Economy 10 tariffs explained

Economy 10 is a multi-rate electricity tariff designed to help UK households manage high energy bills by offering cheaper rates during specific off-peak periods. It provides distinct charging windows throughout the day and night, allowing you to shift significant electricity use to more affordable times, particularly if you rely on electric heating or other high-consumption appliances.

Understanding Economy 10 tariffs can help you manage your energy usage more effectively. Fuse Energy offers modern dual-rate tariffs designed to give you greater control over your electricity bills. Click here to see how you could benefit.

What is an Economy 10 tariff?

An Economy 10 tariff charges different prices for electricity depending on the time of day, a contrast to standard tariffs that apply a flat rate regardless of when you use power. The aim is to encourage you to use energy when demand on the grid is lower, typically resulting in a lower overall cost if managed effectively.

Understanding the three time bands

Economy 10 typically divides the day into three distinct charging periods:

• Peak rate: This is the most expensive period, usually covering late afternoon and evening when most households are actively using electricity.
• Off-peak rate: A cheaper rate, often available for several hours during the day and night, designed for activities that can be scheduled outside of peak demand.
• Super off-peak rate: The cheapest rate, typically a shorter window late at night or early in the morning, ideal for appliances that can run overnight.

These distributed windows offer more opportunities to save compared to tariffs with just two rates, like Economy 7. The exact timings for these periods can vary by supplier and region, but a common pattern includes three hours in the afternoon, two hours in the evening, and five hours overnight.

How Economy 10 differs from Economy 7 and standard tariffs

The key difference lies in the number and duration of cheaper periods. A standard tariff charges a single flat rate for all electricity consumed. Economy 7 offers two rates: a day rate and a night rate, with the night rate typically lasting seven hours. Economy 10 expands on this by providing ten hours of cheaper electricity spread across three periods, offering greater flexibility. This means you have more opportunities to run appliances during off-peak times, but also more complexity in managing your usage.

Benefits of Economy 10

For the right household, an Economy 10 tariff can lead to noticeable savings on electricity bills. It empowers you to take control by aligning your energy consumption with the cheapest rates.

Potential for lower bills

The primary benefit of Economy 10 is the potential for lower electricity bills. By shifting a significant portion of your energy use to the ten off-peak hours, you pay a reduced rate for that consumption. This can be particularly advantageous for homes with high electricity demand that can be scheduled, such as charging electric vehicles overnight or running washing machines and dishwashers during cheaper periods.

Optimising electric heating and high-usage appliances

Economy 10 is often considered by households with electric heating, especially those using storage heaters. These heaters can be programmed to charge up during the super off-peak and off-peak periods, storing heat to release throughout the day when peak rates apply. This strategy maximises the benefit of the cheaper electricity. Similarly, other high-consumption appliances like tumble dryers, immersion heaters, and even electric vehicle chargers can be set to operate during the lower-cost windows, turning what would typically be expensive activities into opportunities for savings.

Drawbacks and considerations

While Economy 10 offers potential savings, it comes with its own set of challenges that need careful consideration. It is not a universal solution for everyone.

Higher peak rates

The trade-off for cheaper off-peak electricity is often a higher peak rate compared to a standard single-rate tariff. If you cannot effectively shift a substantial portion of your energy consumption to the off-peak windows, you might find your overall bill increases. This is a common pitfall: not understanding the specific peak and off-peak hours can lead to higher bills if usage isn't managed effectively.

The need for usage adjustment

To truly benefit from Economy 10, you must actively adjust your energy usage habits. This means being mindful of when you run appliances and, ideally, automating them to operate during the cheaper periods. For households with unpredictable energy needs or those unable to schedule their consumption, the tariff's advantages may be negated by higher peak-time usage. Assuming Economy 10 is always cheaper without analysing your own energy consumption patterns is another common mistake.

Meter requirements and upgrades

Eligibility for an Economy 10 tariff requires a compatible multi-register meter, which records consumption across different time bands. A standard single-rate meter will not work. While dual-rate tariffs, including Economy 10, can be supported by smart meters, they are not strictly required. A manual dual-rate meter with a supported Standard Settlement Configuration (SSC) can also be eligible.

Is Economy 10 right for you?

Deciding if an Economy 10 tariff is suitable depends heavily on your household's energy consumption patterns and your ability to adapt.

Assessing your energy consumption

The first step is to review your current electricity consumption. Look at when you use the most energy and consider if those high-usage activities can be shifted. If your household naturally uses a lot of electricity during the day and evening peak times, and you cannot easily change this, Economy 10 might not be the best fit. The average UK home uses around 2,700 kWh of electricity per year. Understanding your own usage against this benchmark can help you determine if you're a high consumer who could benefit.

Electric heating and storage heaters

Households with electric heating, particularly storage heaters, are often ideal candidates for Economy 10. These systems are designed to draw power during off-peak hours to heat up, then release that warmth throughout the day. This aligns perfectly with the tariff's structure, allowing you to maximise savings on your heating costs. If you have electric heating but don't currently have a multi-rate meter, exploring an upgrade could be beneficial.

The phase-out of Radio Teleswitch Service (RTS) meters

It's important to note that the Radio Teleswitch Service (RTS) meters, historically used for some multi-rate tariffs, are being phased out across the UK. This industry-wide phase-out began on 30 June 2025, with current suppliers responsible for replacing these meters with smart meters. If you have an RTS meter, your current supplier will arrange for a free upgrade to a smart meter. This transition is important because RTS meters are unsupported for switching to new suppliers. Once your meter is upgraded, you'll be able to access modern dual-rate tariffs.

Modern alternatives to Economy 10

While Economy 10 has served a purpose, newer technologies and tariffs offer more advanced and flexible ways to manage your energy.

Smart meters and dual-rate tariffs

Smart meters are revolutionising how households manage their energy. They automatically send readings to your supplier, eliminating the need for manual submissions and providing accurate billing. Crucially, smart meters enable access to modern dual-rate tariffs that offer similar benefits to Economy 10 but with enhanced features. These tariffs leverage the real-time data from smart meters to provide more dynamic pricing and better insights into your energy use.

Fuse Energy's approach to flexible energy

Fuse Energy does not offer Economy 10 tariffs. Instead, Fuse provides its own dual-rate variable and fixed tariffs as modern alternatives for customers with compatible meters, including smart meters and certain manual dual-rate meters with supported SSCs. These tariffs are designed to empower you to manage your energy usage effectively, turning high-consumption activities like electric heating into an advantage.

Fuse's digital-first app and 24/7 human support help you optimise your energy use with these modern dual-rate tariffs. This approach aligns with the idea of "power to play with" - enabling you to use more energy when it's cheapest, rather than constantly worrying about scarcity. By leveraging smart meter technology, Fuse offers a more advanced solution than legacy Economy 10, giving you greater control and making energy more affordable and controllable, especially for electric heating.

Ready to take control of your energy bills with modern dual-rate tariffs? Fuse Energy offers clear pricing, real-time usage data through our app, and 24/7 human customer support to help you make the most of your energy. Switching is quick and easy, so you can start optimising your energy use today. Click here to switch to Fuse Energy and discover a smarter way to power your home. You can also learn more about our mission to make energy abundant by clicking here.