This task aim to produce the hydraulic and mechanical design of the Francis turbine. This requires a parametric design tool where the main variable design parameters will be: material quality, material thickness, reaction ratio, rotational speed, runner diameters and the energy conversion along the streamlines in the turbine runner. Such a design tool is not available, so it has to be developed in this task. The new turbine design will focus on the geometry of the guide vanes, runner and a new type of guide vanes in the draft tube. The design parameters will be programmed in to a design tool where the parametric design study can be carried out. The design tool will be programmed in such a way that it can communicate with the CFD- and FSI-analysis software Ansys. The design parameters will be used as the first input(ramping rate, flow rate, etc.) from WP2 WP4 and WP5.