Fuente: WIPO "sustainability" A system includes a controller configured to request power-source data associated with a plurality of power sources powering a device, assigning sustainability factors associated with the power-source data, determine a sustainability indicator based on the plurality of sustainability factors, and output the sustainability indicator. The system further may include a display configured to display the sustainability indicator. The display may include a user interface of a power device or a remote device. The remote device may include one of a smartphone, tablet, laptop, notebook or personal computer having a monitor. The sustainability indicator may include one or more icons representing a source of electricity based on the plurality of sustainability factors.