NOVELTY - Treatment method using hyperthermophilic organism, involves treating biomass with hyperthermophilic organism chosen from microorganisms having the characteristics of MH-I (Accession No. DSM 22925) and MH-2 (Accession No. DSM 22926) under conditions and obtaining at least one degradation product.    USE - The treatment method using hyperthermophilic organism is useful for producing degradation product including acetate, hydrogen, methanol or ethanol from biomass, where the degradation product is used as substrate for producing energy including heat and electricity. The hyperthermophilic organisms are anaerobic hyperthermophilic organisms chosen from Pyrococcus, Thermococcus, Acidianus, Palaeococcus, Thermoplasma, Pyrobaculum, Pyrolobus, Pyrodictium, Methanothermus, Methanopyrus, Fervidobacterium and Thermotoga (all claimed).    ADVANTAGE - The method is eco-friendly and enables to produce energy resources effectively from waste biomass materials or naturally available biomass materials with characteristics including: high carbohydrate value, relatively dense, and/or easy to collect, transport, store or handle.    DETAILED DESCRIPTION - Treatment method using hyperthermophilic organism, involves (1) treating biomass with hyperthermophilic organism chosen from microorganisms having the characteristics of MH-I (Accession No. DSM 22925) and MH-2 (Accession No. DSM 22926) under conditions and obtaining at least one degradation product, (2) providing organic matter and population of at least one genus of hyperthermophilic organism, degrading the organic matter by fermentation or by anaerobic or aerobic respiration in the presence of the population of at least one genus of a hyperthermophilic organism under conditions such that at least one degradation product is produced, and contacting the degradation product with a second organism to produce an energy substrate, (3) treating a biomass with a hyperthermophilic organism under conditions such that at least one degradation product is produced, where the biomass is provided in liquid medium with salt concentration of less than 0.2%, (4) providing a biomass that contains a human pathogen and a population of at least one genus of a hyperthermophilic organism, culturing the population of at least one genus of a hyperthermophilic organism under anaerobic conditions on the biomass at a temperature of 8O degrees C or higher, maintaining the culture at temperature of 80 degrees C or higher so that the pathogens are destroyed to provide a decontaminated biomass residue, and processing the decontaminated biomass residue, (5) providing a biomass and population of at least one genus of a hyperthermophilic organism, culturing the population of at least one genus of a hyperthermophilic organism under anaerobic conditions on the biomass substrate to produce hydrogen, and combining the hydrogen with methane to provide combustible gas, (6) providing organic matter and populations of a first and second hyperthermophilic organisms, degrading the organic matter by fermentation or by anaerobic or aerobic respiration in the presence of the population of the first hyperthermophilic organism to produce hydrogen and acetate, and degrading the organic material from the first stage with the second hyperthermophilic organism to produce hydrogen and acetate, (7) providing a hydrocarbon composition and population of at least one genus of hyperthermophilic organism, and treating the hydrocarbon composition in the presence of the population of at least one genus of hyperthermophilic organism under conditions such that degradation products are produced, (8) providing biomass and population of at least one genus of a hyperthermophilic organism, culturing the population of at least one genus of hyperthermophilic organism under anaerobic conditions on said biomass substrate to produce hydrogen and/or carbon dioxide, and adding the hydrogen and/or carbon dioxide to a biogas reactor to increase production of methane, or (9) providing a biomass and a population of at least one genus of a hyperthermophilic organism, culturing the population of a hyperthermophilic organism under anaerobic conditions on biomass substrate so that the population of at least one genus of a hyperthermophilic organism reaches and maintains a stationary phase, and maintaining the population of at least one genus of a hyperthermophilic organism in a predominantly stationary phase, and removing energy substrate from the culture. INDEPENDENT CLAIMS are included for the following:    (1) isolated microorganism having the characteristics of strain MH-I (Accession No. DSM 22925);    (2) isolated microorganism having the characteristics of strain MH-2 (Accession No. DSM 22926); and    (3) system has (a) first bioreactor containing biomass and population of at least one genus of hyperthermophilic organisms and second bioreactor containing methanogenic bacteria, where the fermented biomass from the first bioreactor is transported to the second bioreactor, (b) bioreactor containing biomass and population of at least one genus of hyperthermophilic organisms and culture system comprising algae, where the bioreactor and the culture system are in fluid communication, or (c) continuous bioreactor comprising biomass and population of at least one genus of hyperthermophilic organism, where the bioreactor has headspace and further comprises fitting contiguous with the headspace so that hydrogen can be removed from the headspace through the fitting, and heat energy transfer system.