Convert Reactive Energy from Kilovolt-Amperes Reactive Hour to Millivolt-Amperes Reactive Hour (kVARh to mVARh)

Kilovolt-Ampere Reactive Hour to Millivolt-Ampere Reactive Hour Conversion Formula

Example

Let's convert 5 Kilovolt-Ampere Reactive Hour (kVARh) to Millivolt-Ampere Reactive Hour (mVARh).

Using the formula:

Therefore, 5 Kilovolt-Ampere Reactive Hour (kVARh) is equal to 5000000 Millivolt-Ampere Reactive Hour (mVARh).

How many kilovolt-amperes reactive hour are in one millivolt-ampere reactive hour? One Millivolt-Ampere Reactive Hour (mVARh) contains 10^-6 Kilovolt-Amperes Reactive Hour (kVARh) — the inverse of the factor above. Multiplying by 10⁶ takes you from kilovolt-amperes reactive hour to millivolt-amperes reactive hour; multiplying by 10^-6 brings you back.

Put in words: one kilovolt-ampere reactive hour equals 10⁶ millivolt-amperes reactive hour, so the kilovolt-ampere reactive hour is the larger unit of this pair. Converting between them never changes the amount of reactive energy being measured — only the size of the unit you count it in.

What Is a Kilovolt-Ampere Reactive Hour (kVARh)?

A Kilovolt-Ampere Reactive Hour (kVARh) is the standard unit used to measure reactive energy.

It is a larger multiple of the base unit, the Volt-Ampere Reactive Hour (VARh).

• 1 kVARh = 1,000 VARh

How kVARh Affects Energy Efficiency

Reactive energy is often called "wasted" or "non-working" power.

Here's a simple comparison:

• Active Energy (kWh): This is the "useful" power that does real work, like lighting a room or running a machine.
• Reactive Energy (kVARh): This is the power required to create and sustain the magnetic fields in heavy equipment like motors, transformers, and pumps.

A high kVARh reading indicates a low power factor, which means your electrical system is inefficient.

It's drawing more current from the grid than it actually needs to perform the useful work.

High kVARh Can Increase Your Electricity Bill

Many utility providers, especially for commercial and industrial customers, issue penalties for high reactive energy consumption.

High kVARh levels force the utility to generate and transmit more current to meet your demand, which puts extra strain on their transformers and distribution lines.

These costs are then passed on to you, often appearing as a "power factor penalty" or "reactive power charge" on your monthly electricity bill.

How to Reduce kVARh and Lower Your Bill

You can lower your kVARh consumption through a process called power factor correction.

The most common method is installing capacitor banks, which act as local reactive power generators. By supplying this energy on-site, they reduce the amount of reactive power you need to pull from the grid.

This process directly:

• Lowers your recorded kVARh
• Improves overall system efficiency
• Frees up electrical capacity in your system
• Eliminates costly power factor penalties

What Is a Millivolt-Ampere Reactive Hour (mVARh)?

A Millivolt-Ampere Reactive Hour (mVARh) is a unit of measurement for a specific type of electrical energy called reactive energy.

Put simply, it's a tiny unit, equal to one-thousandth of a Volt-Ampere Reactive Hour (VARh).

It's used when measuring small amounts of reactive energy, allowing for exact and precise calculations.

First, What Is Reactive Energy?

To understand mVARh, you first need to know about reactive energy. In an electrical system, you have two types of energy:

• Real Power (measured in Watts): This is the energy that does actual work, like lighting a bulb or spinning a motor.

• Reactive Power (measured in VARs): This is "wasted" energy that is stored and released in the circuit. It's necessary to create the magnetic fields that devices like motors and transformers need to run. Still, this energy doesn't perform the final "work."

A simple analogy is a glass of beer. The liquid beer is the real power—it's what you actually drink. The foam on top is the reactive power. You need the foam to complete the beer, but the foam itself doesn't quench your thirst.

A Millivolt-Ampere Reactive Hour (mVARh) is a unit that measures the flow of this reactive "foam" over a period of one hour.

mVARh vs. VARh: Understanding the Conversion

The "milli" in mVARh means one-thousandth.

It's a subunit of the more common Volt-Ampere Reactive Hour (VARh), just like a milliliter is a subunit of a liter.

The conversion is straightforward:

• 1 mVARh = 0.001 VARh
• 1,000 mVARh = 1 VARh

Why Is mVARh Used?

Since a VARh is often too large for specific applications, the mVARh unit exists for more granular measurement.

Using this smaller, standardized unit (as part of the International System of Units, or SI) is essential for:

• Precision: It allows engineers to be highly accurate when designing and analyzing small-scale electrical circuits.

• Energy Billing: Utility companies sometimes use it to measure and bill for reactive energy consumption, as too much reactive power can be inefficient for the grid.

• Technical Standards: It ensures that electrical measurements are consistent and understood by professionals worldwide.

Kilovolt-Ampere Reactive Hour to Millivolt-Ampere Reactive Hour Conversion Table

Here are some quick reference conversions from Kilovolt-Ampere Reactive Hour (kVARh) to Millivolt-Ampere Reactive Hour (mVARh):