A district cooling system » produces chilled water at a central plant and delivers it through insulated underground pipes to many buildings. Each building connects through an energy transfer station instead of running its own chillers. Typical components include chillers, thermal storage, pumps, distribution piping and building interface units. Developers and building owners consider this model for dense mixed-use areas because it can free up roof space and simplify plant rooms. This guide explains how the network works, what a connected building needs to know, and why planners in hot climates evaluate it for large developments.