POWER PLANT

The invention relates to a power plant with a combustion plant (10) having a combustion chamber (12) for generating steam and a supply air line (14) for supplying supply air into the combustion chamber (12), a turbine set (20) with a turbine (22) having a rotor (24) and a generator (26), a lubrication circuit (30) for lubricating and cooling the turbine set (20), wherein a cooling fluid circulates in the lubrication circuit (30), and a heat exchanger (40) for cooling the cooling fluid, wherein the heat exchanger (40) is arranged to heat the supply air.