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What is a Kilowatt-Hour (kWh)?

When Tipmont talks about how much energy you use, you’ll often see the word “kilowatt-hour” or the letters “kWh.” 

But what does that mean? 

A kilowatt-hour is a way to measure how much electricity you use. It’s kind of like how you use gallons to measure water or miles to measure distance. 

Kilowatts vs. Kilowatt-Hours

A kilowatt (kW) tells you how fast something uses electricity. A kilowatt-hour (kWh) tells you how much electricity has been used over time.

Think of it like this:

  • A kilowatt is like how fast water is coming out of a faucet.
  • A kilowatt-hour is like how much water has filled up a bucket.

An easy example

Let’s say you do hard physical work for eight hours straight. That’s kind of like using 0.5 kWh of energy.

If you work 40 hours in a week, that’s about 2.5 kWh of energy used.

How to calculate kWh

Power (kilowatts) × Time (hours) = Energy used (kWh) 

For example: 

If you charge an electric car using a 22-kilowatt charger for one hour, you use 22 kWh. If you charge it for three hours, you use 66 kWh. 

Why time matters

Water pouring into a bucketKnowing how much electricity something uses is important, but so is knowing how long it’s being used.

If your air conditioner uses 10 kWh, is that 10 kWh every day? Every week? The time makes a big difference.

Think of a bucket and water:

  • The speed the water pours in = power (kilowatts).
  • The amount of water in the bucket = energy used (kWh).

The faster the water pours (more power), the quicker the bucket fills up (more energy used).

Calculating your energy costs

How this affects your bill

This is how Tipmont figures your electricity cost:

Energy charge calculator

Save with a FREE in-home energy assessment

If you want to use less energy, Tipmont can help!

A free home energy assessment only takes about an hour, and it could help you save up to 30% on your monthly bill. 

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Nick Rogers

Nick Rogers is Tipmont's Communication Manager. He joined Tipmont in 2021. Nick has a bachelor’s degree in Journalism from the University of Illinois at Urbana-Champaign. In a previous life, he covered arts & entertainment and continues to publish film reviews. He loves movies (big shocker!) as well as rooting for the Chicago Cubs and trying new restaurants. He lives in Lafayette with his wife and dogs.

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