OVO Smart Meter: A Complete Guide for UK Households (2026)
A detailed guide to OVO smart meters in 2026, covering models, installation, costs, switching, and whether an OVO smart meter is right for your home.
OVO Smart Meter: A Complete Guide for UK Households (2026)
If you’re an OVO Energy customer—or thinking of switching to them—you’ve likely heard about their smart meter rollout. But what exactly does an OVO smart meter look like, how does it work, and is it worth having one installed in your home this year?
This guide draws on manufacturer specifications, OVO’s published technical documentation, Smart Energy GB data, and owner feedback from the OVO community forum to give you a clear, honest picture. It covers everything you need to know about OVO’s current smart meter models, installation process, costs, compatibility, and how the system fits into the broader UK smart meter programme.
Whether you’re looking to save energy, monitor usage in real time, or simply replace an ageing meter, this article will help you decide if an OVO smart meter is the right choice for your home in 2026.
Quick Picks
If you’re in a hurry, here are the key takeaways at a glance:
| Product / Option | Best For | Key Specs | Typical Price (2026) |
|---|---|---|---|
| OVO SMETS2 (Aclara V2.5 Electricity + Flonidan Gas) | Current OVO customers wanting a modern, reliable smart meter | Electricity: 16cm × 13cm × 6.5cm; Gas: 26cm × 23.5cm × 17cm | Free installation for OVO customers |
| OVO Smart Meter + Chameleon IHD3 | Households wanting real-time energy tracking | Live usage, cost, and historical data on a dedicated display | Free with installation |
| Geo Minim+ In-Home Display | Customers wanting a clearer, more feature-rich display than the supplied IHD | SMETS2-compatible; colour display; works with most UK suppliers | Around £30–£50 at major retailers |
| Glowmarkt RGB Stick / RTDMID Dongle | Tech-savvy users wanting smart home integration (e.g., Home Assistant, Alexa) | Reads from your IHD via Zigbee HAN; exports live data to apps | Typically around £30–£60 |
| Third-party SMETS2 (e.g., British Gas legacy meters) | Households switching to OVO with existing smart meters | Varies; may need OVO-compatible replacement | Free replacement if incompatible |
Bottom line: For most OVO customers in 2026, the OVO SMETS2 setup (Aclara electricity meter + Flonidan gas meter) is the standard choice. It’s installed free of charge and offers full smart functionality. If you want richer data or smart home integration, third-party IHDs and Zigbee dongles (listed above) are worth considering alongside the free supplier-provided equipment.
Not yet an OVO customer? If you’re considering switching, OVO’s website carries a switching tool that may include referral or cashback offers—check their current promotions before booking an installation.
What Is an OVO Smart Meter?
An OVO smart meter is a next-generation gas and electricity meter that automatically sends your energy usage data to OVO, eliminating the need for manual readings. Unlike traditional meters, smart meters come with an in-home display (IHD) that shows your real-time consumption in pounds and pence.
OVO has been rolling out smart meters for several years as part of the UK government’s nationwide smart meter programme. As of 2026, OVO primarily installs SMETS2 (Smart Metering Equipment Technical Specifications 2) meters, which are fully interoperable—meaning they work seamlessly if you switch energy suppliers in the future.
The key distinction between SMETS1 and SMETS2 meters is important to understand, and we’ll cover that in detail below.
How OVO Smart Meters Communicate: The Technical Architecture
Understanding how your smart meter actually sends data helps explain why SMETS2 meters are so much more reliable than their predecessors.
The Home Area Network (HAN)
Your electricity meter, gas meter, and in-home display all communicate with each other wirelessly over a Home Area Network (HAN), which uses the Zigbee protocol—a low-power, short-range wireless standard. The electricity meter acts as the hub of this local network, relaying gas meter readings (which it receives wirelessly) onward to the wider network.
The Wide Area Network (WAN) and the DCC
The electricity meter also connects to the Wide Area Network (WAN), which links your home to the national smart metering infrastructure. This national infrastructure is managed by the Data Communications Company (DCC)—a government-regulated body that acts as the secure data intermediary between smart meters and energy suppliers.
When OVO needs to read your meter, update its firmware, or change your tariff settings remotely, the instruction travels from OVO → DCC → your meter’s Communication Hub. Readings travel in reverse. This architecture means that if you switch suppliers, your new supplier can simply connect to your meter via the DCC without any physical engineer visit—a key advantage of SMETS2 over the older SMETS1 system.
The Communication Hub
Built into the electricity meter is a Communication Hub, which manages both the HAN (talking to your gas meter and IHD) and the WAN (talking to the DCC). In areas with poor mobile coverage, the hub uses alternative radio frequencies; in most UK homes it uses the mobile data network (typically 2G or dedicated smart meter spectrum).
OVO Smart Meter Models: SMETS1 vs SMETS2
OVO SMETS2 (Current Standard)
According to the OVO community forum and OVO’s published installation guidance, OVO currently installs Aclara S2 electricity meters and Flonidan S2 gas meters. These are SMETS2-compliant, meaning they are:
- Fully interoperable with any UK energy supplier
- Remote firmware-updatable (no engineer visit needed for upgrades)
- Compatible with the national DCC smart meter network
- Zigbee-enabled on the HAN, allowing third-party IHDs and energy monitors to connect
Dimensions (from manufacturer and OVO installation documentation):
| Meter Type | Height | Width | Depth |
|---|---|---|---|
| Aclara V2.5 Electricity Meter | 16 cm | 13 cm | 6.5 cm |
| Flonidan Gas Meter | 26 cm | 23.5 cm | 17 cm |
These dimensions are critical if your current meter is in a tight cupboard—especially the gas meter, which is notably larger than some legacy models. Owner feedback on the OVO community forum frequently highlights the Flonidan gas meter’s depth as a potential issue when replacing older British Gas or other supplier meters, with several users recommending clearing at least 20 cm of clearance depth before the engineer arrives.
The Chameleon IHD3: OVO’s Supplied In-Home Display
OVO currently provides the Chameleon IHD3 as its standard in-home display. This is one of the most widely deployed IHDs in the UK smart meter rollout. Key features include:
- A colour LCD screen showing live electricity and gas consumption in kWh and £/p
- Historical usage data (daily, weekly, monthly views)
- Budget-setting and alert functions
- Wireless connectivity to the HAN via Zigbee (range is typically sufficient for most UK homes, though walls and distance can affect signal)
Owner reviews on the OVO forum are broadly positive about the IHD3’s core functionality, though a recurring theme is that the screen can be difficult to read in bright ambient light, and some users report occasional disconnection from the HAN requiring a manual restart. If you find the Chameleon IHD3 limiting, third-party alternatives such as the Geo Minim+ (typically around £30–£50) offer a larger, higher-contrast display and additional features, while remaining fully compatible with SMETS2 meters.
OVO SMETS1 (Legacy – No Longer Installed)
OVO previously installed Secure S1 smart meters (SMETS1). These are still in operation in many homes but are no longer being installed as of 2026.
| Meter Type | Height | Width | Depth |
|---|---|---|---|
| Secure S1 Electricity Meter | 178 mm | 146 mm | 64 mm |
| Secure S1 Gas Meter | 264 mm | 235 mm | 174 mm |
The key downside of SMETS1 meters is that they can lose smart functionality if you switch suppliers, because they were originally designed to communicate only with the installing supplier’s own systems rather than through the centralised DCC.
To address this, the DCC ran a national SMETS1 enrolment programme, migrating legacy SMETS1 meters onto the DCC network so they behave similarly to SMETS2 meters. According to Smart Energy GB’s published rollout data, the large majority of enrolled SMETS1 meters in Great Britain have now been successfully migrated to the DCC, meaning most SMETS1 meters that were previously “going dumb” on supplier switches are now interoperable. OVO has participated in this programme, and if you have a legacy SMETS1 Secure meter, it is likely already enrolled. You can confirm this by checking your meter status in your OVO online account or contacting OVO support.
If your SMETS1 meter has not been enrolled or you are experiencing issues, you can request a free upgrade to SMETS2 through OVO’s installation booking system.
Installation Process: What to Expect
Booking an Installation
OVO offers free smart meter installations to all their customers. You can book online via your OVO online account portal, where a calendar tool allows you to select available appointment slots. As of 2026, typical lead times are 2–4 weeks, though availability varies by region—rural areas and high-demand periods may see longer waits.
Before you book, check the following:
- Your meter cupboard or meter location is accessible (the engineer must be able to reach both gas and electricity meters safely)
- There is adequate clearance around the meters—particularly for the Flonidan gas meter, which requires approximately 20 cm of depth clearance
- Any items stored in the meter cupboard are cleared out in advance
- You (or another adult aged 18+) will be home for the duration of the appointment
What Happens on the Day
An OVO-approved engineer will visit your home to:
- Assess your current meter setup – checking space, accessibility, and safety before any work begins
- Briefly interrupt your electricity supply – typically for around 20–30 minutes while the electricity meter is swapped; you will be informed in advance so you can power down sensitive equipment
- Install the new Aclara V2.5 electricity meter – including the Communication Hub
- Install the new Flonidan gas meter – your gas supply will be off for a short period during this stage
- Commission the Home Area Network – pairing the gas meter, electricity meter, and Chameleon IHD3 so they communicate correctly
- Walk you through the IHD – explaining the display, how to set budgets, and how to read your consumption data
- Confirm the installation is complete – the engineer will verify that readings are transmitting correctly before leaving
Post-Installation Setup
After the engineer leaves:
- Your OVO online account should begin displaying smart data within 24–48 hours; if it does not update after 48 hours, contact OVO support
- If you want to connect a third-party IHD or Zigbee dongle (such as the Glowmarkt RGB Stick), you will need to request your MPAN and MPRN numbers from OVO and follow the pairing instructions for your chosen device—most pair via the HAN without any additional engineer visit
- Keep the IHD plugged in and within reasonable range of the electricity meter for the best connectivity
Costs and Charges
OVO smart meter installation is free of charge for OVO Energy customers. There is no fee for:
- The meters themselves
- The Chameleon IHD3
- The engineer’s time and labour
- Any subsequent remote firmware updates
The only potential costs are if you choose to purchase a third-party IHD or energy monitor for enhanced functionality—these are entirely optional and available from around £30 upwards at major retailers and online marketplaces.
If you are not currently an OVO customer, you will need to switch to OVO before booking a free installation. OVO’s switching process is handled entirely online and typically takes around 21 days, in line with industry standard switching timelines.
Switching Suppliers: Will Your Smart Meter Still Work?
One of the most common concerns about smart meters is what happens when you switch energy suppliers. Here is what you need to know:
- SMETS2 meters (the current OVO standard) are fully interoperable. If you switch away from OVO to another supplier, your meter will continue to send automatic readings to your new supplier via the DCC. You will not lose smart functionality.
- SMETS1 meters that have been enrolled onto the DCC (see above) are also now interoperable in most cases, though it is worth confirming with your new supplier that they can accept DCC-enrolled SMETS1 readings.
- The Chameleon IHD3 is tied to your HAN, not to OVO specifically. It should continue to display live data after a supplier switch, though some users report a brief period of disconnection during the switching process that resolves itself within a few days.
Enhancing Your Smart Meter Setup: Third-Party Accessories
The free OVO installation gives you a solid foundation, but several third-party products can significantly extend what you can do with your smart meter data.
Geo Minim+ In-Home Display
Typically around £30–£50 at major retailers. The Geo Minim+ offers a larger colour display than the Chameleon IHD3, clearer typography, and a more intuitive interface. It connects to your HAN via Zigbee and is compatible with SMETS2 meters from any UK supplier. Owner reviews on energy forums frequently cite it as a worthwhile upgrade for households who check their IHD regularly.
Glowmarkt RGB Stick / RTDMID Dongle
Typically around £30–£60. These Zigbee dongles connect to your smart meter’s HAN and export live consumption data to the Glowmarkt app and, via integrations, to platforms such as Home Assistant, Amazon Alexa, and Google Home. This is particularly useful for households with solar panels, EV chargers, or home automation setups who want to incorporate energy data into broader smart home routines.
Smart Plugs with Energy Monitoring
Products from brands such as TP-Link (Tapo range) and Meross, typically around £10–£20 per plug, allow you to monitor the consumption of individual appliances rather than just your whole-home total. These work independently of your smart meter but complement it well for identifying energy-hungry devices.
FAQ
Can I get an OVO smart meter if I rent?
Yes, in most cases. As a tenant, you are entitled to request a smart meter installation from your energy supplier. If your energy account is in your name, you can book directly with OVO. If your landlord pays the energy bills, they would need to make the request. It is good practice to inform your landlord before the installation, though in most tenancy agreements the installation of a free, government-programme smart meter does not require landlord permission—however, this can vary, so check your tenancy agreement if unsure.
Does OVO charge for smart meter installation?
No. Smart meter installation is completely free for OVO Energy customers. This includes the meters, the Chameleon IHD3 in-home display, and the engineer’s visit. There are no hidden charges.
What IHD does OVO use?
OVO currently provides the Chameleon IHD3 as its standard in-home display. It shows live electricity and gas consumption in both kWh and cost (£/p), plus daily, weekly, and monthly historical data. If you prefer a more feature-rich display, third-party options such as the Geo Minim+ are compatible with OVO’s SMETS2 meters.
Will my OVO smart meter work if I switch suppliers?
Yes—OVO installs SMETS2 meters, which are fully interoperable across all UK energy suppliers via the DCC network. If you switch away from OVO, your new supplier will be able to receive automatic meter readings without any engineer visit or meter replacement.
How long does OVO smart meter installation take?
A typical installation appointment takes around 1–2 hours from start to finish, covering both the electricity and gas meters plus IHD commissioning. Your electricity supply will be off for approximately 20–30 minutes and your gas supply briefly during the gas meter swap.
What if my smart meter loses signal or stops sending readings?
If your meter stops sending automatic readings, first check that your IHD is powered and within range of the electricity meter. If the problem persists after 48 hours, contact OVO support—they can remotely diagnose most communication issues via the DCC without needing to send an engineer. In some cases, a poor WAN signal (mobile coverage) in your area may require a different communication solution, which OVO can arrange.
My existing meter is a SMETS1—should I upgrade?
If your SMETS1 meter is enrolled on the DCC and functioning correctly (sending automatic readings), an upgrade is not strictly necessary. However, if you are experiencing issues—such as readings not updating or smart functions lost after a previous supplier switch—you can request a free upgrade to SMETS2 through your OVO account. SMETS2 offers better long-term reliability and broader third-party accessory compatibility.
