A power generation system operating on a working fluid, comprising: an inlet (CP-1A) receiving a first portion of the working fluid; a power generation component comprising a power generator (T/G) receiving a second portion of the working fluid; a vacuum pump system fluidly connected to the inlet and the power generation component to receive a combined working fluid, wherein the combined working fluid comprises a combination of the first portion of the working fluid and the second portion of the working fluid; and a connecting pipe fluidly connected to receive the combined working fluid from the vacuum pump system and transmit the combined working fluid to a point of discharge at a low head, wherein the vacuum pump system is a venturi system comprising: a convergent inlet cone (Con. P.); a restriction fluidly connected to the convergent inlet cone; and a divergent outlet cone (Div. P.) fluidly connected to the restriction, wherein the combined working fluid is received, and wherein the connecting pipe is fluidly connected to receive the combined working fluid from the divergent outlet cone and transmit the combined working fluid to the point of discharge at the low head, characterized in that: the inlet receives the first portion of the working fluid from a high head; the power generation component receives the second portion of the working fluid from an intermediate head; the convergent inlet cone is fluidly connected to the inlet and a low pressure inlet is fluidly connected to the power generation component and the restriction. an inlet (CP-1A) receiving a first portion of the working fluid; a power generation component comprising a power generator (T/G) receiving a second portion of the working fluid; a vacuum pump system fluidly connected to the inlet and the power generation component to receive a combined working fluid, wherein the combined working fluid comprises a combination of the first portion of the working fluid and the second portion of the working fluid; and a connecting pipe fluidly connected to receive the combined working fluid from the vacuum pump system and transmit the combined working fluid to a point of discharge at a low head, wherein the vacuum pump system is a venturi system comprising: a convergent inlet cone (Con. P.); a restriction fluidly connected to the convergent inlet cone; and a divergent outlet cone (Div. P.) fluidly connected to the restriction, wherein the combined working fluid is received, and a convergent inlet cone (Con. P.); a restriction fluidly connected to the convergent inlet cone; and a divergent outlet cone (Div. P.) fluidly connected to the restriction, wherein the combined working fluid is received, and wherein the connecting pipe is fluidly connected to receive the combined working fluid from the divergent outlet cone and transmit the combined working fluid to the point of discharge at the low head, characterized in that: the inlet receives the first portion of the working fluid from a high head; the power generation component receives the second portion of the working fluid from an intermediate head; the convergent inlet cone is fluidly connected to the inlet and a low pressure inlet is fluidly connected to the power generation component and the restriction. the inlet receives the first portion of the working fluid from a high head; the power generation component receives the second portion of the working fluid from an intermediate head; the convergent inlet cone is fluidly connected to the inlet and a low pressure inlet is fluidly connected to the power generation component and the restriction.