# What is Kwh ?

Electricity prices have risen at a very constant rate over the past years and a higher rate increase is expected in the future. If you ever have the opportunity to study your utility bills, you will notice that most of your total expenses include utility charges and demand charges. In some cases, the demand charge may exceed the utility charge, and in most cases the demand charge will be half of the total bill. So it’s good to understand how electricity usage and demand charges are calculated so that you can limit both and decide the best ways to save some money for your business.

This step is very important:

What  are you  charged for in  your monthly electricity bill ?

Do you have a budgeted billing plan? For a steep hike in electricity bill ?

If you charge monthly for your usage, you will be billed for each cycle your home charges at the current rate for the number of kilowatt hours consumed this  month.

When you receive your electricity and gas bills, what do you see?

Most of us look at the total cost to make sure we don’t rack up a large credit or debit balance. Make sure the meter readings match those of your meter.

But do you ever take a closer look at the number of kilowatt hours (kWh) used and know what that means?

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You can use that information to monitor your gas and electricity usage, cut costs, and help lower your bills.

This is a very good way to make accurate comparisons if you are thinking of switching to a gas or electricity supplier, or you just want to check if you are getting a good deal, because you can see the exact cost of electricity per kilowatt, and then do the thing. same with gas.

A kilowatt-hour is a compound unit of energy equivalent to one kilowatt (kilowatt) of energy consumed in a hour . In the International System of Units (SI), the standard unit of energy expressed in Joules (symbol J) is 3600 kilojoules (3.6 MJ).

Time is the time indicated in non-SI units approved by the International Bureau of Weights and Measures for use with the SI. Its combination with the standard SI unit, the kilowatt, is allowed in the standard.

Unit Representation

The most used symbolic representation of the kilowatt-hour is “kWh”, based on the symbols of the units that compose it, the kilowatt and the hour. It is commonly used in business, educational and scientific publications and in the media. It is also a common unit representation in electrical power engineering. This general representation does not conform to the International System of Units (SI) style guide.

Other representations of the unit can be:

• The official US fuel economy window decal for electric vehicles uses the abbreviation “kW-hrs.”
• Sometimes there are differences in capitalization: kWh, kWh, kWh, etc., which are different for the International System of Units.
• The notation “kW / h” per kilowatt-hour is incorrect because it refers to kilowatt hours.

Distinguishing between kilowatt-hours (energy) and kilowatts (power)

Energy is work done; And energy is the rate of distribution of energy. Power is measured in joules or watts.

For example, the battery stores energy. When the battery provides its energy, it does so with a certain amount of energy, that is, the speed at which the energy is distributed. The higher the power, the faster the energy stored in the battery will be distributed. High power output Battery storage power decreases in a short period of time.

Annual power

Power generation and consumption are sometimes reported annually in units such as megawatt-hours (MWh / year), gigawatt-hours / year (GWh / year), or terawatt-hours (TWh / year) per year. These units of energy measurements are divided by time and therefore units of power. They can be converted to SI units of power by dividing the number of hours in a year by 8766 hours / year.

Therefore, 1 GWh / year ≈ 114.08 kW.

Watt time abuse

Many composite units for different types of rates clearly state the units of time to indicate changes over time. Power units like KW already measure the rate of power per unit time (kW = kJ / s). Kilowatt-hours are the product of energy and time, not the rate of change of energy over time.

Watts per hour (W / h) is the unit of energy change per hour, that is, the acceleration in the distribution of energy. It is used to measure the daily variability of demand (for example, the slope of the duck curve) or the acceleration behavior of power plants. For example, an acceleration rate of a power plant from 4 MW to 1 MW in 15 minutes is 4 MW / h. Hydroelectric plants have a very high acceleration rate, which is especially useful during peak loads and emergencies.

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