Switching to an Economy 7 or 10 tariff charges you less for washing at night time.

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The tariffs charge you dual rates depending on the time of the day.

If you are on an Economy 7 tariff, you’ll be charged less across 7 hours, and 10 hours if you are on an Economy 10 tariff.

Do check with your provider as the hours where you are charged the lower rate will vary depending on who you are with.

But you generally pay a lower unit rate for electricity used between 10pm and 8am.

Off-peak hours for Economy 10 customers vary as well so it’s worth checking with your supplier what they would be.

But you could end up spending more if you use a lot of energy in the daytime, so keep an eye on your usage if you do decide to switch.

Always remember leaving appliances on at night can create a fire hazard.

That warning doesn’t apply to showers but it is something to take note of when it comes to other electronics such as washing machines and tumble dryers.

Here are a few tricks to help you save money on your water bills.

How much does it cost to have a shower?

Uswitch said taking a 10-minute shower would cost around 39p for an 8.5KW electric shower under the current price cap.

This assumes it’s a tariff that doesn’t vary depending on the time of day.

If you did this every day, it would cost you £142.35 for a year.

But if you have an Economy 7 tariff, it will be cheaper in the evenings although it’s important to note the rates vary among suppliers.

Using Octopus’ day and night rates with the same shower, a 10-minute shower with a 34.44p/kWh day rate would cost 49p.

While a 10-minute shower with a 14.97p/kWh night rate would cost 21p.

Ben Gallizzi, an energy expert at Uswitch, previously said: “People on Economy 7 will likely be paying more to shower during the day than those on standard tariffs with rates capped by the energy price guarantee, but night-time costs are lower.

“However, usually people with Economy 7 tariffs will pay their cheaper rates between midnight and 7am — so if you are an early riser, you may benefit from cheaper rates by taking an early morning shower rather than needing to have one in the middle of the night.”

So, if you’re someone that works a night shift, it might be worth getting an Economy 7 tariff.

How can I save money on my water bills?

Beyond switching to an Economy 7 or 10 tariff, there are some other ways you can slash your water bills.

Taking a shorter shower could save you over £50 a year.

Leaky loos and dripping taps can waste water without you knowing so fixing any around the house will save you some money.

Plus, making sure your washing machine or dishwasher is fully loaded before turning it on will make sure you’re using them in the most energy-efficient way.

And you could even consider buying a water meter if your usage is low.

Water meters measure the exact amount of water you use, rather than relying on estimates based on rateable values, which is a calculation based on your property and can’t be changed.

Most water suppliers provide help for vulnerable households as well.

You can find out who your water supplier is on the Consumer Council for Water website.

Do you have a money problem that needs sorting? Get in touch by emailing [email protected].

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