The self-propelled harvesting vehicle has a chassis comprising a traveling mechanism capable of traveling on roads and fields and on whose front end a harvesting attachment is mounted. A driver's cab is mounted at the front of the chassis, and a superstructure with processing devices and storage compartments for storing the harvested crop, i.e. a biomass, is, when viewing in the longitudinal direction of the vehicle, mounted behind the driver's cab on the chassis. This superstructure is connected to the harvesting attachment via a conveying device for conveying the biomass. In order to be able to locally generate energy from the biomass during the harvesting of plants from which energy is generated or immediately after harvesting these plants, the processing devices and storage compartments, in the superstructure mounted on the chassis, depict a system for oiling the biomass. In doing this, raffinates such as gasoline, diesel or heavy oil are obtained on the mobile vehicle in the form of sources of energy for subsequent use.