AbstractAmong U.S.‐China EcoPartnerships, the PHL‐TEDA EcoPartnership is unique in its design as an open platform to facilitate collaboration among businesses, local governments, universities and non‐governmental organizations (NGO). On the U.S. side, the platform consists of China Partnership of Greater Philadelphia (CPGP, a 501c3 non‐profit) and its public sector partner, the Commerce Department of the City of Philadelphia. The objective of this collaboration is to bring to scale sustainable‐city‐type BE Better technologies (built environment technologies that are more energy‐efficient, smarter and healthier) in China and, by doing so, to promote sustainable economic development in the U.S. The mechanism for scaling these BE Better technologies is through China's national‐level industrial parks. The initial stage focuses on China's northeastern Jing‐Jin‐Ji region (comprising Beijing, Tianjin and Hebei Province) through collaborations with Green Development League‐member National Economic‐Technological Development Zones (NETDZ) in Beijing, Tianjin and Langfang. The larger goal is to position for second‐stage, nation‐wide expansion of the BE Better model through the Green Development League's 36 member‐NETDZs nationwide and through the Ministry of Commerce's national Eco Park program.