Smart meters are becoming more common in homes & businesses across the UK. If your energy supplier has offered you one, you might be wondering what the process involves, how long it takes, and whether there are any problems to watch out for.
This guide walks you through smart meter installation step by step, using plain language and real-world detail, so you know exactly what to expect before, during, and after the visit.
What is a Smart Meter?
A smart meter is a modern gas or electricity meter that automatically sends readings to your energy supplier. This means:
- No more manual meter readings
- More accurate bills
- Better insight into how much energy you use
Smart meters also come with a small in-home display that shows your energy usage in near real time. This helps many households understand where energy is being used and where they might save money.
In the UK, smart meters are part of a national rollout supported by the government.
Before the Smart Meter Installation
Booking the Appointment
Your energy supplier will usually contact you by email, letter, or phone to offer a smart meter installation. You can often book a date online.
Appointments are normally available on weekdays, and some suppliers offer weekend slots.
Before confirming, check:
- Someone over 18 must be at home
- The engineer needs access to your existing meters
- Pets should be kept away during the visit
Preparing Your Home or Business
There is not much you need to do, but a little preparation helps things go smoothly.
Make sure:
- The area around your gas and electricity meters is clear
- Cupboards or under-stairs spaces can be opened easily
- Parking is available nearby if possible
If your meters are outside, the engineer may still need access inside to install the display.
The Day of Installation: Step by Step
Step 1: Engineer Arrival and Safety Checks
On the day, a trained engineer will arrive at the agreed time. They will show you their official ID before starting work.
First, they will:
- Explain what will happen
- Check your existing meters
- Carry out safety checks on your gas and electricity supply
You can ask questions at this stage if anything is unclear.
Step 2: Power and Gas May Be Turned Off Briefly
During the smart meter installation, your electricity and gas will usually be turned off for a short time.
Typical downtime:
- Electricity: 30–60 minutes
- Gas: 30–45 minutes
This is normal and planned. The engineer will warn you before switching anything off.
Step 3: Removing the Old Meters
The engineer will carefully remove your old meters and replace them with new smart meters. This is done using approved tools and safety procedures.
If your wiring or pipework is old or damaged, the engineer may need to stop and report it. This does not happen often, but it can delay installation.
Step 4: Installing the Smart Meters
The new smart electricity and gas meters are installed in the same place as the old ones.
Once fitted, the engineer will:
- Test the meters
- Restore your power and gas
- Make sure everything is working safely
Step 5: Setting Up the In-Home Display
The final step is setting up the in-home display. This small screen shows:
- Current energy use
- Daily and weekly usage
- Estimated costs
The engineer will explain how to use it and where to place it for the best signal.
How Long Does a Smart Meter Installation Take?
One of the most common questions people ask is how long does a smart meter installation take?
In most homes or businesses:
- Dual fuel (gas and electricity): 1.5 to 2 hours
- Single fuel (electricity only): Around 1 hour
It may take longer if:
- Meters are hard to access
- There are safety issues
- Only one meter can be fitted on the day
Your supplier should inform you if extra time is likely.
After the Installation
Once the engineer leaves, your smart meters will start sending readings automatically. However, it can take a few days or weeks for everything to fully update on your energy account.
During this time:
- Your in-home display may take time to sync
- Online accounts may still show estimated readings
- You might be asked to submit one final manual reading
This is normal and usually resolves on its own.
Common Smart Meter Installation Problems
While most installations go smoothly, it is helpful to know about possible smart meter installation problems so you are not caught off guard.
1. Signal Issues
Smart meters use a secure wireless network. In some areas, especially rural locations or thick-walled homes, signal strength can be weak.
This may cause:
- Delayed readings
- In-home display not updating
Suppliers often fix this with signal boosters or alternative solutions.
2. Old Wiring or Pipework
If your home has very old wiring or gas pipes, the engineer may not be able to complete the installation safely.
In this case:
- The installation may be paused
- You may need repairs before rebooking
Your supplier will explain the next steps.
3. Only One Meter Installed
Sometimes only the electricity meter is installed, and the gas meter is fitted later. This can happen due to technical issues or access problems.
While inconvenient, it is usually temporary.
4. Display Not Working Properly
Some people notice their in-home display:
- Loses connection
- Shows incorrect data
- Stops updating
These issues are often fixed remotely or with a replacement display.
Are Smart Meters Safe?
Yes. Smart meters in the UK must meet strict safety standards. They use low-power radio signals, similar to mobile phones or Wi-Fi routers, and are considered safe by public health authorities.
Installations are carried out by trained and certified engineers.
Can You Refuse a Smart Meter?
Smart meters are not currently mandatory in the UK. You can refuse installation if you choose.
However, many people find benefits such as:
- More accurate bills
- Easier energy tracking
- Less hassle with readings
It is worth weighing the pros and cons before deciding.
Tips for a Smooth Installation Experience
To make your smart meter installation as easy as possible:
- Clear access to meters in advance
- Ask questions during the visit
- Check the display before the engineer leaves
- Keep the information leaflet provided
If something does not seem right afterward, contact your supplier sooner rather than later.
Final Thoughts
Smart meters are designed to make managing energy simpler, not harder. For most households, installation is straightforward, quick, and problem-free.
Knowing how long a smart meter installation takes, understanding the steps involved, and being aware of possible smart meter installation problems can help you feel more confident about the process.
If you are offered a smart meter, this guide should help you decide whether it is right for your home or business, and what to expect if you go ahead.