A system for increasing energy output of a fluid substance, comprising: at least one fuel activation and energy release apparatus, comprising: a fluidly sealable reactor chamber, adapted to withstand a predetermined fluid pressure and temperature; a fluid injection port, adapted to provide a one-way fluid communication from an external fluid reservoir to said reactor chamber; a fluid ejection port, adapted to provide a one-way fluid communication from said reactor chamber to an external region, so as to controllably release said fluid substance from said reactor chamber; at least one first electromagnetic radiation waveguide, having a first waveguide input port and a first waveguide output port, operably coupled within said reactor chamber and adapted to couple electromagnetic radiation of a predetermined first wavelength to a fluid substance injected into said reactor chamber; at least one second electromagnetic radiation waveguide, having a second waveguide input port operably coupled to said reactor chamber, adapted to couple electromagnetic radiation of a predetermined second wavelength to a fluid substance injected into said reactor chamber; a tunable EMR generator, operably coupleable to said at least one first electromagnetic radiation waveguide of said at least one fuel activation and energy release apparatus, wherein said EMR generator is a microwave generator and the generated electromagnetic radiation has a predetermined first wavelength between 1 mm and 1 meter at a respective frequency spectrum of 300 GHz to 300 MHz; an ancillary EMR source, operably coupleable to said at least one second electromagnetic waveguide input port, wherein the generated electromagnetic radiation has a predetermined second wavelength between 700 nm and 1 mm at a respective frequency spectrum of 430 THz to 300 GHz; a working medium reservoir, fluidly coupleable to said reactor chamber of said fuel activation and energy release apparatus and adapted to store and supply a working medium; a heater assembly, fluidly coupleable between said working medium reservoir and said reactor chamber, and adapted to transfer energy to said working medium, so as to provide an energised fluid substance at a predetermined temperature and pressure into said reactor chamber of said fuel activation and energy release apparatus. at least one fuel activation and energy release apparatus, comprising: a fluidly sealable reactor chamber, adapted to withstand a predetermined fluid pressure and temperature; a fluid injection port, adapted to provide a one-way fluid communication from an external fluid reservoir to said reactor chamber; a fluid ejection port, adapted to provide a one-way fluid communication from said reactor chamber to an external region, so as to controllably release said fluid substance from said reactor chamber; at least one first electromagnetic radiation waveguide, having a first waveguide input port and a first waveguide output port, operably coupled within said reactor chamber and adapted to couple electromagnetic radiation of a predetermined first wavelength to a fluid substance injected into said reactor chamber; at least one second electromagnetic radiation waveguide, having a second waveguide input port operably coupled to said reactor chamber, adapted to couple electromagnetic radiation of a predetermined second wavelength to a fluid substance injected into said reactor chamber; a fluidly sealable reactor chamber, adapted to withstand a predetermined fluid pressure and temperature; a fluid injection port, adapted to provide a one-way fluid communication from an external fluid reservoir to said reactor chamber; a fluid ejection port, adapted to provide a one-way fluid communication from said reactor chamber to an external region, so as to controllably release said fluid substance from said reactor chamber; at least one first electromagnetic radiation waveguide, having a first waveguide input port and a first waveguide output port, operably coupled within said reactor chamber and adapted to couple electromagnetic radiation of a predetermined first wavelength to a fluid substance injected into said reactor chamber; at least one second electromagnetic radiation waveguide, having a second waveguide input port operably coupled to said reactor chamber, adapted to couple electromagnetic radiation of a predetermined second wavelength to a fluid substance injected into said reactor chamber; a tunable EMR generator, operably coupleable to said at least one first electromagnetic radiation waveguide of said at least one fuel activation and energy release apparatus, wherein said EMR generator is a microwave generator and the generated electromagnetic radiation has a predetermined first wavelength between 1 mm and 1 meter at a respective frequency spectrum of 300 GHz to 300 MHz; an ancillary EMR source, operably coupleable to said at least one second electromagnetic waveguide input port, wherein the generated electromagnetic radiation has a predetermined second wavelength between 700 nm and 1 mm at a respective frequency spectrum of 430 THz to 300 GHz; a working medium reservoir, fluidly coupleable to said reactor chamber of said fuel activation and energy release apparatus and adapted to store and supply a working medium; a heater assembly, fluidly coupleable between said working medium reservoir and said reactor chamber, and adapted to transfer energy to said working medium, so as to provide an energised fluid substance at a predetermined temperature and pressure into said reactor chamber of said fuel activation and energy release apparatus.