What is the Difference Between kVA and kVAR?

In short, kVA is Kilo-Volt-Amperes and KVAR is kilo-volt-Amperes Reactive Power. On its own, this doesn’t mean very much but they both have an important role to play.

Power gives you energy.

kVA is what you call a measure of power, apparent power. And it gives you the total amount of that power that’s being used in a system. If a system is as efficient as it can be, then kW should equal kVA and that gives you a completely efficient system. 

kVAR this gives you a measure of reactive power.

It’s power that hasn't changed into kVA. Basically any unused power left over is reactive power that’s created, or generated by reactive type components inside a generator.

Receiving, motion and drive.

A generator will receive energy and this in turn will help create motion or light, heat and even sound which are all powered by real power which is kW. Reactive power will generate magnetic fields and these will provide the rotating equipment with power and drive.

All of this can be confusing - we know.

The power factor will be a strong measure of how useful and effective the power is that comes into your electrical system - whatever that is. The higher the kVAR the lower the ratio will be of kW to kVA. You can have a kVAR system installed as this will save you money. It’s best you hire a professional to do this as it can be a tricky job. If they can help you to add an energy saver unit to your current energy system you will eventually see a definite money saving and in terms of your heating bills this is extremely beneficial, especially during such difficult times.

kVA will convert much more efficiently if the power factor is closest to 1 because electrical efficiency is always expressed as being between a power factor of 0 and 1. Generators usually have a power factor of 0.8.

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