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, energy and product from biomass (consisting of cellulosic material, lignocellulosic material, corn, sugar cane, sugar beets, trees, shrubs, grasses, phytoplankton, zooplankton, algae, macroalgae, seaweed, aquatic plants, 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 agricultural waste), where: the energy consists of alcohols, ethanol, n-butanol, gasoline, hydrocarbons, hydrogen, natural gas, biodiesel and electricity; the product consists of energy, ethanol, n-butanol, alcohols, hydrocarbons, gasoline, natural gas, methane, biodiesel, hydrogen, electricity, polymers, nutrients, proteins, biomolecules (including nucleic acids, proteins, lipids, steroids, natural products, metabolic products, nucleotides, nucleosides, fats, amino acids and peptides), pharmaceuticals, pharmaceutical products, fertilizer, medial products and chemical products (all claimed); and the ethanol is useful as an industrial chemical and solvent, fuel additive and straight liquid fuel and for car, sport utility vehicle and pickup truck.    ADVANTAGE - The method ensures efficient and large scale production of ethanol, energy and product from inexpensive biomass with high purity of 99% and without emissions of greenhouse gas and other pollutants including carbon monoxide, particulate matter, oxides of nitrogen and other ozone-forming pollutants.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are 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; and    (2) 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, or 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.