The experiments with Tesla transformer are reviewed. It is shown that the existence of electric standing wave in the vicinity of the transformer follows directly from the Maxwell's equations. Further it is shown that the existence and propagation of the electric standing wave may be explained by energy exchange between this wave and the air.
Further a Tesla flat coil is considered. It is shown that directly from Maxwell equations there follows the existence of magnetic standing wave in the coil's vicinity. The existence and propagation of magnetic standing wave is also explained by energy exchange between the wave and the air.
As a consequence, it is shown that the heat energy in the transformer vicinity may be transformed by the electric standing wave into the load energy. The existing constructions for non-fuel energy generation and wireless energy transfer are analyzed. The presented theory explains the known phenomena.