A hydroelectric power system includes a plurality of paddle wheels, a plurality of electrical generators, a pumping system and a support structure. The support structure includes a water reservoir and at least one water channel contained in an inclined surface. The pumping system includes a plurality of inlet pipes and water pumps that pump water from a body of water into the water reservoir. The plurality of paddle wheels are rotatably retained along a length of the inclined surface. The paddle wheel includes tank paddles that are partially filled with water. The plurality of electrical generators are retained on the support structure. Each electrical generator includes a plurality of stator sections that are engaged or disengaged through a control device. Water in the water reservoir flows down at least one water channel and causes the plurality of paddle wheels to rotate, which causes the electrical generators to generate electricity.