What is a kWh?
kWh measure energy in hours, for example, 1 kWh is the energy used by a 1,000-watt appliance running for one hour.
Different appliances consume energy at varying rates – 1 kWh is enough to power a 100-watt lightbulb for 10 hours, but a fridge-freezer is expected to use 1 kWh within 26 hours.*
If you would like to find out how much a kWh costs you can read the Ofgem price cap webpage. The price per kWh changes as per every price cap and there is a difference between the cost of electricity per kWh and gas per kWh.
Knowing about kWh’s helps you:
Track your usage: Understand how much electricity different appliances use.
Save money: Identify ways to reduce your electricity consumption and lower your bills.
Be more environmentally friendly: Use energy more efficiently and reduce your carbon footprint.
kWh are only one part of the way we calculate your bill. Read more information on [how your bill is calculated](https://www.scottishpower.co.uk/support-centre/your-bill-explained) or if you’re looking for ways to reduce the amount of energy you use, read our [energy efficiency webpage](https://www.scottishpower.co.uk/energy-efficiency) or the tips the [energy saving trust](https://energysavingtrust.org.uk/) provide.
* Figures from Ofgem
Last updated: 15 August 2024