NOVELTY - System for producing phototrophic biomass comprises a green power generator for generating power, solar energy utilization system including a solar collector system, light energy supply system, and a solar energy conversion and converted energy supply system, and a carbon sequestering system electrically including a reaction zone containing a reaction.    USE - The system and operative biofuel are useful for producing phototrophic biomass (claimed).    ADVANTAGE - The method is environmentally-friendly and controllable.    DETAILED DESCRIPTION - System for producing phototrophic biomass comprises a green power generator for generating power, solar energy utilization system including a solar collector system (1100), light energy supply system, and a solar energy conversion and converted energy supply system, and a carbon sequestering system electrically including a reaction zone containing a reaction mixture that is operative for effecting photosynthesis upon exposure to photosynthetically active light radiation and coupled to the green power generator for receiving at least a fraction of the power generated by the green power generator for powering a phototrophic biomass production process that is operational within the carbon sequestering system, where operation of the carbon sequestering system is controlled by the same environmentally-friendly business organization, solar collector system is configured for receiving incident solar radiation and interacting with the received incident solar radiation to effect production of a light source-purpose received incident solar radiation fraction and an energy source-purpose received incident solar radiation fraction, the light energy supply system is configured for supplying photosynthetically active light radiation to the reaction zone and thereby effecting exposure of the reaction mixture to the photosynthetically active light radiation, and solar energy conversion and converted energy supply system is configured for converting the energy source-purpose received incident solar radiation fraction to converted energy and supplying the converted energy to the phototrophic biomass production process. INDEPENDENT CLAIMS are included for the following:    (1) method for producing phototrophic biomass, involves generating power with a green power generator, and supplying the generated power to power a phototrophic biomass production process; and    (2) use of an operative biofuel for producing phototrophic biomass or phototrophic biomass-derived upgraded biofuel by the above-cited method.    DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of system for producing phototrophic biomass.    Reaction zone (10)    LED lighting (202)    Dryer (206)    Photovoltaic cell (1002)    Mirror assembly (1006)    Parabolic dish (1008)    Light transmission component (1012)    Solar collector system (1100)