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Vector fields of plane-polarized fading waves decompose by local space-temporary projecting on field of fading elliptical-polarized waves. Orthogonality of used projection operator forbids the interaction between different-polarized (left-hand and right-hand) elliptical waves; local conservativity of the considered system, which appears after fixing spatial watchpoint, allows one to use Hamilton descriptions. As a result the possibility for the building kinematically strict expressions for the scalar waves of density electric and magnetic energy (as proper, so and interference) from all considered elliptical waves is appears. Expressions for the velocities of the proper and interference energy and for the velocity of the energy of whole wave package are found.