A method and configuration suited to feeding a water-containing fuel such as peat or brown coal into a pressurized space such as a pressurized dryer or a high-pressure gasifier. A fuel with a high moisture content requires drying in a dryer prior to gasification or combustion. In the dryer, the fuel is dewatered, whereby the separated water is discharged as steam from the dryer. The generated steam is separated from the fuel flow exiting the dryer and it can be routed as injection steam to a gas turbine. When a portion of the steam extracted from the fuel flow exiting the dryer is fed into the fuel entering the dryer or to a heat exchanger, which is employed for heating the fuel flow, a fuel of higher moisture content can be fed into the dryer, or alternatively, the moisture content of the fuel can be increased to improve the feed of the fuel. The method imparts no reduction of the economy of the energy generation process.