A vehicle-to-building power system allows a vehicle to power a building. The system includes a power-receiving unit remote from a vehicle. The unit includes a cable configured to mate with a vehicle port and support high-voltage electrical loads between the vehicle and the power-receiving unit. The unit further includes a high-voltage inverter configured to convert a direct current (DC) power supplied from a vehicle battery to an alternating current (AC) power compatible with a building electrical system, and a high-voltage DC bus electrically connected to the inverter. The bus has one or more contactors that electrically connect the cable to the high-voltage inverter when closed and electrically disconnect the cable and the high-voltage inverter when open.