influent exits the nozzle assembly 12 through the outlet ring 16 a shroud 52 and a diffuser 6 the diffuser 6 is internal to a suction housing 8 electrical power converted by the alternator not shown can be connected to a load with conventional wiring fig3 is a partially exploded perspective view of the nozzle assembly 12 according to one embodiment of the invention referring to the partially exploded view of fig3 the vanes 14 surround the turbine rotor 4 see fig4 in a circumferential array the vanes 14 are adjustably angled to direct the flow of influent into the rotor with a high degree of tangency the number of vanes 14 in the nozzle assembly 12 typically varies from 11 to 19 although other numbers of vanes 14 are conceived and can be used in the exemplary embodiment illustrated in the figures 16 vanes 14 are depicted turning away from the partially exploded view of fig1 and turning momentarily to fig2 and fig3 each vane 14 is positioned between the outlet ring 16 and an inlet ring 20 creating an adjustable nozzle 26 in the space between each vane the space bounded as well by the inlet ring 20 and the outlet ring 16 fig6 illustrates an adjustable vane 14 according to one embodiment of the invention and fig7 is a sectioned side view of the vane 14 illustrated in fig6 referring to fig6 and fig7 each vane 14 can have a slot.