NOVELTY - The reformer module includes a heater for raw material, primary fuel and/or secondary fuel and each has a unit supplying raw material and oxidant e.g. steam. There are extraction units for raw fuel gas, waste gas and/or solids, e.g. ash. The gas cleaning module (10) includes a filter (11) especially a metal membrane.    USE - To upgrade biomass and organic wastes.    ADVANTAGE - The plant upgrades biomass and other organic wastes, reducing the volume of residues to a minimum. Factors influencing the choice between plant item alternatives are enumerated individually in the text.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the corresponding method. Preferred Features: Pore size of the filter permits exclusively hydrogen atom (sic) diffusion through it. The filter includes a metal alloy e.g. Pd-Cu or Pd-Ag alloy. The filter is e.g. a tube or plate filter. The reformer module (3) has a fluidized bed reactor. One section heats the educt, the other is an endothermic reactor section. The heat transfer unit (16) is a pulsating combustor or a tube burner preferably for indirect heating of the reformer. The heat exchanger (20) is a plate, tube bundle, spiral or cartridge heat exchanger. Evaporation of the oxidant requires a boiler, preferably between stack (21) and reformer module. A range of conventional dust extractors is cited, between reformer module and the oxidation module (8). Between dust removal module (7) and the gas cleaning module (10) there is a water gas shift reactor (9). An (electrical) energy production module (12) comprises a fuel cell (14). Control, sorting, magnetic separation, materials preparation, advanced sterilization, storage equipment and gas cleaning systems are itemized.    DESCRIPTION OF DRAWING(S) - The drawing shows a block flow diagram of the plant.    reformer module (3)    oxidation module (8)    dust removal module (7)    water gas shift reactor (9)    gas cleaning module (10)    filter (11)    energy production module (12)    fuel cell (14)    heat transfer unit (16)    heat exchanger (20)    stack (21)