NOVELTY - A mobile biomass pelletizing system (20A) comprises modules for reducing, blending, drying, conditioning, and pelletizing biomass, sensors for determining composition, moisture, and temperature information about the biomass contained in modules during use, a control system in operable communication with modules and sensors for receiving the composition, moisture, and temperature information, adjusting operating parameters of module and automatically moving the biomass between modules in response to the information received, where the modules are disposed within a single, portable housing.    USE - As mobile biomass pelletizing system (claimed), used to make feedstuffs for pets and livestock, also used to compact biomass for use in the energy industry.    ADVANTAGE - The mobile biomass pelletizing system improves on current stationary pelletizing operations in energy real-time adaptability, efficiency, maintainability, ease of operation, and operating costs. The system is mobile, energy efficient, and easy to set up and, as a result, reduces the logistical barriers for conversion of biomass to pellets in situ and allows conversion of wide range of biomass materials. The system includes automated process controls for better product consistency and reorganizes the current process steps to improve overall energy efficiency and reduce in-process time requirements. The system improves upon the equipment that has been conventionally used to carry out biomass processing and uses process energy streams to reduce the overall cost of production. As a result, the system is self-contained and mobile for transport to sources of biomass at the point of origin.    DETAILED DESCRIPTION - A mobile biomass pelletizing system (20A) comprises modules for reducing, blending, drying, conditioning, and pelletizing biomass, sensors for determining composition, moisture, and temperature information about the biomass contained in the modules during use, a control system in operable communication with the modules and sensors for receiving the composition, moisture, and temperature information, adjusting operating parameters of module and automatically moving the biomass between modules in response to the information received, where the modules are disposed within a single, portable housing, where during use pellets having a density within a selected range are produced from multiple batches of biomass feedstock varying in composition and moisture content. INDEPENDENT CLAIMS are included for the following:    (1) system for in situ processing of biomass material to pellets comprising an input module for receiving biomass, reducer module for reducing particles size of the biomass, a blender module for homogenizing the biomass, a dryer module for removing moisture from the biomass, conditioner module for adding moisture to the biomass, pellet mill module for converting the biomass into pellets, cooler module for optionally cooling the biomass or the biomass pellets, an output module for exporting the biomass pellets from the system, an engine in operable communication with and for powering at least one of the input, reducer, blender, dryer, conditioner, pellet mill, cooler, or output modules, where each module and the engine are disposed within a single housing; and    (2) process for in situ conversion of biomass to pellets involving receiving biomass material, reducing the size of the biomass material after it has been receiver, blending the biomass material after it has been reduced in size, drying the biomass material after it has been blended, conditioning the biomass material after it has been dried, pelletizing the biomass material to pellets after it has been conditioned, cooling the pellets after they have been extruded, and offloading the pellets after they have been cooled.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of mobile biomass pelletizing system.    Mobile biomass pelletizing system (20A)    Input device (21A)    Crusher/grinder (22A)    Drier (23)    Pellet mill (24)    Cooler (25)    Diesel generator (26a)    Gas tank (27)    Output container (28A)    Insulation (29)    Heat exchanger network (30)