NOVELTY - The system has a separation and pressure reduction subsystem including a mixing valve combining fully condensed intermediated pressure lean solution stream (S1) and intermediated pressure rich vapor stream (S13) forming intermediated pressure rich solution stream (S3). Another mixing valve combines lower pressure leaner liquid stream and lower pressure richer solution stream (S17). A condensation subsystem includes a condenser to fully condense lower pressure lean solution stream forming the lower pressure fully condensed lean solution stream.    USE - System for generating power from lower temperature heat source stream e.g. multi-component working fluid such as ammonia and water mixture, hydrocarbon mixture, freon mixture and hydrocarbons and freons mixture (all claimed), from a initial geothermal well and a higher temperature heat source stream from a production geothermal well.    ADVANTAGE - The system utilizes the streams derived from the initial and production wells in an efficient manner. The system is designed such that temperature differences between heat source streams and working fluid streams in heat exchange units are reduced, so that thermodynamic irreversibility in process of heat transfer from the heat source streams to the working fluid streams can be reduced and the system has higher Law efficiency as compared to a system that utilizes only higher temperature heat source, thus improving thermal efficiency of the system.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for generating power from lower temperature heat source stream from initial geothermal well and higher temperature heat source stream from a production geothermal well.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a power system for extracting energy from a production geothermal well and an initial geothermal well.    Point indicating fully condensed lean solution stream having parameters (P1)    Fully condensed intermediated pressure lean solution streams (S1, S2, S20)    Pressure rich solution streams (S3, S6, S15, S16)    Pressure rich vapor stream (S13)    Lower pressure richer solution stream (S17)