What is a smart meter?

Smart meters are the next generation of gas and electricity meters, designed to modernise how energy usage is measured and communicated in homes across Great Britain. They replace traditional meters, which require manual readings, by automatically sending your energy consumption data to your supplier. This shift is foundational to enabling customers to take control of their energy use and unlocking future energy abundance, aligning with Fuse Energy's vision.

Understanding smart meters is key to managing your energy effectively. With Fuse Energy, you can easily track your usage and make informed decisions. Click here to switch to Fuse Energy today.

Understanding smart meters: the basics

What exactly is a smart meter?

A smart meter is a digital device that records your energy usage in near real-time. Unlike older meters, it doesn't just tick over; it captures detailed information about how much gas and electricity your home consumes. This data is then securely sent directly to your energy supplier, eliminating the need for estimated bills and manual meter readings. Smart meters also come with an in-home display (IHD), a small screen that shows you exactly how much energy you're using in pounds and pence, helping you understand your consumption habits.

How do smart meters work?

Smart meters communicate through a secure national network managed by the Data Communications Company (DCC). This dedicated network, separate from public broadband, ensures that your energy usage data is transmitted securely and reliably to your energy supplier. For electricity, meters typically send readings every 30 minutes, while gas meters usually send daily readings. This frequent data transmission allows for accurate billing and provides you with up-to-date information on your energy use through your in-home display. The data is transmitted securely, safeguarding your privacy.

Key benefits of smart meters for your home

Accurate billing and real-time insights

One of the most immediate benefits of a smart meter is the end of estimated bills. Because your meter automatically sends readings to your supplier, your bills will always reflect your actual energy consumption. The accompanying in-home display provides real-time feedback on your usage, showing you how much energy you're consuming and its cost in pounds and pence. This transparency empowers you to make informed decisions about your energy habits. For more details on how your energy bill is calculated, you can read our guide on understanding your energy bill.

Empowering energy management

With a clear view of your energy use, smart meters enable you to identify energy-intensive appliances or habits and adjust them accordingly. This insight can help you reduce waste and potentially lower your bills. For instance, seeing your energy use spike when a particular appliance is on might encourage you to use it more efficiently or at different times.

Supporting a smarter energy grid

Smart meters are a crucial component of a modern, flexible energy system. The detailed usage data they provide helps energy suppliers and network operators understand demand across the country more accurately. This enables better management of the grid, making it more efficient and resilient, and better able to integrate renewable energy sources. This contributes to a greener, more sustainable energy future for Great Britain.

Addressing common smart meter concerns

Are smart meters compulsory?

No, smart meters are not compulsory. While the UK government has a programme to offer every home and small business a smart meter, you are not legally required to have one installed. Energy suppliers have a legal obligation to take all reasonable steps to install smart meters in all domestic properties by the end of 2030, but the decision to accept one remains yours.

Data privacy and security

Smart meter data privacy is a key concern, and strict regulations are in place to protect your information. Ofgem, the energy regulator, oversees these rules, ensuring consumer protection and data security. Smart meters record only your gas and electricity readings; they do not store personal information like your name, address, or bank details. This data is transmitted securely over the DCC network.

SMETS1 vs SMETS2: what's the difference?

SMETS stands for Smart Metering Equipment Technical Specifications. SMETS1 meters were the first generation of smart meters rolled out. While they offered basic smart functionality, some SMETS1 meters would lose their 'smart' capabilities, such as sending automatic readings, if you switched energy suppliers. This often meant reverting to manual readings. For those with older, non-smart meters, learning how to read your meter manually is still a useful skill.

SMETS2 meters are the latest generation, designed specifically to address these limitations. They connect to the central national network managed by the DCC, ensuring they remain fully smart even if you switch suppliers. Many older SMETS1 meters have also been upgraded remotely to work on this network, allowing them to retain smart functionality after a switch.

Getting a smart meter for your home

Eligibility and the installation process

Most UK homeowners and tenants are eligible for a smart meter upgrade. To get one, simply contact your energy supplier. They will arrange a free installation appointment at your convenience. The rollout of smart meters is a government-backed initiative, and suppliers are actively working to install them across the country. You can find out more about the process in our smart meter installation guide.

What to expect on installation day

On the day of installation, a qualified engineer will visit your home to replace your existing electricity and/or gas meters with new smart meters. The engineer will carry out the installation, which may involve a brief interruption to your power supply. The engineer will also install your in-home display and show you how to use it to monitor your energy consumption.

Using your in-home display (IHD)

Your in-home display is your window into your energy usage. It shows you how much electricity and gas you're using in near real-time, often in pounds and pence. By regularly checking your IHD, you can quickly see the impact of turning appliances on or off, helping you understand where your energy goes and how to manage it more effectively.

Smart meters: a gateway to future energy

Unlocking dynamic tariffs and cheaper energy

Smart meters are essential for accessing modern, flexible energy tariffs. These often include 'time-of-use' tariffs, which offer cheaper electricity during off-peak periods when demand on the grid is lower and renewable energy is more abundant. With a smart meter, you can see when these cheaper periods occur and adjust your energy-intensive activities, like charging an electric vehicle or running a washing machine, to take advantage of lower rates. For more on how detailed data is used, see our article on half-hourly meter readings explained.

Integrating with smart home technology

The data provided by smart meters can integrate with other smart home technologies, allowing for even greater control and automation of your energy use. This paves the way for a future where your home can intelligently manage its energy consumption, optimising for cost and environmental impact without constant manual intervention.

Fuse Energy and your smart meter

Fuse Energy positions smart meters as the essential gateway to a future of energy abundance and unprecedented household control, enabling customers to actively manage their energy consumption and leverage cheaper, greener periods. The Fuse app integrates with smart meter data to provide real-time insights, empowering you to make informed decisions about your energy consumption. Fuse Energy offers free smart meter upgrades to eligible customers and provides 24/7 human customer support to assist with any smart meter queries or issues, ensuring a smooth customer experience.

The average UK home uses around 2,500 kWh of electricity and 9,500 kWh of gas per year, according to Ofgem's medium typical domestic consumption values (TDCVs) effective from 1 July 2026. With a smart meter, you gain the visibility to understand your own usage against these benchmarks and take steps to manage it.

Ready to take control of your energy? Fuse Energy makes it simple to switch and start benefiting from a smart meter. Our clear pricing, real-time usage data in the app, and 24/7 human customer support are designed to give you peace of mind and help you manage your energy more efficiently. Click here to switch to Fuse Energy today and join the energy revolution. You can also learn more about our mission to create a sustainable energy future here.