Can I switch energy supplier if I have a smart meter in the UK?

Yes. In the UK you can switch energy supplier even if you have a smart meter. Your new supplier will normally take over the meter and your supply as usual, and the switch process works much the same as for traditional meters.

Will my smart meter still work as a smart meter after I switch?

In most cases, yes—especially if you have a SMETS2 smart meter (the newer standard). If you have an older SMETS1 meter, it may temporarily lose ‘smart’ functions (like automatic readings) when you switch, but it should still record usage like a normal meter and may regain smart features once enrolled in national systems.

What’s the difference between SMETS1 and SMETS2 when switching?

SMETS2 meters are designed to work across suppliers, so they usually keep smart features after switching. SMETS1 meters were installed earlier and can sometimes lose smart functionality when you move supplier, although many are now being updated to work more widely.

Will I need a smart meter replacement when I switch supplier?

Usually not. Most switches do not require any meter replacement. If your meter can’t communicate with your new supplier, they may still complete the switch and then advise on next steps, which could include remote updates or (less commonly) a meter exchange.

How long does it take to switch energy supplier with a smart meter?

Switching times vary by supplier and circumstances, but many switches complete within a few working days. Smart meters don’t normally slow the process down, and your supply won’t be interrupted during the switch.

Will I lose my in-home display (IHD) if I switch?

You usually keep your in-home display, but how well it works can vary after switching. With SMETS2 meters it often continues to show usage and costs; with some SMETS1 setups, the IHD may show limited information until smart functionality is fully restored.

Do I need to give meter readings when switching from a smart meter?

You may be asked to provide opening/closing readings, even with a smart meter, to make sure your final bill is accurate. If your smart meter is communicating correctly, readings can often be taken automatically.

Will switching supplier affect my smart meter tariff (like time-of-use)?

It can. Some smart tariffs (including time-of-use pricing) are supplier-specific. If you switch, you’ll move to the new supplier’s available tariffs. If you want a smart or time-of-use tariff, check what your new supplier offers before switching.

Can I switch if my smart meter is prepayment (PAYG)?

Often yes, but it depends on your circumstances and the supplier. Some suppliers support smart prepayment switches more easily than others. If you’re in debt or have certain meter configurations, you may need to clear balances or follow extra steps first.

How do I switch energy supplier with a smart meter?

Compare tariffs, choose your new supplier, and apply online. You’ll provide your address and (if requested) a recent meter reading. Your new supplier handles the switch, and your energy supply continues as normal. To explore your options with Energy Plus, start here: https://www.energyplus.co.uk/

Can I switch energy supplier if I’m on a smart meter?

Yes—most UK households can switch with a smart meter. This guide explains what happens to your smart features, how to avoid billing issues, and what to check before you switch.

Switching normally won’t remove your smart meter—your new supplier takes over the supply.
Some smart features can temporarily stop if the meter isn’t fully interoperable (more common with older SMETS1).
Take meter readings, check your tariff terms, and confirm how your meter will be read after the switch.

Get your energy quote How switching works with smart meters

Information is UK-focused and general. Tariffs, eligibility and smart functionality can vary by supplier, meter type and region.

Fast answer: yes, you can usually switch with a smart meter

In the UK, you can switch energy supplier even if you have a smart meter. The meter is part of your property’s energy setup—your new supplier becomes responsible for billing and (usually) smart meter readings.

Key caveat: if you have an older smart meter (often SMETS1), the “smart” features (like automatic readings or your in-home display) may temporarily stop working after you switch—this is commonly described as the meter going “dumb”. It can often be resolved when your meter is enrolled into the national smart system.

Key takeaways before you switch

1) Check your meter type

SMETS2 is designed to keep smart readings when you switch. SMETS1 is more likely to lose smart functionality for a while.

2) Take a reading on switch day

Even with smart meters, submit a manual reading (and photo) to reduce the risk of estimated bills and disputes.

3) Confirm tariff terms

Look for exit fees, fixed end dates, and whether you’re on prepayment or paying by Direct Debit.

If you want, you can compare whole-of-market home energy deals on EnergyPlus and we’ll highlight what to ask suppliers about smart meter compatibility.

How switching works when you have a smart meter

Switching supplier doesn’t usually involve changing your smart meter. Your energy continues as normal—the change is mainly administrative: who bills you, and how readings are collected.

What typically happens

Choose a tariff and apply (online or by phone).
Cooling-off period applies to most distance sales (so you can change your mind).
Switch date is agreed (you shouldn’t lose supply).
Take opening/closing readings (we recommend doing this even with a smart meter).
Final bill + new account are produced using the agreed readings.

Good to know: If your smart meter stops sending readings after you switch, your supplier may temporarily ask for manual readings. This is usually fixable and doesn’t mean you can’t switch.

Who switching with a smart meter suits (and who should pause)

Switching is usually a good fit if you…

have a standard credit meter or smart meter paying by Direct Debit
can provide a reading (or photo) on switch day
want access to a wider choice of tariffs and customer service options
have a SMETS2 meter (most likely to stay “smart” when you switch)

Consider pausing (or double-checking) if you…

are on prepayment and rely on specific top-up methods
use (or need) a smart time-of-use tariff (e.g., EV charging) that requires half-hourly data
have debt on your meter or repayment arrangements
aren’t sure what type of smart meter you have (SMETS1/SMETS2)

How to tell if you have SMETS1 or SMETS2

Check your installation date (rough guide): SMETS2 became common later; earlier installs are more likely SMETS1. This isn’t definitive—some suppliers installed SMETS2 earlier than others.
Look at your meter documentation: Your welcome pack, emails, or account may mention SMETS1/SMETS2. If in doubt, ask your supplier.
Ask your current supplier what happens after a switch: Useful wording: “If I switch, will the meter stay smart and send readings automatically? Is it enrolled in the DCC?”

Compare tariffs with your smart meter in mind

Fill in your details and we’ll help you compare home energy options. We’ll also show you what to check if smart readings matter to you (for example, prepayment or time-of-use).

Quick prep: If you can, note your current supplier, tariff name, and whether you pay by Direct Debit or prepayment. This makes it easier to spot like-for-like comparisons.

Two realistic switching scenarios (with numbers)

These examples are illustrative to help you plan. Real prices depend on your region, payment method, tariff, and consumption.

Scenario A: SMETS2 credit meter (Direct Debit)

Home: 2–3 bed, standard credit smart meter (SMETS2)
Usage assumption: 2,900 kWh electricity + 12,000 kWh gas per year
Current costs: estimated £165/month (combined)
New tariff quote: estimated £150/month (combined)

Estimated difference: about £15/month (˜ £180/year) if the unit rates and standing charges stay as quoted and your usage matches the assumptions.

Smart impact: SMETS2 is designed to keep sending readings after a switch, so billing is usually smoother (still take a reading on switch day).

Scenario B: SMETS1 meter (smart features may pause)

Home: 1–2 bed flat, smart meter (SMETS1), credit meter
Usage assumption: 1,800 kWh electricity per year (electricity-only)
Current costs: estimated £85/month
New tariff quote: estimated £78/month

Estimated difference: about £7/month (˜ £84/year), but you may need to submit manual readings for a period if the meter loses smart interoperability after switching.

Smart impact: If readings stop, your bill may rely on estimates until manual readings are provided. Keep photos and dates of readings to reduce hassle.

Important: A small price difference can be outweighed by factors like exit fees, billing accuracy, customer support, and whether you rely on smart features (prepay top-ups, time-of-use billing, or half-hourly data).

SMETS1 vs SMETS2: what it means for switching

Your ability to switch is broadly the same—but what changes is how reliably your meter keeps sending smart readings after the switch.

What you’re comparing	SMETS1	SMETS2
Can you switch supplier?	Yes (in most cases)	Yes
Likelihood meter stays “smart” after switching	Lower (may temporarily lose automatic readings)	Higher (designed for interoperability)
If smart readings stop, what happens?	You may submit manual readings; bills may be estimated until then	Usually continues automatically; still wise to record a reading on switch day
Impact on in-home display (IHD)	May lose live data or show limited info after switching	More likely to keep working, but depends on supplier setup
What to ask the new supplier	“Will my SMETS1 meter remain smart after switching? If not, what’s your process for readings?”	“Will you take smart readings automatically and support half-hourly data if needed?”

Switching checklist (smart-meter specific)

Before you apply

Check whether you have gas, electricity, or dual fuel—and whether you want to switch both together.
Confirm your payment method (Direct Debit, receipt of bill, prepayment).
Look for exit fees and the fixed-term end date on your current tariff.
If you use a time-of-use or EV tariff, ask about half-hourly data requirements.

On (and after) switch day

Take meter readings (and photos) for gas and electricity.
Keep your welcome email/contract and your old supplier’s final bill.
Check your first new bill uses the same opening reading you provided.
If your IHD stops updating, ask your supplier how they handle smart display pairing.

Costs, exclusions and common pitfalls (UK)

Switching supplier is usually straightforward, but these are the most common reasons smart-meter switches feel “messy”. Planning for them prevents surprises.

Exit fees & contract terms

Fixed tariffs can have exit fees if you leave early. Some deals waive fees near the end date—check your terms before switching.

Estimated bills after switching

If smart readings aren’t received immediately (often SMETS1), your new supplier may estimate usage. Send manual readings to keep bills accurate.

Prepayment complications

Not all suppliers support every smart prepayment setup. If you top up in-store or via app, confirm your top-up method will still work after switching.

Time-of-use tariffs & data permissions

Some tariffs need half-hourly meter data. You may need to consent to sharing this data for billing. Ask how your data will be used and whether you can change permissions later.

Direct Debit changes and credit balances

Your old supplier should issue a final bill and return any credit (or request payment if you owe money). Keep an eye on Direct Debits so you don’t pay the wrong supplier after the switch.

Practical tip: Take a photo of each meter on switch day showing the full display. If there’s a billing dispute later, this is often the quickest way to resolve it.

When you might not be able to switch immediately: In some cases (for example, complex meter setups, certain debts, or supplier-specific restrictions), a switch can be delayed. If your switch fails, ask for the reason in writing and what needs to change to proceed.

Smart meter switching FAQs (UK)

Will my smart meter be removed if I switch supplier?

Usually no. The meter stays in your home and your new supplier takes over the supply. Replacing a meter is uncommon during a standard switch.

What does it mean if my smart meter goes “dumb” after switching?

It means the meter may stop sending automatic readings to your supplier (and your in-home display may lose live data). You can still use energy as normal—your supplier may ask for manual readings for billing until smart communications are restored.

Can I switch if I have a smart prepayment meter?

Often yes, but it can be more supplier-dependent. Ask the new supplier whether they support your smart prepay setup and how you’ll top up (app, PayPoint/Payzone, etc.). If you have debt on the meter, switching may be restricted until it’s addressed.

Do I need to give meter readings if I have a smart meter?

It’s still a good idea at switching time. Provide opening/closing readings (and photos). This reduces the chance of estimated bills and helps if there’s a dispute between suppliers about the handover read.

Will my in-home display (IHD) work with the new supplier?

Sometimes it continues as normal; sometimes it may need re-pairing or may show limited information. It varies by meter type and supplier systems. If the IHD is important to you, ask the new supplier what they support and whether they can help re-connect it.

Can switching affect my smart time-of-use tariff (like EV charging rates)?

Yes. Time-of-use deals can require half-hourly readings and specific meter configurations. If you’re on (or want) a time-of-use tariff, confirm the new supplier supports it for your meter type and explain any data-sharing permissions needed.

How long does an energy switch take in the UK?

Times can vary by supplier and circumstances. Many switches are completed without a home visit. Your supplier should confirm the timeline and switch date during the application process.

What if my switch fails or I’m billed incorrectly?

Start by contacting the supplier and providing your switch-day readings and photos. Keep copies of bills and emails. If you can’t resolve it, follow the supplier’s complaints process and use independent guidance (see sources below) for next steps.

Trust, methodology and sources

Page governance

Written by: EnergyPlus Editorial Team
Reviewed by: Energy Specialist
Last updated: February 2026

How we assess “can I switch with a smart meter?”

We focus on what a typical UK household needs to know to switch successfully, using regulator and consumer guidance plus common real-world switching issues reported by households.

Scope: Domestic (home) gas and electricity in Great Britain. (Northern Ireland has different market arrangements; supplier availability and processes can differ.)
Key variables considered: meter type (SMETS1/SMETS2), payment method (Direct Debit vs prepayment), tariff type (standard vs time-of-use), and practical billing steps (opening/closing reads).
Limitations: Supplier policies change; some edge cases (complex meters, specific prepay configurations, debt situations) can affect eligibility and timing. This page is guidance, not a guarantee of acceptance by any supplier.
Numbers in examples: Scenarios use typical consumption figures and hypothetical monthly costs to illustrate planning. They are not predictions and won’t match every household.

Sources and further UK guidance

Ofgem (UK energy regulator) — switching, smart meters and consumer protections.
Citizens Advice: energy — help with bills, switching issues and complaints.
GOV.UK — broader consumer and household guidance (search for energy-related support relevant to your situation).

We link to independent sources to help you verify details and understand your rights if anything goes wrong.

Ready to compare? Your smart meter doesn’t have to stop you switching

Get a whole-of-market home energy comparison and go in prepared—especially if you’re SMETS1, prepayment, or considering time-of-use tariffs.

Start my comparison Re-check the key takeaways

We aim for clarity and accuracy. Prices are estimates and depend on your meter setup, tariff availability, region, and supplier terms.

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Updated on 26 Feb 2026