadelphia through the Bloomberg American Cities Climate Challenge. In this role, he supported the City’s Office of Sustainability in developing and implementing initiatives to reduce carbon emissions in the buildings and transportation sectors.

Zach has an extensive background in clean energy and local government. He was Program Director at The Solar Foundation for SolSmart, a solar designation and technical assistance program for cities and counties funded by the U.S. Department of Energy. Additionally, he served as Director of Communications for former mayor of Austin, Texas, Lee Leffingwell.

Zach holds a Master of Public Affairs from The Lyndon B. Johnson School of Public Affairs at the University of Texas at Austin, and two Bachelor of Arts degrees from The American University.

He lives in Philadelphia, and in his free time, Zach likes to read books in his local park and ride transit around the city.