The K&H Heated Thermal Bowl holds 1 ½ gallons of water. The thermostatically controlled Thermal Bowl is the answer to freezing water bowls. It keeps water from freezing even in sub zero temperatures. Just plug in the Thermal Bowl and water will remain open all winter. All electronics are safely sealed inside and the 5 ½ foot cord is steel wrapped to prevent abrasion. It is only 25 watts for extremely low energy consumption.