Abstract: The power plant according to the present invention improves the efficiency of conversion from thermal energy to electrical energy, and is provided with a first thermoelectric conversion element that generates electric power by using a difference in temperature between a temperature inside a boiler combustion chamber and a temperature of water supplied to the boiler from a feed water heater, and a second thermoelectric conversion element installed on the feed water heater that generates electric power by using a difference in temperature between a temperature of steam supplied from a turbine and the temperature of water supplied from a condenser.