One of the most common questions Irish households have before switching is: how long will it take? The answer depends on whether you are switching electricity, gas, or both — and whether any complications arise during the transfer. Here is the exact timeline and what happens at each stage.
Electricity Switch Timeline
Switching electricity supplier in Ireland involves ESB Networks (who operate the physical network) and your two suppliers. The regulated maximum timeline is 21 business days, but in practice most switches complete in 14–17 business days.
Day 0 — Sign up with new supplier You complete the sign-up online with your new supplier, providing your name, address, MPRN (Meter Point Reference Number), current supplier name, and bank details for direct debit. The new supplier submits the switch request to ESB Networks.
Days 1–5 — Cooling-off period Irish consumer protection law provides a 14-day right to cancel. Most switches proceed immediately, but during this initial period you could cancel the switch without penalty if you change your mind.
Days 5–14 — Transfer in progress ESB Networks processes the transfer. Your old supplier is notified. No action is required from you. Your electricity supply continues uninterrupted throughout.
Days 14–21 — Transfer complete ESB Networks completes the meter point registration transfer. Your new supplier takes over billing. You will receive a final bill from your old supplier (based on a meter reading at the transfer date) and your first bill from your new supplier.
Timeline summary:
- Typical: 14–17 business days (3–3.5 weeks)
- Maximum: 21 business days (regulated)
- Interruption to supply: None
Gas Switch Timeline
Gas switches are faster than electricity switches because the process is managed differently by Gas Networks Ireland.
Day 0 — Sign up with new supplier Same process: online sign-up with your GPRN (Gas Point Reference Number) and current supplier details.
Days 1–5 — Transfer processing Gas Networks Ireland processes the transfer. No action required.
Days 3–5 — Transfer complete Gas switches typically complete within 3–5 working days. Your gas supply continues without interruption. You receive a final bill from the old supplier and begin receiving bills from the new one.
Timeline summary:
- Typical: 3–5 working days (under a week)
- Maximum: not regulated in the same way as electricity
- Interruption to supply: None
Dual Fuel Switch Timeline
If switching both electricity and gas simultaneously (to the same or different suppliers):
- Gas completes in approximately 3–5 days
- Electricity completes in approximately 14–17 days
- Both proceed independently — the gas switch completing first is normal
You will temporarily have different suppliers for electricity and gas between day 5 and day 17. This is normal and expected.
What You Need Before You Start
The switch requires only a few pieces of information:
For electricity:
- Your MPRN (Meter Point Reference Number) — 11 digits, printed on your electricity bill
- Your current supplier name
- Your name and address as on the current account
- Bank account details for direct debit
For gas:
- Your GPRN (Gas Point Reference Number) — 8 digits, printed on your gas bill
- Your current supplier name
- Bank account details
You do not need to contact your existing supplier before switching. Your new supplier handles the transfer notification. You do not need to give notice, and there is no exit fee for standard rolling tariffs.
Common Causes of Delays
Most switches complete without issues. The main causes of delay or failure are:
Incorrect MPRN/GPRN: If the number you provide doesn't match the registered address in ESB Networks' or Gas Networks Ireland's database, the transfer will be rejected. Check your bill carefully — don't copy it from memory.
Outstanding balance with old supplier: A significant unpaid balance may cause the old supplier to query the switch. This is rare for standard residential customers but can occur. Pay any outstanding amounts before initiating a switch.
Recent switch activity: If you switched in the last 28 days, there may be a brief lock-out period before a new switch can begin. This prevents rapid back-and-forth switching that creates administrative problems.
Direct debit mandate failure: If your bank account details are incorrect, your first payment with the new supplier will fail. Double-check the IBAN you enter.
Name mismatch: The name on the new account should match the name on the MPRN/GPRN registration. If there is a discrepancy (e.g., the account is in a previous tenant's name), you may need to contact ESB Networks or Gas Networks Ireland to update the registration first.
Do You Need to Read Your Meter?
With a smart meter, the transfer date is recorded automatically without a manual read. For older meters, ESB Networks or Gas Networks Ireland typically takes a read at the transfer date, or your new and old suppliers coordinate the closing read.
If you have an older meter, it is worth taking your own meter reading on or near the transfer date and keeping a record of it. If there is ever a billing dispute about the final bill, having a dated photo of the meter reading is useful.
The 14-Day Cooling-Off Period
If you change your mind after signing up, Irish consumer law gives you 14 days to cancel the switch (the same cooling-off right that applies to other distance-sold contracts). Contact your new supplier in writing — email is sufficient — within 14 days of signing up to cancel. The transfer will stop and your current supplier continues as normal.
After the Switch: What to Watch For
Final bill from old supplier: Should arrive within 6–8 weeks of transfer completion. Check that the final meter reading is plausible relative to your recent usage.
First bill from new supplier: Should reflect the tariff you signed up for. Check the unit rate and standing charge against what was advertised.
Tariff expiry reminder: Set a calendar reminder for 11 months after switching. New-customer discounts typically last 12 months. Before your discount expires, compare again — the cheapest tariff at that point may be with a different supplier.
Summary
- Electricity switch: 14–17 business days (3–3.5 weeks), no interruption
- Gas switch: 3–5 working days, no interruption
- Dual fuel: both proceed in parallel, gas completes first
- You need your MPRN (electricity) and GPRN (gas) from your bill
- No need to contact your old supplier — your new one handles it
- 14-day cooling-off period if you change your mind