What is a kilowatt hour (kWh)?

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What is a kilowatt?

A kilowatt is simply a measure of energy equal to 1000 watts of electricity.

What is the abbreviation for a kilowatt?

The abbreviation for a kilowatt is kW.

What is a kilowatt hour?

A kilowatt hour is a unit of energy you will see on your energy bill. It is equivalent to a single 1000 watt device used continually for 1 hour. A kilowatt hour is a measure of total energy and it refers to the amount of energy used over a period of time.

Power= Current (Amps) x Voltage
P= I x V

What is the abbreviation for kilowatt hour?

The abbreviation for a kilowatt hour is kWh.

What is a watt? laughing-emoji (I just had to have this as a heading...who’s on first style?)

A watt of electricity is a measure of power.

Power, in turn, is a function of the voltage of a circuit multiplied by the current.

What is a watt hour? laughing-emoji (I’m cracking myself up)

A watt hour is 0.001 of a kilowatt hour and is equivalent to one watt of energy being used continually for an hour.

Some examples of how to work out kWh’s of usage from specific devices

By way of example one kWh would also be used if: a single 20 Watt light bulb was used for 50 hours; or one hundred 20 watt light bulbs were used for 30 minutes; or A television that uses 100 watts was left on for 10 hours; or A 10 kW HVAC using 10,000 watts was run for six minutes to cool your home when you arrived home from work.

kWh of energy is the standard unit in which power is bought and sold to consumers.

What’s best to cut kWh use on your electric bill, energy efficiency or solar?

The potential to reduce the kWh of electricity you use through energy efficiency depends on how much power you currently use, how efficient your appliances are at using electricity and whether or not you are prepared to make lifestyle changes to save energy. In some instances, there are significant potential savings from energy efficiency measures.

However, for most people who own single-family homes in areas with high power prices, there are far greater potential savings from solar panel installation.


Find out what a solar system produces in your area!


kilowatt meter on wall

How many kilowatt hours of power does the average house use?

The government records data about the amount of kilowatt hours of power used by American homes. The average American home uses 10,766-kilowatt hours per year or 897 kWh per month. This is equivalent to 10.76 megawatt hours of energy consumption. Whilst a kilowatt is 1,000 watts of energy a megawatt is 1 million watts of energy. Output from power plants are measured in megawatt hours (mWh).

How many kilowatt hours does the average homeowner who installs solar panels use?

Our website is used by over 2 million visitors per year and about 5% of these visitors choose to enter their details into our online solar panels calculator to generate an online solar cost and savings estimate for their house. Analysis of these entries shows that these people have much larger usage than what is typical for their area according to the Energy Information Administration. The average usage of power of solar shoppers is around 1,100 kWh per month or 14,200 kWh per year.

Our Solar-Estimate solar estimator has all the rates schedules for almost every utility in America in its database and so if you know how much you spend a month on power we can reverse engineer this number to get an approximation of the amount of kWh of power you use per month. From this, we can also give you an estimate of the size of solar power system you would need to zero out the usage charges on your power bill.

How many kilowatt hours (kWh’s) of electricity will solar panels produce on your roof?

Our website contains a solar kWh calculator that will tell you how much electricity solar panels will produce if installed on your roof.

If you are a homeowner we highly recommend that you use the calculator because all you have to do is enter your address and the cost of your last months electricity bill and it will tell you how many solar panels you would need to wipe out your electric bill, how much they would cost and how much solar will save you over the life of the system. It is important you do this asap because the 30% federal solar tax credit the currently makes solar panels such a good investment ends at the end of 2019.


Find out how much your system would produce!



Calculate cost per kWh, savings and compare solar quotes online




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