Cutting your electricity and gas bills in Ireland this winter

An Irish household using around 4,200 kWh of electricity a year at about 32c per kWh pays roughly €1,360 a year in unit costs alone, before the standing charge and before any gas or oil. This October most suppliers add another 5% to 9% on top. You cannot control wholesale gas, but a surprising amount of the bill still depends on when you use electricity, how your home holds heat, and whether you have compared plans since the last increase letter.

Tariffs and timing

Know your own kWh. Everything below depends on it. Your bill or online account shows annual usage; our bill guide shows where. Compare plans on your real number, not the “typical household”.

Compare after every price letter. Suppliers raise prices for existing customers while new-customer deals sit elsewhere. Run your usage through a comparison service (partner links) and include the standing charge in the annual figure.

Ask for a better plan before you leave. The CRU’s own switching guide suggests negotiating with your current supplier first. Asking costs a phone call.

Use the night rate properly, or not at all. Electric Ireland’s EV Night Boost plan, for example, lists 37.60c per kWh by day (08:00 to 23:00), 18.54c at night (23:00 to 08:00) and 10.88c between 02:00 and 04:00, all including VAT and a 5.5% discount. That spread is worth having only if the dishwasher, washing machine, immersion and any car charging really move to the night. If your use is mostly at teatime, a flat-rate plan may be cheaper.

Look at dynamic tariffs if you are flexible. Since June 2026, Irish suppliers have started offering dynamic price tariffs, where the price changes every half-hour in line with the wholesale market. The CRU explains that the next day’s 48 half-hourly prices are published in advance, that prices are typically lowest overnight and highest in the early evening, and that the plan suits smart meter customers who can shift use with timers or smart plugs. It is not for everyone: early-evening use stays expensive, although the CRU says prices on these tariffs are capped so customers are protected from very high prices.

Watch the standing charge. Several suppliers raised standing charges this autumn (SSE Airtricity electricity by 6.1%, Energia by 5%). In a small apartment the daily charge can be a large share of the bill, so compare plans on the total.

Put the immersion on a timer. An immersion heater left on is one of the most common causes of a high Irish bill. A timer set to heat water once a day, in the night hours if you have a night rate, costs a few euro.

Heat: the bigger half of the bill

Insulate with the SEAI grants. From February 2026 the government increased home energy grants under the National Retrofit Plan: up to €2,000 for attic insulation (€2,500 for first-time buyers of existing homes), €1,800 for cavity walls, up to €4,000 for windows and €1,600 for doors, with €558 million set aside for 2026. Attic and cavity wall insulation are usually the cheapest upgrades per euro saved. Apply before any work starts.

Check the heat pump sums before the boiler breaks. The same plan introduced a new €4,000 heat pump grant, with up to €12,500 available for a full heating system replacement. A heat pump running at a low flow temperature on a night or dynamic rate may cost less to run than an oil boiler, depending on the house. Try our heat pump calculator with your own figures before talking to installers.

Buy heating oil with care this year. The CSO’s August 2026 consumer price index shows home heating oil up 44.6% in a year, against 8.1% for electricity and 2.2% for gas. RTÉ reported on 26 September that 1,000 litres now cost above €1,600, compared with about €900 a year ago. Get two or three quotes, avoid emergency top-ups at the peak of winter, and watch Budget 2027, where a lower carbon tax rate on home heating oil is under consideration.

Bleed radiators and set the thermostat. Unglamorous, free, and it stops the boiler working harder than it needs to. Every degree lower on the thermostat reduces heating demand noticeably over an Irish winter.

Supports and credits

Claim what you are entitled to. The Household Benefits Package provides €35 a month towards energy costs for pensioners and people on certain social welfare payments. The fuel allowance rose by €5 to €38 a week from January 2026, and The Irish Times expects a further €5 increase to €43 in Budget 2027 for about 470,000 households. Budget 2026 contained no electricity credits, so do not plan around one.

Spread the cost if winter bills hurt. Most suppliers offer a budget payment plan (sometimes called equal or level pay) that spreads the annual cost into equal monthly amounts. It does not lower the total, but it avoids a €500 bill in February. If bills have already turned into arrears, talk to your supplier early: the CRU requires suppliers to offer a payment plan that takes account of what you can afford. MABS, the State’s free money advice service, runs a helpline on 0818 07 2000.

Count the small wins on the levy side. From 1 October 2026 the PSO levy, which funds renewable and security of supply schemes, falls by 66%. RTÉ put the change at €1.59 a month down to €0.56 including VAT. That is about €12 a year back, while network charges rise by roughly €41 over the same period according to the CRU. Neither is something you can switch away from, which is why the parts you can change matter more.

Where to start

If you do only two things this autumn: compare your plan against your real annual kWh on our compare page, and check whether the SEAI attic grant covers your house. For individual appliances, the appliance calculator shows what a tumble dryer or an electric heater actually costs to run at your unit rate.