NOVELTY - Producing ethanol from biomass, comprises: producing ethanol from biomass at a first site with a fermenter; transporting the fermenter to a second site; and producing ethanol from biomass at the second site with the fermenter.    USE - The method is useful for producing ethanol and a product from biomass that is cellulosic material, lignocellulosic material, corn, sugar cane, sugar beets, trees, shrubs, grasses, phytoplankton, zooplankton, algae, macroalgae, seaweed, corn husks, bushes, lumber, wood waste, pulp, cotton, wool, linen, paper, newspapers, corrugated containers, mixed paper, computer printouts, white office paper, printing plant scraps, leaves, twigs, grass, plant cuttings, branches, trees, vines, sewage and/or agricultural waste, where: the first or second products comprise ethanol, and are energy, ethanol, n-butanol, alcohols, hydrocarbons, gasoline, natural gas, methane, biodiesel, hydrogen, electricity, polymers, nutrients, proteins, biomolecules, pharmaceuticals, pharmaceutical products, fertilizer, medial products and/or chemical products; the first or second products comprise at least one biomolecule consisting of nucleic acids, proteins, lipids, steroids, natural products, metabolic products, nucleotides, nucleosides, fats, amino acids and/or peptides; the cellulosic or lignocellulosic biomass material is corn, sugarcane, sugar beets, trees, shrubs, grasses, phytoplankton, zooplankton, algae, macroalgae, seaweed, wood waste, pulp, cotton, wool, linen, paper, and/or agricultural waste; and the product is alcohols, hydrocarbons, hydrogen and/or biodiesel (all claimed).    ADVANTAGE - The method produces ethanol from low-cost biomass using a mobile or portable production facility or small-scale facility/system, which is convenient to move or to have a small-scale facility nearby rather than moving the biomass used as the starting material in the process or the product such as ethanol produced by the facility, where the system eliminates or at least reduces the need for transporting the starting material biomass, which can be e.g. of a low bulk density, to a stationary large-scale production facility.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) producing energy from biomass, comprising producing a first energy source from biomass at a first site with a fermenter, reactor or a converter, transporting the fermenter, reactor or a converter to a second site and producing a second energy source from biomass at the second site with the fermenter, reactor or a converter;    (2) a method (M1) of producing a product from biomass, comprising producing a first product from biomass at a first site with a reactor or a converter, transporting the reactor or a converter to a second site and producing a second product from biomass at the second site with the reactor or a converter;    (3) producing a product from biomass, comprising producing a first product from biomass at a first site with a reactor or converter, transporting the reactor or converter by a first mode to a second site, producing a second product from biomass at the second site with the reactor or converter and transporting the reactor or converter by a second mode different than the first mode to a third site;    (4) a method (M2) of producing a product from biomass comprising producing a processed biomass by opening up or texturizing a cellulosic or lignocellulosic biomass material by mechanically treating the material, producing a first product from the processed biomass at a first site with a reactor or a converter, where producing comprises utilizing the reactor or converter to convert the process biomass into sugars using microorganism and an enzyme, transporting the reactor or a converter to a second site, and producing a second product from biomass at the second site with the reactor or a converter;    (5) a method (M3) of using a system for converting biomass, comprising providing a first system comprising a series of components at a first site, utilizing the first system to open up or texturize a first cellulosic or lignocellulosic biomass so as to make the complex carbohydrates or other biomolecules of the biomass available for further processing, to form a first processed biomass, converting the first processed biomass into sugars using a microorganism and/or an enzyme, transporting at least one component of the first system to a second site, providing a second cellulosic or lignocellulosic biomass to a second system comprising the component of the first system at a second site and utilizing the second system to open up or texturize the second biomass so as to make the complex carbohydrates or other biomolecules of the second biomass available for further processing, to form a second processed biomass, and converting the second biomass into sugars using a microorganism and/or enzyme; and    (6) a method (M4) of producing a product from biomass comprising producing a preprocessed biomass by texturizing or opening up a lignocellulosic biomass at a first site utilizing portable components of a system for processing biomass, transporting the preprocessed biomass to a second site including components of the system for processing biomass where, transporting is performed with a nautical vessel, an airborne vehicle, a car, a truck, a tractor train or a train, and producing a product from the preprocessed biomass with the components of the system at the second site, where producing comprises utilizing a reactor or converter to convert the preprocessed biomass into sugars using a microorganism and/or enzyme.