The amount of electricity a heated blanket or electric blanket uses will depend on its wattage and your usage. A heated blanket can either be kept on all night on a low setting, used for a short amount of time before you get into bed or you fall asleep, or set to turn off at a specific time if it comes with an auto shut-off timer. I've listed the wattage of each of the electric blankets in this guide in the specifications, with most averaging around 70 watts at full temperature. If you run your electric blanket at a lower temperature than the maximum setting available then you'll use fewer watts. To calculate how much it will cost to run an electric blanket you need to understand the cost per unit of electricity. Currently, the average cost per pence/kWh of electricity is approximately 27p. An electric blanket generates heat by running electricity through wires in the fabric. Each electric blanket will have a different power rating and the overall cost will depend on the rating on your blanket’s label. For the sake of this example, I’ll use an approximate power of 100W. This means that running an electric blanket for one hour would cost just 3p at current rates. Based on the above example, running an electric blanket will cost you around 24p a night (based on 8 hours of use). This is obviously significantly cheaper than having your central heating on all night, and for the average 70W or 80W blanket, you’re looking at even less. You can find out more in our guide to how much it costs to run an electric blanket. And make sure to check out our guide to how to save energy at home for more top tips on how to combat the climate and energy crises and increased costs of living.