The HydroPower Recycle System (HPRS) is implemented in water tanks in buildings, which are connected to supply water pipes from a pumping system on the ground. All water sent to the tank passes through the HPRS, which is a hydro power concept system (with a turbine connected to a generator). It is used to recycle the moving water (kinetic energy) to produce electricity, thus generating renewable energy. The data will be transferred and managed in a control system. Clients can get the information in a mobile app. The HPRS will not influence the water supply, so the residents in the building will not note any difference, but they can enjoy the benefits of the generated power.

The HPRS is suitable for all Hong Kong buildings, as it can generate a huge amount of renewable energy and profit from a previously ignored source.