区域供暖开发公司（DHDC）成立于1979年，是一家私营非营利组织，旨在规划和实施明尼苏达州圣保罗市的热水区域供暖系统。经过初步和最终可行性研究、充分的市场接受度和成功的融资，该项目于1983年3月开始建设。1983年9月27日开始为DHDC的第一批客户提供服务。24栋建筑正在接受温度为190华氏度（88摄氏度）至1200摄氏度（250华氏度）的中温热水能源。随着建设的进展，1984年和1985年将有大约50多座建筑连接到该系统。引文:研讨会，ASHRAE交易，1984年，第90卷，pt。密苏里州堪萨斯城2B

The District Heating Development Company (DHDC) was incorporated in 1979 as a private, nonprofit organization to plan and implement a hot water district heating system in St. Paul, Minnesota. Following preliminary and final feasibility studies, sufficient market acceptance, and successful financing, the project began construction in March 1983. Service to DHDC's first customers began on September 27, 1983. Twenty-four buildings are receiving medium temperature 190 – 250°F (88 – 1200°C) hot water energy. Approximately 50 more buildings will connect to the system in 1984 and 1985 as construction progresses.