Electric power information system

Display means (19) comprising: a display unit (192), which is mounted on an electric vehicle (EV) and is operated by supplying electric power, display information related to the power supplied to the electric vehicle (EV); determining unit (S18), its power to (EV) supplied to the electric vehicle is included green electric judge; and a display control unit (S20, S22), which comprises the green electrical power generated by (S18) determining determination unit to the electric vehicle (EV) supplied in a case (S18: "yes"), the display unit (192) performs control so that the display color becomes green, not including the green electrical power generated by (S18) determining determination unit to the electric vehicle (EV) supplied case lower (S18: "No"), the display unit (192) performs control so that the display color becomes red. By identifying the driver to display a color display unit (192) is green case, the feeling of satisfaction for the use of green electricity and contributed to environmental protection of. Arouse awareness and hope to use this green electricity through such a sense of satisfaction, as a result, promote the use of green electricity.