Are Smart Meters Worth It? Honest UK Pros and Cons (UK Guide)
Smart meters divide opinion. Some people swear they save money. Others think they’re pointless, intrusive, or just another way for energy companies to stay in control.
I’ve had a smart meter installed for over five years, and my view has changed. When I first got one, I wasn’t impressed. In 2026, with higher energy prices, EV tariffs and demand-flex schemes, most households are now better off with a smart meter, but not everyone.
This guide gives a straight answer, based on real use, not marketing.
Quick Answer: Are Smart Meters Worth It?
Yes, for most people… with caveats.
A smart meter won’t magically cut your bills. What it does do is give you accurate billing, unlock cheaper tariffs (especially for EVs), and make it easier to spot wasted energy. If you completely ignore the data or you’re worried about prepayment switching, the benefits are more limited.
Smart Meter Pros and Cons (Quick View)
Pros
✅ Accurate bills (no estimates)
✅ No manual meter readings
✅ See energy use in near real time
✅ Free installation
✅ Required for many cheaper tariffs
✅ Needed for demand-flex rewards
Cons
❌ Older meters can lose smart features
❌ Can be switched to prepay remotely
❌ Savings require some engagement
❌ Privacy concerns for some people
Should You Get a Smart Meter?
Situation | Worth It? | Why |
|---|---|---|
You want accurate bills | ✅ Yes | No more estimates or big balances |
You own or plan an EV | ✅ Yes | Cheap overnight tariffs need one |
You want demand-flex rewards | ✅ Yes | Smart meter required |
You switch suppliers often | ⚠️ Maybe | Fine with SMETS2, annoying with SMETS1 |
You worry about forced prepay | ❌ Maybe not | Can be done remotely |
You won’t check usage at all | ❌ Limited | Savings need engagement |
What Is a Smart Meter?
A smart meter measures how much gas and electricity you use and automatically sends readings to your energy supplier. That means:
• No estimated bills
• No meter readers
• More accurate Direct Debits
You can have a smart credit or prepayment meter, just like with traditional meters.
Most homes also receive an In-Home Display (IHD), a small screen showing usage and estimated costs.
A smart meter is not the same thing as a smart thermostat, which controls heating rather than measuring energy.
Smart Meter vs In-Home Display (IHD)
This is a common point of confusion.
• Smart meter – fixed unit measuring energy usage
• IHD – portable screen showing that data
Your smart meter works even if you don’t use an IHD. If yours breaks or goes missing, you can request a replacement or buy an upgraded display.
Are Smart Meters Safe?
Yes.
Smart meters emit very low levels of radio waves, far less than everyday devices like phones, Wi-Fi routers or TVs. There’s no credible evidence they’re harmful.
On a personal note, when our gas smart meter was installed, the engineer found a small gas leak during routine checks. Our boiler was in our son’s room. That alone made the installation worthwhile for me.
Do Smart Meters Increase Energy Bills?
No.
Energy bills went up because energy prices rose, not because of smart meters. What smart meters do is remove under-billing caused by estimates. That can feel like a price rise, but it’s simply accurate billing catching up.
Are Smart Meters Free to Install?
There’s no upfront cost.
The rollout has been government-backed, with costs spread across energy bills over time. You won’t be charged for the meter or the engineer visit.
Installation Time and Size
• Installation time: usually 1–2 hours
• Electric meters: often slightly larger
• Gas meters: usually slightly smaller
In most homes, the smart meter fits where the old one was.
How Smart Meters Can Help You Save Money
Accurate Billing
Estimated bills often benefit suppliers. Smart meters ensure you pay for what you actually use, avoiding large credit or debit balances.
Spotting Wasted Energy
Seeing usage spikes when appliances switch on is eye-opening. Standby power, tumble dryers and older appliances often surprise people.
If you’re serious about reducing usage, combine a smart meter with other ways to reduce energy consumption, such as better insulation, efficient appliances and smarter habits.
Access to Cheaper Tariffs
Many of the cheapest and most flexible tariffs require a smart meter, particularly EV tariffs like Intelligent Octopus from Octopus Energy.
Without a smart meter, these simply aren’t available.
Demand Flexibility & Saving Sessions
The National Grid’s Demand Flexibility Scheme pays households to reduce electricity use at peak times.
You need a smart meter to take part.
I’ve joined Saving Sessions through Octopus and earned account credit just by shifting usage for an hour or two.
When Smart Meters Can Be a Problem
Remote Prepayment Switching
If you fall behind on bills, suppliers can switch smart meters to prepayment remotely. With traditional meters, they’d need a warrant to enter your home.
This is the biggest legitimate downside and something vulnerable households should be aware of.
Older SMETS1 Meters
Early smart meters can lose smart functionality if you switch supplier, effectively becoming “dumb”.
SMETS1 vs SMETS2 (Important)
SMETS1 (2013–2017)
❌ May lose smart features when switching supplier
SMETS2 (2017 onwards)
✅ Works with all suppliers
If you’re offered a smart meter today, always ask for SMETS2.
Are Smart Meters Compulsory?
No.
You can refuse unless:
• Your current meter is faulty
• It’s at end of life and no traditional replacement is available
Otherwise, it’s your choice.
How to Read a Smart Meter (Quick Guide)
Electricity
Press 9 → IMP KWH
Take the first 7 digits
Gas
Press 9 → VOLUME
Take the first 5 digits
Economy 7
Press 6
• R01 = night
• R02 = day
Smart Meters, Solar Panels and Smart Homes
If you have solar panels, a smart meter makes tracking generation and export far easier, especially if you’re paid for surplus electricity.
Smart meters also pair well with smart thermostats and energy-saving tech, helping you see the real impact of changes you make.
Final Verdict: Are Smart Meters Good or Bad?
Smart meters aren’t perfect. They won’t reduce your bills on their own, and the prepayment risk is real.
But in 2026, they unlock cheaper tariffs, demand-flex rewards and accurate billing — benefits that didn’t exist a few years ago.
If you’re willing to engage even a little, a smart meter is now more help than hassle for most UK households.
For official guidance, see GOV.UK.
FAQ
Are smart meters worth it in the UK?
For most households, yes. Smart meters give accurate bills, remove estimates, and unlock cheaper tariffs and demand-flex rewards. They won’t save money automatically, but they make it easier to do so.
Do smart meters increase energy bills?
No. Energy prices increase bills, not smart meters. What smart meters do is stop under-billing caused by estimates, which can feel like a price rise but is actually accurate billing.
Can I refuse a smart meter?
Yes. Smart meters are not compulsory unless your existing meter is faulty or at the end of its life and no traditional replacement is available.
Are smart meters safe?
Yes. Smart meters emit very low levels of radio waves — far less than everyday devices like mobile phones or Wi-Fi routers. There’s no credible evidence they’re harmful.
Can energy companies switch me to prepayment remotely?
Yes, this is possible with smart meters if you fall behind on bills. This is the main downside and something to be aware of, particularly for vulnerable households.
What is the difference between SMETS1 and SMETS2?
SMETS1 meters (installed mainly before 2017) can lose smart features when you switch supplier. SMETS2 meters work with all suppliers and are the type you should request.
Do I need a smart meter for EV tariffs?
Yes. Most electric vehicle tariffs with cheap overnight rates require a smart meter so suppliers can track usage by time of day.
Are smart meters useful if I have solar panels?
Yes. Smart meters make it easier to track electricity usage, exports, and payments for surplus energy, especially if you’re paid for what you send back to the grid.
Will a smart meter save me money on its own?
No. A smart meter won’t reduce bills by itself. Savings come from using the data to change habits or access cheaper tariffs.
I am being pestered by both my electricity and gas suppliers to agree to have smart meters fitted. I have a few questions that might help me to decide.
1. How frequently do SMETS2 meters send in readings? Is it user-selectable? I don’t want anyone to be able to look at my hourly usage and deduce anything about my habits – such as whether I’m at home or not.
2. What information do the smart meters recieve back from the suppliers, and hold on board? For gas, do they store the latest calorific value and temperature corrections? If not, they cannot give accurate information on gas usage. Do they store details of tariffs, account nuimbers etc.? I don’t want this information to be available outside the house.
3. What functionality (besides acting as a meter) do the smart meters have? Can smart meters be used to disconnect a gas or electricity supply remotely?
4. What do electricity suppliers fit in the event that a house has dual rates for electricity that use separate meters (i.e. not Economy 7 but a different off-peak only tariff)?
All and any additional informatio will be helpful to me. These are questions that I’ve never seen answered anywhere.
Hi Alan. I wish I could answer your questions conclusively, but as I’m only a user, I can’t be 100% sure of the claims. But from what I can find from various websites:
1) The option is there to have this information sent to your supplier monthly, daily or half hourly. My smart meter uploads every day.
2) I really can’t be sure what is sent to the smart meter. But I would be surprised if it didn’t hold account numbers and tariff details.
3) Yes, it can be turned off remotely. But according to CAB, before they do this they must have:
contacted you to discuss options for repaying your debt, eg through a repayment plan
and visited your home to assess your personal situation and whether this would affect you being disconnected, eg if you’re disabled or elderly
Of course, that doesn’t mean that they could ‘accidentally’ switch it off.
4) Checking on forums such as Scottish Power and OVO Energy I found that a new smart meter will be a like-for-like swap with your old, ‘dumb’ meter. In most cases, this is a single rate meter. But, two rate smart meters are available for those on a two rate tariff.
If you decide to have a smart meter installed, make sure that they’re aware of your needs before they arrive to double-check though.
I have solar panels on my roof. So my question is do the meters work effectively with solar panels. Thank you
Hi John. My smart meter works well with the solar panels and I’ve had no issues.