Off-peak electricity times explained

Off-peak electricity tariffs offer cheaper rates during specific, lower-demand periods, typically overnight. These tariffs can potentially reduce your electricity bills by allowing you to shift high-consumption activities to more cost-effective times, giving you more control over your energy costs. Understanding these periods is key to managing your household energy budget more effectively.

Making the most of off-peak electricity times can help you manage your energy bills more effectively. Fuse Energy offers clear pricing and in-app usage data to help you understand your consumption and make informed decisions. If you have a smart meter, click here to switch to Fuse Energy today and take control of your energy costs.

Understanding off-peak electricity

Off-peak electricity refers to periods when the demand for electricity on the National Grid is lower, leading to reduced prices. Energy suppliers pass these potential savings on to customers through special tariffs.

What defines peak and off-peak periods?

The energy market operates on a supply and demand basis. During "peak" times, usually when most people are awake and using electricity (like mornings and evenings), demand is high, and so are prices. "Off-peak" times are the opposite: demand is low, typically overnight, and electricity becomes more cost-effective. By using energy during these quieter periods, you contribute to balancing the grid and can benefit from lower rates.

Typical off-peak hours in the UK

While specific off-peak hours can vary between suppliers and tariffs, they generally fall during periods of low demand. This often means late at night and into the early morning, for example, between 10pm and 8am. Some tariffs might also include a shorter off-peak window during the day, such as a few hours in the afternoon. It is crucial to check the exact timings specified by your energy provider, as these will dictate when you can access the lower rates.

How off-peak tariffs work

Off-peak tariffs are designed to encourage a more balanced use of the electricity grid throughout the day. They typically feature at least two different unit rates for electricity: a higher rate for peak times and a lower rate for off-peak times.

Dual-rate variable tariffs vs Economy 7

Historically, Economy 7 was the most common type of off-peak tariff in the UK, offering seven hours of cheaper electricity, usually overnight. While Economy 7 still exists, modern energy needs and smart meter technology have led to the rise of dual-rate variable tariffs. These newer tariffs offer greater flexibility and can be tailored to contemporary energy demands, such as electric vehicle (EV) charging and smart appliance scheduling. Unlike the fixed seven hours of Economy 7, dual-rate variable tariffs can have more dynamic or varied off-peak windows.

The role of your electricity meter

To benefit from off-peak tariffs, you need a meter capable of recording your electricity consumption at different times of the day. This typically means either a smart meter or a multi-register (dual-rate) manual meter. Without a compatible meter, your supplier cannot accurately distinguish between your peak and off-peak usage, meaning you would not be able to access the varied rates.

The importance of smart meters

Smart meters are central to making the most of off-peak electricity tariffs in today's energy landscape. They provide the necessary technology to accurately track and bill your energy consumption according to different time-based rates.

Accurate tracking of off-peak usage

A smart meter automatically sends your energy readings to your supplier, distinguishing between peak and off-peak periods. This eliminates the need for manual meter readings and ensures you are billed precisely for your usage during each rate period. This accurate tracking is essential for dual-rate variable tariffs, which often have more complex or flexible off-peak windows than traditional Economy 7.

The radio Teleswitch service phase-out

Many legacy off-peak meters relied on the Radio Teleswitch Service (RTS) to switch between peak and off-peak rates. However, the RTS is being phased out across the UK, with the industry-wide switch-off beginning on 30 June 2025. This means that if you have an RTS meter, it will need to be replaced with a smart meter to continue accessing off-peak rates. Your current supplier is responsible for providing this free upgrade.

Maximising savings with off-peak usage

Leveraging off-peak electricity rates effectively requires a conscious effort to shift your energy-intensive activities. The average UK home uses around 2,500 kWh of electricity per year1, so even small changes can add up to potential savings.

Shifting high-energy activities

The key to saving money with off-peak tariffs is to use your most power-hungry appliances when rates are lower. Consider running washing machines, tumble dryers, and dishwashers overnight or during other designated off-peak periods. If you have electric heating or hot water systems, scheduling them to operate during these times can also lead to more cost-effective energy use.

Smart appliances and EV charging

Modern technology makes shifting usage easier than ever. Many smart appliances can be programmed to run at specific times. For electric vehicle owners, charging your EV during off-peak hours can significantly reduce your running costs, as this is often when electricity is most affordable. Dual-rate variable tariffs can offer flexibility for modern energy needs, such as electric vehicle charging and smart appliance scheduling.

Monitoring your consumption

Most smart meters and energy supplier apps provide detailed insights into your energy consumption, often broken down by peak and off-peak periods. Regularly monitoring this data can help you identify where you are using the most energy and fine-tune your habits to maximise your potential savings. This transparency allows you to see the direct impact of shifting your usage.

Choosing the right off-peak tariff

Selecting the most suitable off-peak tariff involves understanding your household's energy needs and comparing the options available. Not all tariffs are the same, and what works for one household might not be ideal for another.

Assessing your household's energy habits

Before committing to an off-peak tariff, consider your daily routine. Can you realistically shift a significant portion of your electricity usage to off-peak hours? If you work from home or have family members who are often home during the day, a tariff with a very short overnight off-peak window might not align with your usage. Conversely, if you have an EV or programmable appliances, you might find substantial benefits.

Comparing available tariffs

Look beyond just the off-peak unit rate. Compare the peak unit rates, standing charges, and any potential exit fees. Some tariffs might offer a very low off-peak rate but compensate with a higher peak rate or standing charge. Use comparison websites to explore different options and find tariffs that align with your usage patterns and lifestyle. Remember that tariffs that align with your usage are often the most suitable.

Fuse Energy's approach to off-peak power

Fuse Energy is committed to empowering customers to take control of their energy consumption and costs. Our approach to off-peak electricity is designed to be transparent and flexible, aligning with a future where energy is abundant.

Transparent tariffs and in-app insights

Fuse Energy offers dual-rate variable tariffs that allow you to benefit from cheaper off-peak electricity. Our in-app usage data provides clear, real-time insights into your consumption, showing you exactly how much energy you're using during peak and off-peak periods. This transparency helps you make informed decisions and adapt your habits to potentially reduce your bills.

Empowering control over your energy bills

We believe in providing the tools and information you need to manage your energy effectively. By offering clear pricing and detailed usage data, Fuse Energy empowers you to actively monitor and manage your energy consumption, making off-peak savings a tangible advantage. Our 24/7 human customer support is also available to assist you in understanding and making the most of your off-peak tariffs and smart meter data.

Ready to take control of your energy usage and potentially reduce your bills? Fuse Energy offers transparent dual-rate variable tariffs and in-app insights to help you make the most of off-peak electricity. If you have a smart meter, switching to Fuse is straightforward, giving you the tools to manage your consumption effectively. Click here to switch to Fuse Energy today. You can also learn more about our mission to build a future with abundant energy here.