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The paper achieves a study on the reactive power consumption in case of a medium sized factory. The factories as others industrial consumers usually have the power factor lower than the neutral one, which in Romania is 0.92; that is why these types of consumers have to pay for reactive power. The reason for the power factor is small (sometimes much lower than the neutral) is not always just because of inductive receptors (as transformers, induction motors, induction furnaces, etc.) but also due to some technical- organizational issues. Many of these issues could have been avoided if more attention had been paid to the proposals made by the power installations designer in the design stage and it would not have been considered only the aspect of investment costs, which, though not decreased very much, provoke much more operating costs. This paper will emphasize these features that cause additional costs with reactive power for a medium sized factory who has more substations with two transformers in each of them. It also proposes, after an analysis of the current situation, technical-organizational solutions to minimize the reactive power consumption.
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