01Home energy
Everyday costs
Appliance costs
See how much your immersion, dryer, gaming PC or EV charge really costs at your own Irish unit rate, with 45 appliances ranked by what each one adds to the year.
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Verdanyx category · Ireland
Home energy tools
Six calculators for Irish home energy, drawing on the CRU's own load profile, published Irish gas and kerosene rates and CSO building-stock data rather than round numbers.
6 tools in this areaNot sure where to start
Upgrading an Irish home: which question to answer first
These four tools answer parts of one decision, and the order is not a preference. SEAI describes a fabric-first approach, and for most of the housing stock the heat-pump route runs through a technical assessment that says what fabric work the house needs before the grant application. That makes the insulation question a precondition rather than a parallel option. No answers are passed between pages or stored.
Take the decisions in order02Home energy
Home efficiency
BER estimate
Estimate an Irish home's band on the A-G BER scale in force since May 2026, anchored on CSO averages for real homes of the same age and type, with the neighbouring bands shown.
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03Home energy
Heating
Heat pump costs
Compare a heat pump with oil, mains gas or direct electric heating on your own demand, tariff, boiler efficiency and SCOP, opening on published Irish fuel prices you can overwrite.
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04Home energy
Solar & tariffs
Home battery
Size a home battery and test its payback against the three limits that actually bind: what it holds, what the household can use out of it, and how much surplus your roof really makes.
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05Home energy
Solar hot water
Solar diverter
Test whether diverting surplus solar into an immersion actually beats the export payment you give up under the Clean Export Guarantee, at your own export rate and cost of heat.
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06Home energy
Time-of-use electricity
Smart tariff
Compare a day, night and peak smart plan with your standard 24-hour rate on the ESB Networks time bands and the CRU load profile every Irish supplier's own bill estimate starts from.
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Before you decide
Compare home-energy options on the same basis
Home-energy decisions usually mix two different questions: what a system can deliver at one moment and what it may save across a month or year. A heater, heat pump, battery and solar diverter cannot be compared from headline capacity alone. Your tariff, usage pattern, home fabric and existing equipment all change the answer.
Use these calculators as a first pass before requesting quotes. Every rate that decides an answer in this area is yours to enter rather than a national average chosen here, and each result names the figures it used, so replacing a default with your own bill genuinely moves the answer. Where a figure is maintained for you instead, it is published beside the document it came from and marked as sourced or as a Verdanyx assumption.
Start with the bill and the building
Recent bills, day and night rates, BER information and known heat loss are more useful than a generic national average. A cheaper technology can still disappoint if the house or tariff does not suit it.
Keep power and energy separate
Kilowatts describe how quickly equipment can deliver or consume power; kilowatt-hours describe energy over time. Sizing and running-cost questions often need both.
Treat payback as a range
Weather, occupancy, future tariffs and how much generated energy you use yourself can move a payback estimate. Test a cautious case as well as the central estimate.