行政院經濟建設委員會
In December 2008, the MOTC announced that the system would be extended to Zhongli Sports Park , but was later changed to Zhongli Station in order to facilitate transfers to TRA services. After the Zhongli Sports Park station was canceled, MOTC changed it to having the Taoyuan Metro Green Line line to run to Zhongli Sports park instead, and to have the Green Line extend to Zhongli Station. The extension includes one entirely new station, , scheduled to open in 2022. The full extension to Zhongli is scheduled for completion in 2028. A 2011 report by the Council for Economic Planning and Development estimated the total project cost at NT$13.801 billion, including the extension as well as development of the surrounding areas.