Staber gives alternative energy users the most efficient washer available for handling their laundry needs. The Staber washer runs very efficiently, operating on only 110–150 watt-hours of electricity per wash load. It draws about 5-6 amps during the wash cycle, and surges to about 11 amps momentarily when the motor starts. We recommend a minimum of a 1,500 watt inverter to be used with our Staber washer, with adequately charged batteries and an output of between 115-120VAC and 60Hz. to operate correctly. Unlike other washing machine manufacturers, the warranty is not voided when used on a solar power source. This, while using an average of only 15 gallons of water per load make the Staber the most energy efficient washer available and the best choice for consumers living "off-grid."