The first phase project (2×300MW unit) was approved by the National Development and Reform Commission on July 6th, 2008. Construction started on July 23rd, 2008. On September 8th, 2008, Hebei Datang International Zhangjiakou Thermal Power Co., Ltd. was registered. The dynamic total investment of the first phase project is about 2.94 billion yuan, and the reclaimed water from the urban sewage treatment plant will be used as the production water source, and high-efficiency electrostatic dust removal and flue gas desulfurization and denitrification devices will be built simultaneously. The two units were put into commercial operation on February 1 1 day, 2009 and February 10, 2065438 respectively. The annual heating is 6910.6 million Ji Jiao, and the central heating area is10.2 million square meters, accounting for 70% of the total central heating area in Zhangjiakou.