NOVELTY - Solid fuel, particularly for the power industry, from selected biodegradable municipal and/or industrial waste of fibrous materials from natural textiles and fibers, comprises a mixture of up to 80 wt.% of selected biodegradable municipal and/or industrial waste of fibrous materials from natural textiles and fibers, up to 80 wt.% of selected municipal and/or industrial waste of cellulose products, 10-30 wt.% of sifted stabilized fractions of biodegradable waste, 5-15 wt.% of biodegradable phytomass waste from farming, preferably straw, 10-30 wt.% of waste from hydroponic farming.    USE - Solid fuel for the power industry, preferably for boilers of different types (claimed).    ADVANTAGE - The solid fuel is environment friendly and can efficiently provide energy input for boilers of various types used by the power and heat generation industry, as well as for boilers used for heating residential houses and public buildings, at high heat content and low content of sulfur compounds and ash during combustion in boilers. Also, the solid fuel contains basic components being exclusively selected biodegradable waste, both municipal and industrial waste, and phytomass waste of various kind, enabling thus processing of large quantities of various waste deposited in landfills and generated by the various industries, and at the same time obtaining a fuel of high heat content and low content of ash during combustion in boilers.    DETAILED DESCRIPTION - Solid fuel, particularly for the power industry, from selected biodegradable municipal and/or industrial waste of fibrous materials from natural textiles and fibers, selected municipal and/or industrial waste of cellulose products, stabilized fractions of biodegradable waste, biodegradable phytomass waste and/or waste from plant produce processing, where it contains a mixture of up to 80 wt.% of selected biodegradable municipal and/or industrial waste of fibrous materials from natural textiles and fibers, up to 80 wt.% of selected municipal and/or industrial waste of cellulose products, 10-30 wt.% of sifted stabilized fractions of biodegradable waste, 5-15 wt.% of biodegradable phytomass waste from farming, preferably straw, 10-30 wt.% of waste from hydroponic farming. An INDEPENDENT CLAIM is included for a method of manufacturing solid fuel, particularly for the power industry, where up to 80 wt.% of selected biodegradable municipal and/or industrial waste of fibrous materials from natural textiles and fibers, up to 80 wt.% of selected municipal and/or industrial waste of cellulose products, 5-15 wt.% of biodegradable phytomass waste from farming, preferably straw, 10-30 wt.% of waste from hydroponic farming and/or 0-10 wt.% of dried fruit and/or dried flowers and/or dried vegetables past their expiration date and/or up to 5-15 wt.% of substrate from mushroom growing and/or 5-8 wt.% of tobacco waste and/or up to 5 wt.% of cork waste and/or up to 25 wt.% of pomace and other waste from plant produce processing is subjected to mixing and size reduction, preferably down to 0.1 - 30 mm, and drying in a high-speed mill, after which to the thus obtained size-reduced mixture of biodegradable components placed in a milling and drying device 10-30 wt.% of sifted stabilized fractions of biodegradable waste and/or 0-50 wt.% of dust from milling of all types of cereals, and/or 30-50 wt.% of dust from brewing industry is added and the whole composition is subjected to further mixing, drying, preferably to 11-12 % moisture content, and to size reduction, preferably to grain size of 0.1-10 mm, until a homogenous mixture is obtained, after which the obtained product is, if necessary, depending on the type of boiler where the fuel is to be used, subjected to the process of forming pellets or briquettes without introducing any additional binders.