In this study, electrolysis of water was carried out using high voltage electrical plasma method. In known methods, electrolysis of water is carried out by placing two electrodes in a certain volume of water and applying a low voltage but high current Direct Current (DC) electrical power. In this proposed method, a more efficient electrolysis process is carried out by adding water vapor to the environment in a certain volume and applying a high voltage but low current DC electrical power to the two electrodes placed in this environment. Since electrical power losses are proportional to the square of the current under normal conditions, electrical losses are higher at the high currents but low voltage at same power value according to the P=U*I relation. In this case, since the current is very high in the existing methods, the electrical losses are also very high. However, in the proposed method, electrolysis was carried out using the high voltage but low current application method at the same power value according to the P=U*I relation. Thus, since the current is very small, the electrical losses are also very low. In this way, the efficiency of the electrolysis process has been significantly increased.