The 17^th International Symposium on District Heating and Cooling is the world’s gathering place for district heating and cooling experts from academia and industry. It is first time taking place in UK. It is where new networks are built, and latest knowledge is shared: in the event halls, in and around sessions, along with the industry tour and in various special events. The 17^th International Symposium on District Heating and Cooling focus on solutions, innovations and best-practice examples that make district energy a cornerstone of a sustainable energy future.