Active vehicle suspension

A method of on-demand energy delivery to an active suspension system, comprising:

• disposing an active suspension system in a vehicle between a wheel mount and a vehicle body, the active suspension system comprising an actuator body, a piston disposed in the actuator body, a hydraulic pump, an electric motor, a plurality of sensors, an energy storage facility, and a controller;
• detecting a wheel event;
• and
• based on the detected wheel event, sourcing energy from the energy storage facility and delivering it to the electric motor to provide an active force, using the hydraulic pump, to the piston in response to the wheel event, wherein the active force moves the piston in a compression direction in at least one operating mode.