For installations with several loads that may start and stop with relative frequency, it is more interesting to use an overall or centralized correction, because in general, not all are connected at the same time and therefore the total necessary power may be reduced according to the simultaneity factor.

One of the main advantages of reactive energy correction is that it reduces the current passing through the electrical system so that losses are reduced and the installation's performance is increased. Above all it is very effective in installations where the transformer is almost operating at its load limit, as changing it can be avoided.