One of the basic problems of the self-sustained high pressure volume discharge gas laser systems, arising at creation, is the energy deposition to the active volume problem. Obviously, that the solution of its is possible by two paths. To energy deposition increase it is possible by the increase of a capacity of high voltage circuit (HVC), or at the expense of rising charging voltage. It is necessary to execute a condition of the reconciliation of HVC and discharge: 2(E/p)str equals (E/p)s where (E/p)str is the effective electric field strength of the discharge gap, (E/p)s -- is the effective electric field strength of the electric source. Thus, the value of (E/p)s is established. Also it is necessary to observe a condition of the reconciliation of the HVC and discharge for the internal resistance HVC: (root)L/C equals Zd where Zd is impedance of discharge, L -- inductance of HVC, C -- capacity of source impact. The increase of capacity HVC in impact results to increase of energy deposition the expense of increase of current pulse duration, and rising of cathode channels and the contraction of discharge happens. The increase of active mixture pressure results to the increase of ionization process velocity and loss of plasma electrons process velocity. This leads to the reduce of discharge current duration. At the some moment, duration of the discharge becomes comparable to the discharge current time. This processes lead to the afterglow breakdown of the discharge gap and confine energy loading to the discharge. Thus, it is necessary to account to this processes at the building of gas lasers.