Landis+Gyr Smart Meters in UK Homes

If you have looked closely at the smart meter in your hallway or meter cupboard, you may have seen the name Landis+Gyr on the case. It is one of the manufacturers whose meters are fitted in British homes as part of the national programme that is replacing analogue gas and electricity meters across Great Britain¹. The meter itself automatically sends your electricity and gas readings to your supplier, so you no longer need to read the meter or receive estimated bills².

The maker's name matters less than you might think. More than two thirds of energy meters in homes and small businesses, nearly 40 million of them, are now smart meters³, and they are installed in about half of UK properties⁴. Whichever company built yours, it was provided and fitted by your energy supplier, free of charge⁵. What actually determines how your meter behaves is the equipment around it, especially the communications hub, and the national network it talks to. Those are the parts this page follows, because they are where the replacements, the costs and the security questions sit.

What a Landis+Gyr smart meter does in your home

A Landis+Gyr smart meter does the same job as any smart meter in the national rollout: it records the gas and electricity you use and sends those readings wirelessly to your supplier, using a secure national data network rather than your home broadband⁶. The data it produces is what puts you in control of your energy usage, because you can see what you are spending and take energy-saving steps that reduce your CO2 emissions¹². The same visibility helps suppliers and other organisations understand how energy is being used across the system, which is part of the wider case for the rollout¹².

The installation is free. Suppliers are responsible for providing and fitting smart meters at no extra cost to you, and each energy company sets up the installation for its own customers¹³. You do not choose the manufacturer: the supplier decides which meter goes on your wall, which is why two neighbours on different tariffs can have meters from different makers that behave identically.

Most homes with smart meters have the same set of equipment¹⁵:

• an electricity smart meter
• a gas smart meter
• a communications hub
• an in-home display

The in-home display is the screen you actually interact with; the meters themselves sit in the cupboard doing the measuring. For a fuller explanation of the whole system, see how a smart meter works and the full guide to smart meters and home energy management.

The communications hub: the part that does the talking

The communications hub is a small device that typically sits alongside the electricity smart meter. It allows your smart electricity and gas meters and your in-home display to connect to each other and to the home area network, and it transmits your data to the national network by connecting to the wide area network¹¹. In plain terms, the meters measure, the display shows, and the hub is the component that carries everything out of the house. It is funded as part of the standard installation, alongside the meters and the display¹⁷.

Because the hub is usually in or near the electricity meter, distance can be a problem on the gas side. If the gas meter is too far from the hub, it may not be able to communicate with it, which is one reason a home can have a working electricity meter and a gas meter that never reports¹⁸. This is a design limit of the home area network rather than a fault in any particular meter.

The hub does not use your wifi. Smart meters work over a dedicated, standalone network, so sending a reading requires no internet connection at all¹⁰. That matters for independence: your metering does not depend on your broadband, your router or an app staying online. The dependence runs instead to the national network and its operator, covered below.

Why hubs must be replaced before 2G and 3G close

The wide area network that hubs connect to is made up of mobile phone or radio masts¹⁹, and which technology carries your readings depends on where in Great Britain you live:

The mobile services carrying the Central and South regions are due to close by the end of 2033²⁰. When they close, any hub still relying on them loses its link to the outside world.

The scale is large. The Department estimates that 7 million communications hubs will need to be replaced in the South and Central regions ahead of 2033, when the 2G and 3G communications networks are closed⁷, and the same figure is reported by the Public Accounts Committee, which notes the hubs will lose functionality when the networks close⁸. Second-generation smart meters that rely on 2G and 3G will require a replacement Communications Hub in order to communicate with 4G networks¹⁶. The transition has already begun in stages: after the 3G switch-off, meters moved seamlessly to 2G¹⁶, and 2G communications hubs used by some smart meters across all suppliers were switched off on 1 June²¹.

Swapping the hub: the visit, the 4G standard and the £2 estimate

A hub replacement is a home visit to swap one small device, not a full meter exchange. Since December 2024, new 4G Communication Hubs have been installed as standard¹⁶, so homes fitted recently are unlikely to need a second visit. The Department considers the replacement exercise will cost about £2 for each household⁷. That is a programme cost: suppliers must provide and fit smart meters at no extra cost to you¹³, and the meters are free to install in homes and businesses¹⁴.

The wider cost framework sits with suppliers and the network. Ofgem's work on guaranteed standards for smart meters estimates £26 million of set-up costs, annuitised to £5 to £6 million annually, plus £9 million a year of ongoing costs, within an overall incremental supplier cost estimate of £2.4 billion in today's terms, or £150 million per year as a constant annuity²². On the price cap side, the Smart Meter Net Cost Change allowance for 2025 was minus £4 per dual fuel customer on standard credit, and minus £6 on the weighted average²³, meaning metering costs were reducing bills rather than adding to them in that year.

There is also a consumer backstop. Reforms brought forward by Ofgem mean £40 compensation is payable for problems such as delayed or failed installations²⁰, and suppliers must replace all smart meters still connected to 2G and 3G before the services are switched off by 2033²⁰.

The DCC network: 20.5 million connections and a Virtual WAN to come

Behind every hub sits the Data Communications Company, which operates the secure national network connecting smart meters across Great Britain¹⁰. In April 2025 the network reached 20.5 million homes and small businesses connected⁹, and more than half of all homes in Britain are now connected to it¹⁰. About 12 million first-generation SMETS1 meters have been enrolled onto the network through over-the-air software updates, which is what restored their smart functions after switching supplier¹⁰.

The network is deliberately separate from the internet. Readings are transmitted from the home to a wide area network of mobile phone or radio masts, wrapped in two layers of encryption¹⁹, and the network operates entirely separately from the public internet¹⁷. Security experts monitor it around the clock, carrying out around 1,500 daily checks¹¹. Through the network, smart meter data can be shared securely between authorised users, supporting smart energy services across the sector¹⁰.

One gap remains: homes with no wide area network coverage at all. The DCC is scheduled to launch a Virtual WAN service, allowing broadband, with consumer consent, to connect homes without WAN coverage to the national smart metering communications network²⁵. That would add a broadband dependence for those specific homes, but only with consent, and only where the dedicated network cannot reach.

Security requirements under the PSTI regime

Smart meters are connected products, and they fall under the UK's product security regime. The Product Security and Telecommunications Infrastructure (Security Requirements for Relevant Connectable Products) Regulations 2023 brought sections 57, 60 and 75 of the 2022 Act into force on 7 February 2023²⁶, and regulation 5 came into force on 29 April 2024²⁷. Amendment regulations in 2025 added exceptions for motor vehicles and certain other vehicle types in Great Britain²⁷, leaving the core security requirements for products such as meters untouched.

The metering system's own security was built in from the start. The smart meter network was designed with security at its core alongside the National Cyber Security Centre, part of GCHQ²⁴, and the DCC network wraps smart meter data within two layers of encryption before sending it over a dedicated communications system, in line with governance and data protection standards¹⁰. The data collected from your smart meter is protected by the law⁶.

On the enforcement side, Ofgem's final decision on smart meter Guaranteed Standards of Performance, published in January 2026, sets out the standards suppliers must meet. The first standard, on installation appointment availability, applies to first-time smart meter installations only, meaning the installation of a smart meter in a premise where one is not already installed²⁸. The standards are limited to microbusiness customers with smart meters, excluding larger non-domestic customers and advanced meters²⁸. Suppliers must also take all reasonable steps to ensure smart meters automatically send them gas and electricity readings²⁹. More detail on the regime is on our PSTI and connected device security page.

Landis+Gyr the company: EMEA as a standalone business

Landis+Gyr is a long-established metering manufacturer, and its European, Middle East and African operations now sit in a changed structure: from 9 April 2026, Landis+Gyr EMEA operates as a standalone company, with earlier press releases reflecting the prior group structure³⁰. For a householder, a change of corporate structure does not change anything at the meter: the equipment already installed continues to work, and obligations around it run to your supplier, not to the manufacturer.

That is the key point about who made your meter. The supplier owns the installation relationship, arranges the fitting, and is responsible for maintenance³¹. The manufacturer's role ends when the meter leaves the factory, which is why the national programme's rules, standards and replacement schedules apply to every maker's equipment in the same way. All smart meters meet the same safety standards regardless of your energy supplier⁶, and all meters installed in the national rollout follow UK and EU product safety legislation covering the correct use of radio equipment and emissions¹⁵.

When readings stop arriving: causes and remedies

A smart meter may stop recording the energy you use, or may no longer send readings to your supplier³². When that happens, contact your supplier: they are responsible for maintenance and will fix or replace the meter as needed³¹. You can still take manual readings in the meantime²⁹.

The causes are varied. A meter not operating in smart mode may be in that state for any of these reasons²⁹:

• it has lost connection with your supplier
• it lost connection after you changed supplier
• it was installed without being connected to the national communication system

Early SMETS1 meters lost functionality when you switched supplier, though the majority have now been reconnected to the network³. Your meter may work in smart mode again if you change tariffs or suppliers³³. The scale of the problem has been measured: as at March 2023, 3 million smart meters were not working properly, 9% of installed meters, including around 1.4 million that were working at installation but had since lost communication⁷.

If the supplier does not resolve it, the Energy Ombudsman handles smart meter complaints, and its published case work notes that a failure to send readings can sit with the communications network rather than the supplier, causing estimated bills until it is traced¹⁸. Delayed or failed installations can attract £40 compensation under the Ofgem reforms²⁰. Step-by-step help is on our smart meter not sending readings page, and the wider fault picture is on smart meter faults and troubleshooting.

For energy independence, the honest summary is this: a Landis+Gyr meter, like any smart meter, gives you accurate data and remote billing without depending on your own broadband, but it keeps your home tied to the national network, to your supplier's obligations, and to a replacement programme running to 2033. The meter measures locally; the system around it is shared infrastructure.