Who is my gas and electricity supplier?
Short answer
Check your latest bill first. Without one, search your postcode on Find My Supplier or call the Meter Number Helpline on 0870 608 1524 for gas. For electricity, find your network operator, then search its website for your supplier. At a new address, the company already supplying the property is your supplier from the day you move in.
0870 608 1524
Meter Number Helpline for gas, Monday to Friday, 8:30am to 5pm
7p a minute plus your phone company's access charge
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Separate lookups: gas by postcode, electricity through your network operator
£0
What you owe for energy used before you moved in
Your supplier is the company that bills you for the energy you use. It is not the network operator that runs the local pipes and cables, and your gas and electricity can come from two different companies, so the two lookups below are separate. Both cover England, Scotland and Wales.
How do I find out who my gas supplier is?
Gas supply records for Great Britain are held in one place, by Xoserve, and you can search them by the property's postcode.
- Start with a recent bill or your online account. It names your supplier and your tariff, which are the details a new supplier asks for when you switch.
- No bill? Search the postcode on Find My Supplier, a free website run by Xoserve. It shows the gas supplier for the address, the Meter Point Reference Number (MPRN) and the gas transporter, which is the network company responsible for the local pipes.
- Prefer to phone? The Meter Number Helpline is 0870 608 1524, Monday to Friday, 8:30am to 5pm. Calls cost 7p a minute plus your phone company's access charge.
- Keep a note of the MPRN. It is the number that identifies your gas supply, and you may be asked for it when you sign up with a new gas supplier.
- Because the search works from the postcode, you can use it for a home you are about to move into as well as your current one. You have to confirm you have a legitimate reason for the search.
- If there is no record for the address, contact the supplier you want to use. Xoserve says that supplier will make the arrangements, including finding out who supplies you now.
Sources: Citizens Advice: find out who your gas or electricity supplier is (read 28 September 2026); Xoserve: information for gas consumers (read 28 September 2026); Find My Supplier, run by Xoserve (read 28 September 2026); Citizens Advice: get your home connected to a gas or electricity supply (read 28 September 2026); Ofgem: switch your home energy supplier (read 28 September 2026)
How do I find out who my electricity supplier is?
Electricity takes two steps: find your regional network operator first, then use that operator's supplier search.
- Your electricity bill is the quickest check. It names the supplier and shows the Meter Point Administration Number (MPAN), the number that identifies your electricity supply.
- Your network operator owns and runs the cables in your area. It does not sell you electricity, and you would usually contact it about a power cut rather than a bill.
- If you already know one company supplies both your gas and electricity, Citizens Advice suggests using the gas lookup instead, because it is simpler.
Sources: Citizens Advice: find out who your gas or electricity supplier is (read 28 September 2026); Citizens Advice: check if you are responsible for paying an energy bill (read 28 September 2026); Citizens Advice: get your home connected to a gas or electricity supply (read 28 September 2026); Ofgem: energy terms explained (read 28 September 2026)
- 1
Find your electricity network operator
Enter the property's postcode on the Energy Networks Association's network operator checker. It tells you which company runs the cables in your area.
- 2
Search that operator's website for your supplier
Most network operators let you search by postcode, though some ask you to fill in a form instead. The result names your electricity supplier and gives you the MPAN for the address.
Who supplies my new home when I move in?
Nobody asks you to choose. The company already supplying the property carries on, and the law treats you as its customer from the day you start using energy there, even though you have signed nothing.
- Ofgem calls this a deemed contract. It normally exists when you move into a property and start using gas or electricity without agreeing a contract with a supplier, and it comes from the Gas Act 1986 and the Electricity Act 1989.
- You start on that supplier's default tariff. Ofgem says the most common kind is a deemed tariff that is standard variable, and that deemed contracts and default tariffs are usually among a supplier's most expensive.
- Contact the supplier to say you have moved in, and give it meter readings taken on the day you move in. Citizens Advice says this helps it send you an accurate first bill.
- You do not have to pay for energy used before you moved in. If a bill includes it, tell the supplier when you moved in, and send your tenancy agreement or mortgage contract if it asks for proof.
- Renting? Check your rental agreement or ask your landlord who the supplier is and who pays. If your landlord pays the supplier, only your landlord can switch it.
Sources: Ofgem: guidance on deemed contracts (November 2023) (read 28 September 2026); Ofgem: energy terms explained (read 28 September 2026); Citizens Advice: moving home, dealing with your energy supply (read 28 September 2026); Citizens Advice: check if you are responsible for paying an energy bill (read 28 September 2026); Ofgem: switch your home energy supplier (read 28 September 2026); Citizens Advice: switching energy supplier or tariff if you are renting (read 28 September 2026)
Can I switch energy supplier before I move in?
Not before you take the property on, but you can do almost all of the work in advance, and that is the part Taupia is built for.
- Citizens Advice says you have to wait until the day you become responsible for the property before you switch supplier or tariff.
- Add your new address and move-in date, and Taupia tells you which supplier already serves the property, before you move.
- Taupia compares the market against that starting point and finds deals that suit your home, so you can see whether the default tariff is worth keeping.
- It lets you line up a switch dated for your move-in day. Nothing changes without your approval.
- If the switch is declined, usually over a balance on the account from before you arrived, Taupia tells you what to say, what to send and which reading to give. You make the call to the supplier yourself, with that wording in front of you.
- There is no middleman and no markup. You pay the supplier's own rates directly, and the supplier stays yours.
- The rest of the move sits in the same checklist, including council tax, water and your TV Licence.
Sources: Citizens Advice: moving home, dealing with your energy supply (read 28 September 2026)
Which route fits your situation?
| Your situation | How to find the supplier |
|---|---|
| Your current home | Check a recent bill or your online account first. No bill? For gas, search the postcode on Find My Supplier or call 0870 608 1524. For electricity, find your network operator by postcode and use its supplier search. |
| A new home, before you move in | Ask your landlord or letting agent, or run the same postcode lookups for the new address. Taupia tells you which supplier serves it when you add the address and your move-in date. |
| You have moved in and have no idea | Run the postcode lookups or ask your landlord. Then contact that supplier with your move-in date and the meter readings you took on the day you arrived. |
| Your landlord pays the energy bills | Your landlord deals with the supplier, and only your landlord can switch it. Ask them who it is if you want to know. |
Questions about finding your energy supplier
Who is my gas supplier?
Check your latest gas bill or online account. Without one, search your postcode on the Find My Supplier website, or call the Meter Number Helpline on 0870 608 1524, Monday to Friday, 8:30am to 5pm. Calls cost 7p a minute plus your phone company's access charge. You can get your MPRN from either.
Who is my electricity supplier?
Check your latest electricity bill. Without one, find your electricity network operator on the Energy Networks Association website using the property's postcode, then search that operator's website for your supplier. Some operators ask you to fill in a form instead. The search also gives you your MPAN.
Who supplies my energy when I move into a new home?
The company already supplying the property. From the day you start using energy there you are on a deemed contract with it, normally on its default tariff, which Ofgem says is usually among a supplier's most expensive. Tell the supplier you have moved in and give it meter readings from the day you arrived.
Can I find out who supplies a property before I move in?
Yes. Find My Supplier works from the property's postcode, and most network operators' supplier searches do too, so you can usually check a new address in advance. Your landlord or letting agent may already know. Taupia also tells you which supplier serves the address when you add it with your move-in date.
Is my network operator the same as my energy supplier?
No. Your network operator runs the pipes or cables that bring energy to your area, and you would usually contact it about a power cut or supply problem. Your supplier is the company that bills you. Your electricity network operator can tell you who your supplier is.
What are the MPRN and MPAN?
The MPRN identifies your gas supply and the MPAN identifies your electricity supply. Energy companies use them to identify your home, and both are on your energy bill. You may be asked for your MPRN when you sign up with a new gas supplier.
Do I have to pay the previous occupier's energy bill?
No. Citizens Advice says you do not have to pay for energy used before you moved in. Tell the supplier when you moved in, give it a meter reading, and send your tenancy agreement or mortgage contract if it asks for proof.
What if Find My Supplier has no record of my address?
Contact the gas supplier you want to switch to. Xoserve, which runs Find My Supplier, says that supplier will make the arrangements, including finding out who supplies you now.
Can I switch supplier before I move in?
Not before the day you become responsible for the property. You can get a switch ready in advance, though: Taupia lets you line one up dated for your move-in day, and nothing changes without your approval.
Official lookups and related guides
Use the official services to check the record, and these guides for what to do once you know who your supplier is.
Start here
Set up gas and electric in a new home
RecommendedOnce you know the supplier: meter readings, the tariff you start on and whether to keep it.
First-time renter bills setup
Every bill in a first rented home, what drives its price and where you get a choice.
Switch declined after moving in?
Why a move-in switch gets objected to, and what to say to clear it.
Does the price cap apply when you move in?
What the default tariff you start on is capped at, and what the cap does not cover.
Ofgem's list of UK gas licensees
Every licensed gas company, for when you want the whole market rather than your own supplier.
Official references
Find My Supplier
OfficialThe gas industry's postcode lookup for your gas supplier, MPRN and gas transporter, run by Xoserve.
Citizens Advice: find out who your supplier is
OfficialOfficial guidance on the gas and electricity lookups for England, Scotland and Wales.
Energy Networks Association: find your network operator
OfficialEnter a postcode to see which electricity network operator covers the property.
Moving soon? Know your supplier before you arrive
Add your new address and move-in date. Taupia tells you which supplier already serves the property, compares tariffs against that starting point and lets you line up a switch dated for your move-in day. You pay the supplier's own rates, with no markup. Nothing changes without your approval.