NOVELTY - The system (10) has multiple mechanical devices (12) comprising energy capturing blades (18) and a pump (20). The blades are connected to the pump to power the pump, and a power generation arrangement (14) is fixed with the mechanical devices. Each mechanical device includes a device output conduit (40) for outputting a pressurized output flow (42) and a device input conduit (44) to receive a low pressure flow (46). The power generation arrangement comprises multiple hydraulic generators, and each mechanical device is connected to the hydraulic generators.    USE - Power generation system such as hydroelectric power plant or hydraulic power plant.    ADVANTAGE - The system maintains revolutions per minute (RPM) of the hydraulic generators at or near some fixed value, thus maximizing energy output efficiency and the generator RPM and voltage remain at or nearly constant. The system maintains the generator performance at the optimum RPM by shutting off the hydraulic generators or varying the displacement of hydraulic motors when wind speed or water current speed decreases or the pressure drop decreases. The hydraulic generators in common locations allow the system to work in different operating modes.    DETAILED DESCRIPTION - The pump is designed as an off-the-shelf radial piston pump, a fixed displacement pump and a variable displacement pump. The hydraulic generators are designed as off-the-shelf axial piston hydraulic generators, fixed displacement hydraulic generators and variable displacement hydraulic generators. The blades are designed as horizontal axis wind turbine towered blade. An INDEPENDENT CLAIM is also included for a power generation method.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic side view of a power generation system.    Power generation system (10)    Mechanical devices (12)    Power generation arrangement (14)    Energy capturing blades (18)    Pump (20)    Device output conduit (40)    Pressurized output flow (42)    Device input conduit (44)    Low pressure flow (46)