Abstract: A hydraulic power system for a utility vehicle having an engine with a crankshaft. The system features first and second rotationally-driven power generating devices, one of which is a hydraulic pump and the other of which is an alternator and one of which is a hydraulic pump. The first device has a first rotational input for operative coupling to the crankshaft for driven rotation thereby. A secondary shaft has an input end portion arranged for rotational coupling to a rotationally driven member of the first device and an output end portion arranged for rotational coupling to a second rotational input of the second device for driving thereof under driven operation of the first rotationally-driven power generating device by the crankshaft. Higher power output of increased reliability is provided over prior art add-on hydraulic solutions using electric-over-hydraulic power packs.