The basic advantage of low-temperature plasma usage in biomass gasification is substantial growth of the hydrogen content and carbon monoxide content in syngas composition. At treatment of a chicken manure, the content of H2 + CO in syngas can be raised to ~97 % that allows an increase in the efficiency of its use in the Fisher-Tropsh process by 15-59 % and reach a specific yield of synthetic fuels ~240-260 g/kg, thus power inputs on the organization of the allothermal process will make only 4-5MJ/kg. These parameters can be reached in downdraft plasma gasification. Plasma energy is used for liquid slag removal in updraft gasification, and it has rather less influence on syngas composition. The most effective way of plasma generation is by systems on a basis of AC plasma torches thanks to a long lifetime of electrodes (more than 1,000 h), an effective energy transfer of the discharge to the plasma forming gas (to 80-95 %), high power at work in long-time modes (to 2 MW), and low losses in a power-supply system (no more than ~ 1-5 %). New AC plasma torches have arc voltage drops of about 1-10 kV and discharge currents of about 10-100 A. However, DC plasma torches are used more often. They typically have high currents (0.1-1 kA) and low voltage drops in the discharge (10-1,000 V) which are necessary for DC arc stabilization. Their main advantages are long-time operating experience and hence well-developed plasma torch models. Reliability of the executed estimations proves to be true by a good coordination with the experimental data which are obtained on the large-scale plasma gasifier. Total difference between mass balances was less than 1 %, and for energy balance less than 2 %. A series of long-time experiments on plasma gasification of wood proves that plasma gasification of biomass with use of AC plasma torches is ready for industrial implementation.