NOVELTY - The system (100) i.e. carbon plume geothermal system, has a set of production wells (160), each having a production well reservoir opening (172). A non-water based working fluid i.e. supercritical carbon dioxide, is provided to a set of injection wells (136) at a lower temperature and is exposed to another temperature for producing a heated non-water based working fluid entering each of openings. An energy converting apparatus is connected to each of the two wells and converting a thermal energy contained in the heated non-water based working fluid to electricity and heat.    USE - Carbon dioxide-based geothermal energy generation system i.e. carbon plume geothermal system, for sequestering and storing excess carbon dioxide.    ADVANTAGE - The system is efficient, economical and relatively simple in operation, and provides electricity from a geothermal source at much lower temperatures. The system generates geothermal energy in quantities sufficient to provide electricity and heat for on-or off-site, thus limiting the use of fossil fuels such as natural gas, and reducing operational costs. The system utilizes the supercritical carbon dioxide as the working fluid for producing renewable energy, thus enhancing the efficiency of geothermal power plants during colder months, and potentially allowing electricity production in a low heat flow regions in highly efficient manner. The geothermal power plants are compact than water-based versions, thus reducing the plant's spatial and environmental footprint.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for sequestering and storing excess carbon dioxide in a carbon dioxide-based geothermal energy generation system i.e. carbon plume geothermal system.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a carbon dioxide-based geothermal energy generation system.    Carbon dioxide-based geothermal energy generation system (100)    Injection wells (136)    Expansion device (142)    Production wells (160)    Production well reservoir openings (172)