NOVELTY - A modular integrated biofuel power generation system comprises a digester subsystem module including a digester configured to convert biomass into biogas; and an electric power generation subsystem module including an internal combustion engine and electrical generator configured for generating electricity; the components of each module being mounted on individual self-supporting and transportable structural platforms.    USE - The system is used for modular integrated biofuel power generation.    ADVANTAGE - The power generation system above integrates the design, construction and manufacture of a complete biofuel electric generating plant intended to achieve Sow-cost and scale-ability. The power generation system includes various subsystems and components which are integrated together to create a system for conversion of biomass to electricity. The system may include provisions for converting biomass into biogas and/or biodiesel into a single system. The individual subsystems for converting the biomass into biofuel, biofuel conditioning, power generation, and others may be modularized and pre-manufactured for assembly into a complete power generation package. These modular subsystems may be mounted on single support platform in some arrangements which are transportable as a single unit.    DETAILED DESCRIPTION - A modular integrated biofuel power generation system comprises a digester subsystem module including a digester configured to convert biomass into biogas; and an electric power generation subsystem module including an internal combustion engine and electrical generator configured for generating electricity, the internal combustion engine fluidly coupled to and configured to burn the biogas produced by the digester; the components of each module being mounted on individual self-supporting and transportable structural platforms; where the modules are fluidly coupled together on power generation site after placement of each module. An INDEPENDENT CLAIM is a method for forming a modular integrated biofuel power generation system by selecting a factory prefabricated self-supporting first digester subsystem module having a first capacity from prefabricated self-supporting digester subsystem modules each having a different capacity, the first digester subsystem module including a digester configured to convert biomass into biogas, where the first digester subsystem module comprises a transportable structural equipment platform configured to be lifted as a single unit; selecting a factory prefabricated self-supporting first biogas treatment subsystem module having a first capacity from prefabricated self-supporting biogas treatment subsystem modules each having a different capacity, the first biogas treatment subsystem module configured to refine the biogas produced by the digester, where the first biogas treatment subsystem module comprises a transportable structural equipment platform configured to be lifted as a single unit; selecting a factory prefabricated self-supporting first electric power generation subsystem module having a first electrical output rating from prefabricated self-supporting power generation subsystem modules each having a different electrical, output rating, the first electric power generation subsystem module including an internal, combustion engine and electrical generator configured for generating electricity, where the first power generation subsystem module comprises a transportable structural equipment platform configured to be lifted as a single unit; transporting the first digester subsystem module, first biogas treatment subsystem module, and first electric power generation subsystem module from a factory to a remote power generation site location; emplacing the firs digester subsystem module, first biogas treatment subsystem module, and first electric power generation subsystem module at the power generation site; fluidly coupling the digester to the first biogas treatment subsystem module via a field ran flow conduit; and fluidly coupling the internal combustion engine to the first biogas treatment subsystem module via a field run flow conduit.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of an integrated biofuel power generation system.    Digester subsystem (30)    Biogas treatment subsystem (40)    Biogas storage subsystem (50)    Electric generation subsystem (60)    Fuel input conveyor (70)