Electricity Consumption Guide for Irish Homes (2026)

The average Irish home uses about 4,200 kWh of electricity per year, according to the CRU. At a standard 2026 unit rate of 35c/kWh including standing charges and VAT, that works out to roughly €1,800–€2,100 a year — one of the highest residential electricity bills in Europe.

Average electricity use by home size

• 1-bed apartment: 1,800–2,400 kWh/year (~€750–€1,000)
• 3-bed semi-detached: 3,800–4,800 kWh/year (~€1,600–€2,000)
• 4-bed detached: 5,500–7,500 kWh/year (~€2,300–€3,100)
• Home with heat pump: add 3,000–5,000 kWh/year
• Home with EV: add 2,500–4,000 kWh/year

What uses the most electricity?

In a typical Irish home without electric heating, the biggest loads are the immersion / hot water tank (15–20%), kitchen appliances including fridge, freezer, oven, kettle and dishwasher (25–30%), lighting (8–12%), washing machine and dryer (10–15%), and standby loads from TVs, broadband and chargers (5–10%). When you add a heat pump or EV, those quickly become the single largest load on the bill.

How solar PV changes the maths

A 4 kW solar PV system in Ireland generates around 3,600 kWh per year. Without a battery you'll self-consume about 35–45% of that (~1,500 kWh, saving €500+) and export the rest at 18–24c/kWh under the Clean Export Guarantee. Add a 5 kWh battery and self-consumption rises to 70–80%, cutting a typical bill in half.

How heat pumps change the maths

Heat pumps move 3–4 units of heat for every 1 unit of electricity (COP 3–4). Replacing an oil boiler typically adds 3,000–5,000 kWh/year to your electricity bill but eliminates €1,500–€2,500 of oil — net saving of about €600–€1,200 a year, plus a much lower carbon footprint.

Five quick wins to cut consumption

• Switch to a smart night-rate tariff if you have an EV, battery or heat pump
• Set the immersion timer and avoid leaving it on a boost
• Replace any remaining halogen or incandescent bulbs with LED
• Use the eco programme on dishwasher and washing machine
• Add a clamp-style energy monitor so you can see what's actually drawing power

Bottom line

Irish electricity prices are not coming down meaningfully in 2026. The fastest payback today is the combination of solar PV, a small battery and a smart tariff — typically cutting a 4,500 kWh bill from €1,900/year to under €700/year, with a 5–7 year payback.