AbstractThe Greater Philadelphia (PHL)-Tianjin Economic-technological Development Area (TEDA) collaboration joined the U.S.-China EcoPartnerships program in July 2014 to jumpstart innovative ″Urban Clean Energy Infrastructure″ solutions in both regions. This unique combination of real-world technology demonstrations and product showcases will get viable new infrastructure breakthroughs quickly into Chinese and U.S. markets once the EcoPartnership is fully underway. The past year has been spent down-selecting priority technologies and demonstration sites, and the partnership is getting ready to initiate its initial three pilot projects. Urban clean energy infrastructure is a sizable, and yet largely untapped opportunity. The PHL-TEDA EcoPartnership can serve as an important sub-national resource to assist municipalities integrate, at the practical level, their U.S.-China Sustainable City planning efforts with commercially relevant, on-the-ground urban infrastructure project experience.