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If reactive energy is a conventional measure, why am I paying for it?

Because the circulation between the supplier and consumer takes place through power networks. Because, although, conventionally, the total current component, corresponding to total power, may be decomposed into active current component and reactive current component, nevertheless a total current shall circulate through power networks. Because of the Joule-Lenz effect of heat dissipation upon current passing through a conductor, the electric energy transport shall be affected by losses; the higher the reactive current component and circulated reactive energy, the bigger the losses. These power losses are deducted by the electric energy supplier when billing reactive energy as well.

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