The aim of this work was to elaborate the construction of a mobile machine implementing the process of briquetting with the curling method. The SolidWorks computer software was to design the construction of the mobile machine. As a result of the construction works, a machine attachable to the tractor field machinery was constructed. It consisted of seven main assemblies, which will be driven mechanically, hydraulically and electrically. A mechanical drive will be drawn with a tractor and transferred by the PTO. Moreover, hydraulic pumps will be driven from this box, which deliver hydraulic power to driving motors and servo-motors. The tractor electrical system will be powered by auxiliary drives. The expected capacity of the machine is approx. 1,5t·h-1, the power demand approx. 40kW. The mobile machine developed in PIMR, which performs the process of briquetting of stalk materials with the curling method constitutes a part of activities to increase the use of straw for energy purposes.