Rough estimate based on the BER cert's primary energy band β covers the four 'regulated services' SEAI DEAP measures: space heating, hot water, lighting, ventilation. It does NOT include appliances, cooking, IT equipment, or real-life usage variance (occupancy, comfort temperature, hours at home). Actual bills will differ.
2026-05 Irish retail unit prices (Switcher.ie / SEAI Domestic Fuels Q4 2025): Mains Gas β¬0.10/kWh Β· Heating Oil β¬0.10/kWh Β· Electricity β¬0.30ββ¬0.40/kWh (smart vs standard) Β· LPG β¬0.15/kWh Β· Solid fuel β¬0.06ββ¬0.09/kWh. Β±15% margin on non-electric. Standing charges: β¬300/yr electricity meter, +β¬360/yr if gas is connected.
Calculation: 340 kWh/mΒ²/yr Γ 138 mΒ² = 46,879 kWh/yr (primary energy from the BER band). Primary β delivered uses SEAI DEAP factors (fossil ~1.10, electric ~2.08). Delivered kWh then splits 85% main fuel (Heating Oil) + 15% electricity (lighting + ventilation always run on grid), with standing charges added. The fuel choice is the mode from this Small Area's BER records β single-property accuracy isn't guaranteed.