FAQs - How do smart meters work?

What is a smart meter?

Smart meters are the new generation of gas and electricity meters. They are being installed in homes and small businesses across Great Britain at no extra cost. Smart meters are replacing traditional meters, including prepay key meters. Smart meters record your energy use in the same way as a traditional meter but then send the readings automatically to your energy supplier at regular intervals, allowing them to prepare an accurate bill.

How do smart meters work?

Your smart meter measures how much gas and electricity you use and securely shares this directly with your energy supplier at least once a month. You won't have to take any meter readings manually - your smart meter will send automatic readings to your energy supplier via the secure smart data network which is solely for smart meters. This works in a similar way as other wireless systems, but does not use the internet.

Do I need one smart meter for gas and another for electricity?

Yes, if you're a dual-fuel customer, both meters will need to be replaced. Your supplier will aim to install both meters on the same visit to make things as easy as possible. If your gas and electricity accounts are with different suppliers, you will have two separate smart meter installations - one from each of your suppliers.

If your business’s gas and electricity are supplied by different suppliers, we suggest having your electric smart meter installed before your gas smart meter. We have a lot more information about smart meters and the installation process on our installation process page.

Do I need a broadband connection to have a smart meter?

No. Smart meters use an entirely separate, bespoke wireless system. You don't need Wi-Fi for it to work and it won't use your Wi-Fi if you have it. Your smart meters communicate via a secure national network which is solely for smart meters. This works in the same way as other wireless systems like car remote keys or TVs, using radio waves.

Can I still get a smart meter if my business gets poor mobile signal?

If your business is located in an area with poor mobile telephone reception you can either request a first generation meter that uses this network, but may experience difficulties sending readings to your supplier automatically. Alternatively, you can contact your energy supplier and insist that they install a second generation meter, known as SMETS2. A SMETS2 meter is not reliant upon the mobile phone network and by the end of the rollout this network will have coverage of 99.25% of Great Britain.

Is my smart meter accurate?

Smart meters are as accurate as traditional meters. By law, all smart meters have to be approved by and certified by the Office of Product Safety & Standards to prove their accuracy. If you believe that there's a fault with your smart meter you can report it to your energy supplier in the same way you do now.