TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Method: In recovering energy, pretreating with acid is a merger of 0.1-5% by volume, preferably 0.5-1% by volume. It is done with a solid initial burden of 5-40% by weight/volume, preferably 10-30% weight/volume. It takes place at 100-180 degrees C, preferably 120-140 degrees C with a residence time of 30-90 minutes, preferably 40-60 minutes. It takes place in a reactor, complete type of mixed design and conical with internal agitation by Archimedes screw. Distillation is carried out in two stages, correction by dragging with steam and azeotropic distillation. The first slurry from the pretreatment containing insoluble and soluble solids is subjected to hydrolysis using cellulase enzyme and fermentation simultaneously using a microorganism fermentative. The separation solid-ethanol-water slurry obtained after the second stage of the SFS is done through a procedure for stripping in the column for rectification of the distillation process. The column is correct display of dishes to achieve the dual purpose of separation of ethanol, towed by steam, and third slurry. The method also comprises a stage of dehydration of ethanol, and recovery and treatment of effluents. Preferred Facility: In the facility to recover energy, the pretreatment unit comprises: (a) an assistant container of charged reactors; (b) a pump to supply reactors; (c) a container of product reactor; (d) a feed pump to fermenters; (e) prehydrolysis reactors; (f) a cooling reactor pump; and (g) a prehydrolysis cooler. The distillation unit comprises: (a) food container; (b) feed pump; (c) column grinder; (d) first condenser column; (e) first boiler column; (f) container of safety valves; (g) azeotropic column; (h) second condenser column; (i) second boiler column; (j) cooler and bioethanol; and (k) bottom pump. It also comprises an ethanol dehydration unit which comprises: (a) wet bioethanol tank; (b) wet bioethanol pump; (c) cooler and bioethanol; and (d) drying tower. It has an effluent treatment unit that comprises: (a) vacuum evaporation section comprising: (i) vacuum separator; (ii) a concentrated pump; and (iii) an evaporator; and (b) reclaimed water condensation section comprising: (i) reclaimed water accumulator; (ii) water pump treatment; (iii) an ejector; (iv) a precondenser; and (v) a postcondenser. The pretreatment unit also comprises: (a) preparation unit and handling of waste; (b) steam generation unit; (c) cooling water unit; (d) cold water unit; (e) air and ground instruments unit; and (f) fuel storage unit. It further comprises: (a) pretreatment unit of the organic waste fraction, which includes a cargo section and a prehydrolysis section; (b) a hydrolysis and simultaneous fermentation unit; (c) a distillation unit that includes a section for rectification and a azeotropic distillation section; (d) an ethanol dehydrating unit; (e) an effluent treatment unit comprising: (i) a vacuum evaporation unit; and (ii) reclaimed water condensation section; (f) preparation and handling of waste unit; (g) a steam generation unit; (h) cooling water unit; (i) cold water unit; (j) air and ground instruments unit; and (k) fuel storage media. EXAMPLE - No example given.