NOVELTY - A multi-system bioenergy apparatus comprises an electric generating apparatus (201) to produce flue gasses; at least one anaerobic digester (202) adapted to supply biogas to the electric generating apparatus; and at least one bioreactor to receive flue gasses from the electric generating apparatus.    USE - For generating electricity.    ADVANTAGE - The apparatus and methods improve the economics of individual energy production facilities by integrating them operationally and geographically. The bioreactor is designed to grow biomass in an efficient and timely manner. Harvested biomass provides various products such as biomass oil and biomass solids.    DETAILED DESCRIPTION - A multi-system bioenergy apparatus comprises an electric generating apparatus (201) to produce flue gasses; at least one anaerobic digester (202) adapted to supply biogas to the electric generating apparatus; and at least one bioreactor to receive flue gasses from the electric generating apparatus. The apparatus further comprises at least one agricultural facility adapted to supply feedstock materials to the anaerobic digester; an ethanol production facility configured to receive algae solids from the bioreactor; and a bio-diesel production facility configured to receive algae oil from the bioreactor. The bioreactor is a closed system photobioreactor. An INDEPENDENT CLAIM is included for producing energy involving digesting agricultural waste using anaerobic digestion to produce a methane gas supply and a nutrient rich water supply; burning the methane gas supply to produce steam; growing algae using the nutrient rich water supply; separating the algae into components including algae oil and algae solids; producing bio-diesel fuel using at least a portion of the algae oil; and producing ethanol using at least a portion of the steam.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the multi-system bioenergy apparatus.    Electrical generating poser plant (201)    Anaerobic digester (202)    Waste stream (204)    Processing operation (208)    Dairy operation. (219)