The two-minute version: ring the supplier already serving the address (or sign up online) on the day you move in, give your name, the date and a photographed meter reading, and the account opens fresh in your name. The last tenant’s arrears cannot transfer to you, a prepay meter may need its old settings cleared before you top up, and once the account is yours you can switch supplier straight away — you have no contract, so there is no exit fee.
What is a change of occupancy?
A change of occupancy is the energy industry’s name for what happens when the people in a house change but the house does not: a tenant moves out, a new tenant moves in, and the electricity and gas connections carry on regardless. The wires and the meter belong to the address — identified by the MPRN (11 digits, starts with 10) for electricity and the GPRN (7 digits) for gas — and they stay live through the handover. What changes is purely administrative: one account closes on a final meter reading, and a new account opens on the same reading, in a new name.
That makes it different from two things it gets confused with. It is not a switch — no supplier changes hands on day one; the incumbent simply opens a new account at the same address. And it is not quite the same as an owner-occupier moving house, where you are usually closing an account at one address and opening one at another. As a new tenant you only have the second half of that job — and the previous occupant’s half is not your problem, as long as the opening read draws the line.
One thing this page is not: a tenancy-law guide. Leases, deposits and what a landlord may or may not put in a tenancy agreement are between you, the lease and the relevant tenancy bodies. This is only about the meters, the account and the money that flows through them.
Whose name should the energy account be in?
The rule that untangles every rental energy question: the account belongs in the name of whoever pays the bill. If you, the tenant, pay for electricity and gas, the accounts should be in your name from your first day. If the tenancy is bills-included and the landlord pays, the accounts stay in the landlord’s name — and the trade-off lands on you.
That trade-off is control. Only the named account holder can switch supplier, take a new-customer discount, query a bill or change how the account is billed. A tenant paying “bills included” through the rent cannot shop around, however bad the underlying tariff is — there is nothing in their name to move. If you are choosing between two tenancies and one is bills-included, that convenience has a price you cannot see: the landlord has no incentive to be on a competitive rate, because you are the one funding it.
Getting the account into your name is undramatic. Contact the supplier currently serving the address — the letting agent or landlord can name them, and if nobody knows, ESB Networks can identify the electricity supplier from the address or MPRN and Gas Networks Ireland the gas supplier from the GPRN (our who is my supplier guide walks through it). Tell them the occupancy changed, give your move-in date and your opening reading, and they close the old account and open yours. No engineer, no interruption, no fee.
What should I do about the meters on move-in day?
Everything on this list happens in the first hour with the keys, and none of it takes longer than making tea. The photograph is the one item people regret skipping.
| Move-in day | Why it matters |
|---|---|
| 1. Find the meters — hall cupboard, external box, or shared meter room in apartments | You need physical eyes on every register: day and night dials on a NightSaver meter, electricity and gas separately. |
| 2. Photograph every meter, dials and serial number legible | The photo is your opening read and your evidence, date-stamped in the file’s metadata. It is the wall between your bills and the last tenant’s. See how to read an electricity meter if the dials look cryptic. |
| 3. Note the MPRN and GPRN — from the landlord, agent, or an old bill left in a drawer | 11 digits starting 10 for electricity, 7 digits for gas. They identify the connection and make every later call faster. |
| 4. Contact the incumbent supplier — same day if you can | Name, move-in date, opening read: the account opens in your name from a date you can prove. Every day you wait is a day billed to nobody, on estimates. |
| 5. On a prepay meter: ask for it to be reset before you top up | The meter can still carry the previous tenant’s vend settings or a debt-recovery deduction that would eat your credit. More below. |
| 6. Set a reminder to shop around — week two is fine | You are on standard rates with no contract and no exit fee. The best energy for renters ranking is built for exactly this moment. |
If the previous tenant is still contactable, the gold-plated version is a joint read: both of you agree the closing numbers on handover day and both keep the photo. That single shared figure makes their final bill and your first bill impossible to dispute. But it is a bonus, not a requirement — your own dated photograph does the job alone.
Can the previous tenant’s energy debt follow me?
The myth, put down: previous-tenant arrears do not transfer to a new occupier — not to your bills, not to your credit standing, not to your ability to switch. Energy debt in Ireland attaches to the account holder, never to the address or the meter. The debt flag that can hold up a switch — arrears of €225 or more, over 60 days overdue — follows the person who owes the money. It cannot be raised against you for someone else’s account, no matter what was left owing on the house you have just moved into.
This myth survives because the paperwork looks scary: final demands keep arriving for the old tenant, sometimes a debt collector’s letter with your new address on it. None of it is aimed at you. Return the post, tell the supplier the occupancy changed on your move-in date, and their systems separate the accounts. The supplier pursues the person, not the property.
The one legitimate thing a supplier can do is ask you to prove when your occupancy started — which is exactly what the dated meter photo and a tenancy start date settle in one email. And if it is your own arrears, from a previous address, that you are carrying into the tenancy, that is a different situation with its own playbook: our switching with arrears guide covers payment plans, the flag thresholds and where MABS fits in.
What is the estimated-close trap?
Here is the one way a previous tenant’s energy use genuinely can end up on your bill — and it is the reason this page keeps repeating the word photograph. When nobody supplies a reading at handover, the supplier closes the old account on an estimate and opens yours from the same estimated number. If the last tenant ran the heating hard and the estimate is low, the units between the estimate and reality land on the first account billed against a real read: yours.
Worked through with blanks, because the sums are the point:
| Scenario | Opening read | Who pays the gap |
|---|---|---|
| You photograph the meter on day one | Actual: the number on the dial | Nobody — the boundary is exact. Units before the read bill to the old account, after it to yours. |
| No read given at handover | Estimated: [true read] − [estimate] = the gap in kWh | You, at your unit rate, when the first actual read arrives — the gap × your rate lands on your bill, months after you could prove anything. |
If you are reading this after the fact — already moved in, no photo, and a first bill that looks inflated — take an actual reading now, submit it, and ask the supplier to re-base the opening estimate using your tenancy start date. Suppliers can and do revise opening reads when the estimate is challengeable; it is far easier with any corroborating evidence (a dated inventory, the letting agent’s handover note, even a photo of the hallway with the meter in shot).
What if the house has a prepay meter the landlord fitted?
Prepay (pay-as-you-go) meters are common in rentals because they suit the landlord: no unpaid final bills, no credit risk between tenancies. They suit tenants less well, for two reasons a lease viewing will not show you.
First, the meter can still be carrying the previous tenant’s settings. A PAYG meter is programmed per account: its vend configuration, any emergency credit owed back, and any debt-recovery deduction that takes a slice of every top-up. Change of occupancy does not automatically wipe that. If you top up before the supplier resets the meter, the machine deducts whatever it was told to deduct for someone else’s account — and unwinding it afterwards is slower than preventing it. Ring the prepay supplier before your first top-up, tell them the occupancy changed, and ask them to clear the previous settings and register the meter to you. It is a routine request with its own name in their systems.
Second, prepay is usually the dear way to buy energy. On top of higher unit rates, prepay electricity carries a prepayment service charge that bill-pay customers simply do not pay — on Prepay Power’s current rate cards it runs €131.29 to €164.41 a year inc VAT depending on the plan (verified on their pricing page this week), with a further €70.87 a year on prepay gas; Pinergy’s equivalent is 41c per day ex VAT on top of the standing charge. That line item exists before you have boiled a kettle:
So before you sign a lease on a house with a prepay meter, ask two questions: can the meter be changed to bill-pay, and does the landlord object? Whether it can be changed — and what the incoming supplier needs — varies by supplier and meter, so confirm with the supplier you would move to. The full cost comparison, and the mechanics of moving between the two, live in prepay vs bill pay; the supplier-by-supplier prepay picture is in best prepay electricity, and the Prepay Power and Pinergy reviews cover the two specialists in depth.
Who handles what — tenant or landlord?
Handover goes smoothly when both sides know which jobs are theirs. This is the division that works, whichever side of it you are on:
| Job | Outgoing side (landlord / old tenant) | Incoming tenant |
|---|---|---|
| Closing the old account | The outgoing account holder rings their supplier with a final read and a forwarding address. | Nothing — it is not your account, and you cannot close it. |
| The handover reading | Record it at key handover; share the photo. | Photograph it yourself anyway — never rely on someone else’s number. |
| Naming the supplier + MPRN/GPRN | Pass them on with the keys (an old bill does it in one page). | Chase them if not offered; ESB Networks / Gas Networks Ireland can identify the supplier if nobody knows. |
| Opening the new account | Not their job — a landlord cannot open an account in your name. | You, with the supplier serving the address, on your move-in date. |
| Clearing a prepay meter’s old settings | Good landlords request the reset between tenancies. | Verify before topping up — ask the supplier whether the meter is clean. |
| Void periods between tenancies | The landlord holds (and pays) the account while the property is empty. | Your liability starts at your opening read, not before. |
| Choosing the supplier and tariff | Only if bills are included in the rent. | Yours entirely once the account is in your name — see below. |
Can I switch supplier once the account is mine?
Yes — and new tenants are in the strongest switching position in the market, better than the households our how-to-switch guide was written for. A change of occupancy puts you on the incumbent supplier’s standard rates with no contract: no fixed term, no exit fee, nothing to wait out. Every new-customer discount in the market is available to you from day one, and the only cost of staying put is the standard rate you drift on while you decide.
The sequence that works: open the account with the incumbent this week (so the opening read is anchored and the account is in your name), then switch to whoever is actually cheapest. The switch takes two to four weeks, the supply never cuts, and you get a 14-day cooling-off window on the new contract — 30 days on some doorstep and other off-premises sign-ups. One renter-specific check before you commit: most new-customer deals run 12 months with an exit fee, so match the contract length to the lease you actually have. A 12-month deal against a 9-month lease means paying to leave — the maths, and the suppliers that go easiest on short-notice leavers, are in best energy for renters.
Two honesty notes to finish. Compare year-1 and year-2 pricing before you sign — the teaser discount dies at month 12, and that cliff lands mid-tenancy if you stay put. And matched.ie is not a CRU-accredited price-comparison site: we rank the nine suppliers we verify and explain the process, but the accredited comparators are listed on cru.ie if you want a regulated switching tool. Our own starting points are best energy in Ireland and the 30-second find your energy matcher.
Where to next?
- Best energy for renters — the ranking built around short leases, exit fees and change-of-tenancy friendliness.
- Moving house with energy — the owner-occupier version: closing one address, opening another.
- Prepay vs bill pay — what the landlord-fitted meter really costs, and how to move between the two.
- Switching with arrears — if the debt in the story is your own, from a previous address.
- How to switch energy supplier — the full mechanics once the account is in your name.
