US Patent 9203263 Methods and systems for providing an appliance hybrid mode

A hybrid energy management method and system which provides a main power supply and a secondary power supply. The main power supply is electrically coupled to the utility power grid, while the secondary power supply is electrically isolatable from the utility power grid. A switch is provided to selectably power the appliance through the main alternating current power supply when the utility is not in a reduced demand operating mode and to selectably power the appliance through the secondary alternating current power supply when the utility is in a reduced demand mode.