Energy efficiency of electron plasma emitters V. G. Zalesski Polotsk State University, Novopolotsk, 211440, Belarus E-mail: V.Zalesski@mail.ru Electron emission influence from gas-discharge plasma on plasma emitter energy parameters is considered. <...> It is shown, that electron emission from plasma is accompanied by energy contribution redistribution in the gas-discharge from plasma emitter supplies sources — the gas-discharge power supply and the accelerating voltage power supply. <...>