The impeller performance and energy utilization are closely related to the agitator design. In this article, the power characteristics of the novel cup-shaped-blade (CB) impellers were investigated by using the Newtonian fluid in a stirrer tank, considering the effects of shape parameters, angle of the blades, baffles, agitator speed and physical properties of working fluid. An accurate power correlation for the CB impellers was established. In addition, the CFD method was employed to simulate the power consumption and flow characteristics, and the calculated power value fitted well with the experimental value. The obtained results could provide the basis for the design and scale-up of the CB impellers.