Thermoset fibre-reinforced composites, widely used now in different lightweight structures, could be manufactured by different processes like pultrusion, hand lay-up, filament winding, etc. Among these technological processes – pultrusion is more effective process with low operating costs. In time of pultrusion, fibres impregnated with resin move through the heated die and solidify into composite profile with a constant cross section like in the metallic die. Although the pultrusion sector demonstrates a healthy growth now, but a continuous increase in the cost of electricity could considerably reduce this movement or even stop it. To improve effectiveness and productivity of conventional pultrusion processes, preserving the quality of pultruded profiles, an optimisation of the parameters of pultrusion processes should be carried out.