An apparatus for generating power from over the road vehicular traffic and moving trains are disclosed. The apparatus include on or more hydraulic actuators, each of which has a piston at least partially slidably mounted in a fluid cavity contained therein. When a passing vehicle or train car engages the actuator, the weight of the vehicle pushes the piston into the fluid cavity and causes fluid to flow from the fluid cavity toward a turbine or other power conversion means. The flow causes the turbine to rotate, thereby producing useable energy.