In 1982, the San Antonio Airport contracted Natgun Corporation to construct a 0.5 MG thermal energy storage (TES) tank for the purpose of saving energy costs, and also to defer the capital expenditures associated with adding additional chiller plant equipment. The tank was originally designed for a maximum of 4,500 ton-hours of useable thermal energy storage capacity. The exterior of the tank is insulated to prevent heat loss.

Chilled Water Thermal Storage