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Endesa - Electricity, Gas, People

Reactive Energy

Capacitor Batteries

Reactive Energy

Reactive power is the extra energy demand needed by some equipment (such as motors, transformers and spotlights) in order to function.
This extra energy can offset your electrical installation and create adverse effects such as the loss of useful capacity in installations, lower output in connected electrical devices, and even voltage losses and disruptions in the electrical grid. The majority of industrial loads produce this type of energy, together with active energy.

Negative effects of reactive power

There are certain negative effects associated with the consumption of reactive power:
  • Economic costs reflected in electricity bills.
  • Loss of capacity in installations.
  • Voltage losses that impair processes.
  • More overcharged transformers.
This energy also causes overcharge in the in the transformer lines and generators without producing useful output, and, as such, it is necessary to compensate it in order to optimize your electrical installations.

Advantages of reactive power compensation

Reactive power compensation helps in obtaining economic and technical advantages:
  • Increases the capacity of installed lines and transformers.
  • Improves network voltage.
  • Lowers energy losses.
  • Achieves a reduction in overall energy costs.
In different sectors, solutions are used to minimize the detrimental impact of the consumption of this type of energy. Basically, they consist of the use of equipment designed to neutralize reactive power present in electrical systems. A clear example is the installation of capacitor banks.
In addition, other mechanisms may be used to carry out exhaustive oversight of reactive power consumption and to be able to carry out corrective actions.  If you are a registered user of our Online Office you will be able to see reactive power charge curves, along with being able to download information to carry out concrete analysis.

How to save on reactive power?

  • Installing capacitor banks avoids reactive power penalties. These banks facilitate stabilization and quality of the supply. They also optimize the sizing and output of electrical installations. The useless energy demanded from the supply grid is thus decreased or even eliminated, and as a result, capacity is improved.
  • Capacitor banks can provide savings of up to 30% depending on the case. This allows for a quick depreciation on the investment (banks cost around 600, have a long useful life and require almost no maintenance).
  • With the installation of capacitor banks, you will pay 0% for reactive power. You will only pay for energy that is useful or consumed.