Hydroelectric power station for the generation of electrical energy from hydroelectric power - with at least one inlet pipe for supplying a motive water flow to the hydroelectric power station , - with at least one outlet pipe for discharging an outlet water flow , - with at least one water turbine for driving a generator to produce electrical energy, - with at least one water tank , wherein the water tank comprises an outlet and an inlet , - with at least one ejector , - with at least one water loop circuit , - wherein the at least one water turbine , the at least one water tank and the at least one ejector are fluidically connected by the at least one water loop circuit , - wherein the at least one inlet pipe is fluidically connected to the at least one ejector , - wherein the at least one outlet pipe is fluidically connected to the at least one water loop circuit , - wherein the at least one water loop circuit is configured to guide a circulating water flow from the at least one water tank , alongside the at least one ejector , through the at least one water turbine back into the at least one water tank , - wherein the at least one ejector in particular is configured to at least partly suck the circulating water flow from the at least one water tank , - wherein the at least one inlet pipe is configured to provide the motive water flow to the at least one water loop circuit through the at least one ejector , - wherein the current of the motive water flow substantially corresponds to the current of the outlet water flow and - wherein the at least one ejector is located at the outlet of the at least one water tank . - with at least one inlet pipe for supplying a motive water flow to the hydroelectric power station , - with at least one outlet pipe for discharging an outlet water flow , - with at least one water turbine for driving a generator to produce electrical energy, - with at least one water tank , wherein the water tank comprises an outlet and an inlet , - with at least one ejector , - with at least one water loop circuit , - wherein the at least one water turbine , the at least one water tank and the at least one ejector are fluidically connected by the at least one water loop circuit , - wherein the at least one inlet pipe is fluidically connected to the at least one ejector , - wherein the at least one outlet pipe is fluidically connected to the at least one water loop circuit , - wherein the at least one water loop circuit is configured to guide a circulating water flow from the at least one water tank , alongside the at least one ejector , through the at least one water turbine back into the at least one water tank , - wherein the at least one ejector in particular is configured to at least partly suck the circulating water flow from the at least one water tank , - wherein the at least one inlet pipe is configured to provide the motive water flow to the at least one water loop circuit through the at least one ejector , - wherein the current of the motive water flow substantially corresponds to the current of the outlet water flow and - wherein the at least one ejector is located at the outlet of the at least one water tank . <EOS>