Which hours is electric cheaper?

When Is Electricity Cheapest?

If you're looking to save on your energy bills, timing matters. Electricity isn’t just cheaper based on how much you use—it also depends on when you use it. Many suppliers offer tariffs that divide the day into peak and off-peak hours, meaning the cost per unit changes depending on the time.

For example, if you're on an Economy 7 tariff or have a two-rate meter, you benefit from a lower rate during the night. The cheaper, off-peak period typically lasts 7 hours, running anytime between midnight and 8am. This is ideal if you can shift energy-heavy tasks—like running the washing machine, charging an electric vehicle, or heating water—to those overnight hours.

Keep in mind, the exact timing of these off-peak hours can vary. They might differ based on your energy supplier, region, and even the season. Some suppliers set a fixed window, while others rotate the times slightly throughout the year. It’s always a good idea to check your meter or consult your provider to know precisely when your lower rate applies.

Using electricity during off-peak times won’t drastically change your lifestyle, but it can make a noticeable difference on your bill over time. Simple adjustments, like delaying your dishwasher until after midnight or setting your boiler to heat water overnight, can add up in savings—especially if you're on a tariff designed for it.

So, while electricity prices are rising overall, being mindful of timing offers a practical way to stay in control. If you’re on a time-of-use tariff, those quiet hours in the middle of the night might just be your most valuable.