The article focuses on thermal energy storage (TES) as a cost-effective way of providing increased chilled water quantity to the Texas Medical Center as connected to the Thermal Energy Corporation (TECO) system. It describes the tall tank at 150 feet providing pressure on the chilled water return (CHWR), the chilled water supply (CHWS) and the energy efficiency gained. It also notes the specifications of the TES tank, the pricing and its operation and maintenance.