Cheap overnight electricity

Cheap overnight electricity tariffs offer significantly lower rates for power used during off-peak hours, typically overnight, compared to standard daytime rates. These tariffs, such as Economy 7, are designed to encourage energy consumption when demand on the grid is lower, leading to potential savings on your electricity bills. For homeowners and bill-payers, understanding and utilising these rates can be a practical way to take control of energy costs.

If you're looking to make the most of cheap overnight electricity, Fuse Energy offers smart tariffs designed to help you save. Our digital-first approach means clear pricing and easy management of your energy usage. Click here to see how Fuse can help you take control of your energy bills.

What is cheap overnight electricity?

Cheap overnight electricity refers to a pricing structure where the cost of electricity varies depending on the time of day it is used. This is known as a time-of-use tariff.

Understanding time-of-use tariffs

Time-of-use tariffs divide the day into different periods, each with its own unit rate for electricity. Off-peak periods, usually during the night, have lower rates, while peak periods, typically during the day and early evening, have higher rates. This system reflects the fluctuating wholesale cost of electricity, which is generally cheaper when overall demand is low.

Economy 7 explained

Economy 7 is a common type of time-of-use tariff in the UK, offering seven hours of cheaper electricity. These seven hours usually fall overnight, though the exact start and end times can vary by supplier and region. For example, some tariffs might offer cheaper rates from 12am to 7am, while others could be from 1am to 8am, or even split into two periods. The key benefit is a substantial reduction in the unit rate during these specific hours.

How do cheap overnight tariffs work?

Accessing and benefiting from cheap overnight electricity tariffs depends on understanding the rate periods and having the right metering technology.

Peak vs off-peak hours

On a dual-rate tariff like Economy 7, you'll have two distinct electricity rates: a lower off-peak rate and a higher peak rate. The off-peak rate is typically significantly lower than the peak rate. For instance, under the Ofgem Price Cap for 1 July to 30 September 2026, the average peak rate for electricity could be around 26.11p per kWh. The aim is to shift as much of your electricity usage as possible to the cheaper off-peak hours to maximise savings.

The role of smart meters

To accurately track your consumption across different rate periods, you need a compatible meter. Older multi-register meters (often called Economy 7 meters) can record usage for two different rates. While these can support some dual-rate tariffs, modern smart meters, particularly SMETS2 (Second Generation) models, are highly beneficial for accessing the most flexible time-of-use tariffs and for precise half-hourly consumption tracking. These meters automatically send readings to your supplier, eliminating the need for manual submissions and providing detailed insights into your usage patterns. If you have an older meter, your current supplier can typically upgrade it to a smart meter for free. A smart meter installation can unlock more dynamic tariffs.

Benefits of using electricity overnight

Beyond just saving money, utilising cheap overnight electricity offers several advantages for homeowners.

Significant cost savings

The primary draw of overnight tariffs is the potential for considerable savings on your energy bills. By running high-consumption appliances during the cheaper off-peak hours, you can drastically reduce your overall electricity costs. For example, if the off-peak rate is much lower than the 26.11p per kWh peak rate, the savings from charging an electric vehicle or running a washing machine overnight can add up quickly. The average UK home uses around 2,500 kWh of electricity per year, so shifting even a portion of this usage can lead to noticeable reductions in spending.

Greater energy control and flexibility

Cheap overnight rates give you more control over your energy spending. Instead of feeling constrained by high prices, you can strategically plan when to use energy-intensive appliances. This flexibility allows you to use more energy when it's most affordable, aligning with a vision of energy abundance rather than constant scarcity. With a smart meter and a supplier's app, you can monitor your usage in real-time and make informed decisions to optimise your energy strategy.

Environmental advantages

Using electricity during off-peak hours can also have environmental benefits. During periods of low demand, the electricity grid often relies more heavily on renewable energy sources, which might otherwise be curtailed if there isn't enough demand. By shifting your usage to these times, you indirectly support the integration of more renewable energy into the grid.

Is cheap overnight electricity right for you?

Deciding if a cheap overnight electricity tariff is suitable requires a look at your household's energy habits and current setup.

Assessing your energy usage

The first step is to understand when and how you use electricity. If you can easily shift a significant portion of your energy consumption to overnight hours, then these tariffs are likely to be beneficial. Consider activities like charging an electric vehicle, running dishwashers or washing machines, or heating water. If your lifestyle means most of your energy use occurs during peak daytime hours and cannot be shifted, a single-rate tariff might be more cost-effective.

Meter requirements and upgrades

To access dual-rate tariffs, you'll need a meter capable of recording usage at different times. This means either a multi-register meter or a smart meter. If you have an older meter, your current supplier can typically upgrade it to a smart meter for free. It's also worth noting that the Radio Teleswitch Service (RTS), which controls some older Economy 7 meters, is being phased out, with the industry-wide switch-off beginning on 30 June 2025. If you have an RTS meter, your current supplier will need to replace it with a smart meter. Once your supplier has replaced your RTS meter with a smart meter, you can switch to a modern tariff and get the latest smart meter technology and a digital-first experience.

Comparing tariffs

When comparing cheap overnight electricity tariffs, look beyond just the off-peak rate. Also consider the peak rate, as this will be higher than a standard tariff's single rate. Compare the standing charges too, as these can vary between suppliers. Understanding your energy bill can help you compare these costs effectively. Use online comparison tools and check directly with suppliers to find the best overall deal for your estimated usage pattern.

Maximising your savings with overnight rates

Once you're on a cheap overnight tariff, a few adjustments can help you get the most out of it.

Shifting high-consumption activities

The most effective way to save is to move as many high-consumption activities as possible to your off-peak hours. This includes:

• Electric vehicle (EV) charging: Schedule your EV to charge overnight when rates are lowest.
• Laundry and dishwashing: Use timers on your washing machine and dishwasher to run them during off-peak times.
• Water heating: If you have an immersion heater, set it to heat water overnight.
• Storage heaters: These are specifically designed to charge up during cheap overnight hours and release heat throughout the day.

Smart home optimisation

Smart home devices can automate this process, making it easier to maximise your savings. Smart plugs, smart thermostats, and EV chargers can be programmed to operate only during off-peak hours, ensuring you're always using the cheapest electricity available. This automation takes the guesswork out of managing your energy usage.

Monitoring your usage

Regularly reviewing your energy bills and usage data is crucial for optimising your savings. Many suppliers, including Fuse Energy, offer all-in-one apps that provide detailed insights into your consumption across different rate periods. By monitoring this data, you can identify areas where you could shift more usage to off-peak hours or adjust your routines further. If you have questions or need assistance with optimising your energy strategy, our 24/7 human customer support can help you understand your usage and make the most of your tariff.

Ready to take advantage of cheap overnight electricity and make your energy work smarter for you? Fuse Energy is committed to making energy simple, transparent, and rewarding. With clear pricing, real-time usage data in our app, and 24/7 human customer support, we're here to help you optimise your energy strategy. Switching is quick and easy. Click here to switch to Fuse Energy today. You can also learn more about our mission to build a sustainable energy future here.