How to compare electricity prices in Ireland

Your starting point

The headline discount is only the beginning. Put every offer on the same annual-cost basis. Use the same assumptions for every offer and verify the latest terms directly.

Start with a year of your own usage

Take the kWh consumed over your last twelve months, rather than adding up payments. A monthly direct debit can include account credits or estimated usage. If you have only a shorter period, record the dates and recognise that a winter-heavy sample may exaggerate annual consumption. Keep the same consumption figure across all the quotes you compare.

Compare the final rate, not the discount

A large percentage discount can still produce a higher bill if it starts from a higher standard rate. Ask for the final rate you would actually pay, the date it applies from and the length of the discount. If the rate already includes the discount, do not reduce it again. Compare VAT-inclusive household rates consistently.

Add the fixed charges

For a single-rate offer, multiply annual kWh by the unit price in euro, then add the annual standing charge and any other applicable charges. Subtract only credits you qualify for. For example, 3,000 kWh at an illustrative 30 cent rate is €900 in usage. An illustrative €250 standing charge makes €1,150 before other charges or credits. These figures demonstrate the calculation; they are not a supplier offer.

Calculate time-of-use offers separately

A smart plan needs usage in each time band. Multiply each band’s kWh by its own rate and add the results. A very low overnight rate matters little if you cannot move consumption into that window. A household with electric heating can have a different result from a household charging an EV overnight.

Read the terms before switching

Keep a copy of the tariff sheet and check eligibility, payment method, contract length and early-exit conditions. The CRU explains the information needed to switch, including your MPRN for electricity. Check any cooling-off rights with the new supplier for the way you buy.

Make the comparison reproducible

Save the rates, your usage assumptions and the date checked. Run the same calculation for your existing tariff so any estimated saving uses a consistent baseline. A projection assumes the rates and usage hold; it is not a guarantee of next year’s bill.