Management device, and a control method

PV-PCS (3) it is, PV panel (2) outputs electric power generated. EV-PCS (5) is charged with power output from the commercial power system supplied by (PS) power or PV-PCS (3) to the EV (6). PV-PCS (3) receives restriction information (13) from directly or indirectly server (12). Then, in a limited period when power output from the PV-PCS (3) is restricted, the management device (10) obtains a suppression power generation amount from the power generation amount of simplified manner estimated PV panel (2), this suppression power the amount as the upper limit, controls the PV-PCS (3) such that the charging power increases.