Pumps-as-Turbine (PaT) Hydro Systems
A centrifugal pump, fitted with an impeller of the correct geometry, can operate in reverse rotation mode as a turbine. It works on the same principle as a Francis Turbine. The energy is recovered from the pressure differential (head), whilst the water flow is passed back in to the existing system.
The Pump as Turbine can be used to generate electricity to the grid network or be directed for local supply. Another option, rather than generate electricity is that the PaT is used to directly drive additional rotating equipment.