Switching business energy supplier in Ireland is straightforward, free, and involves zero disruption to your supply. Yet only 12% of electricity customers and 14% of gas customers switched in 2023, according to CRU data. The majority stay with their current supplier — often on expensive rollover or out-of-contract rates — because the process seems complicated or risky. It isn't.
Here's exactly how it works, what you need, and what to expect.
The switching process in five steps
Step 1: Gather your information. You need your MPRN (electricity, 11 digits) or GPRN (gas, 7 digits) from your current bill, a recent meter reading, and your contract end date. Since June 2023, contract end dates must appear on every bill. Step 2: Get competitive quotes. Contact suppliers directly, use an energy broker, or do both. Because business rates are individually negotiated (not published as standard tariffs), you'll need to provide your consumption data and current rates to get meaningful quotes. A broker can approach all suppliers simultaneously and return like-for-like comparisons. Step 3: Choose your new supplier and accept. Once you've selected a deal, you sign the new contract. The new supplier handles everything from here — they initiate the switch through ESB Networks' Meter Registration System Operator (MRSO) for electricity, or through Gas Networks Ireland's Gas Point Registration Operator for gas. Step 4: The cooling-off period. A mandatory 14-day cooling-off period applies after you sign. For distance or off-premises contracts (signed online or over the phone), this extends to 30 days under the Consumer Rights Act 2022. During this period, you can cancel without penalty. Step 5: The switch completes. The entire process takes approximately two weeks from initiation to completion. Your old supplier sends a final bill; your new supplier starts billing from the switch date. That's it.There is no disruption to your supply
This is the concern that stops most businesses from switching, so let's be clear: switching is purely an administrative billing change. The physical electricity and gas infrastructure remains identical regardless of which supplier you're paying. ESB Networks continues managing the distribution network. Gas Networks Ireland continues managing the gas network. The electrons and molecules flowing into your premises don't know or care who's billing you.
Your lights will not flicker. Your gas will not cut out. There is no gap in supply during the transition. The only thing that changes is the name on your invoice and — if you've switched well — the amount you're paying.
What documents you'll need
For a standard business energy switch, have the following ready:
- MPRN (electricity) or GPRN (gas) — found on your current bill
- Up-to-date meter reading — submit one on or near the switch date for accurate billing
- IBAN for direct debit setup
- Business name and address as registered with your current supplier
- CRO number if applicable
What about exit fees?
If you're still within a fixed-term contract, leaving early typically incurs an exit fee of €50 to €100. However, if your contract has already expired — meaning you're on rollover or out-of-contract rates — you can switch freely with no exit fee. Given that rollover rates are typically 30–50% more expensive than negotiated rates, even paying an exit fee to leave a current contract can make financial sense if the savings on the new deal outweigh the penalty.
Check your contract terms carefully. The termination window (usually 30–120 days before the end date) is the period during which you must give notice to leave without a fee. Miss it and you're rolled over; leave mid-contract and you pay the exit charge.
Timeline: what happens and when
- Day 1: You sign with the new supplier
- Days 1–14: Cooling-off period (30 days for distance contracts)
- Days 3–5: New supplier submits the switch request to MRSO/GPRO
- Days 7–14: The switch processes through the registration system
- Day ~14: Switch completes. New supplier billing begins
- Days 14–30: Final bill arrives from your old supplier
Common concerns answered
"Will my new supplier be reliable?" All licensed suppliers in Ireland are regulated by the CRU and must meet the same standards. The physical infrastructure — owned by ESB Networks and Gas Networks Ireland — is the same regardless of supplier. "What if something goes wrong during the switch?" In the unlikely event of a processing issue, your existing supply continues uninterrupted. You won't be left without power or gas. "Can I switch back if I don't like the new supplier?" Yes. You can switch again at any time, though you may face exit fees if you leave a new fixed-term contract early. "What if I'm a tenant?" You can switch supplier as a tenant. The MPRN/GPRN is tied to the premises, not the person. However, check your lease — some commercial leases specify energy supply arrangements.Start your switch
The hardest part of switching business energy is making the decision. The actual process takes less time than most businesses spend deliberating about it. Send us your bill, and we'll handle the comparison, the paperwork, and the switch itself — so the only thing you need to decide is when to start saving.