A home generator is the resilience safety net of a complete Irish energy system. When extended power cuts deplete your battery storage, when winter storms cut the grid for days, or when your heat pump needs to keep running — a generator means your home never fully goes offline. Browse both generators available in Ireland, with full system costs and transfer switch guidance.
🔇 Portable Inverter Generators
1 ultra-quiet inverter generator — the Honda EU22i. Pure sine wave output safe for laptops, medical equipment and sensitive electronics. 53 dB at quarter load. Portable, storable and easy to deploy during a power cut. From ~€2,150 installed.
🏠 Standby / Whole-Home Generators
1 dual-fuel standby generator — the Hyundai HY9000LEK-2. 9 kVA / 7.2 kW rated covers most Irish homes simultaneously. Dual-fuel petrol or LPG (indefinite shelf life). Electric start, compatible with automatic transfer switch. From ~€3,950 installed.
💰 What does a complete generator backup system cost in Ireland?
The generator unit alone is not a safe or complete backup system. You need a transfer switch (manual or automatic), a registered electrician, and ideally a concrete base and fuel storage. Below are the four most common configurations Irish homeowners choose — from basic portable backup to a full solar + battery + generator system that provides near-total energy independence.
Safety — read before installing: Never connect a generator without a proper transfer switch — this can electrocute ESB linesmen by back-feeding the grid. Always use a RECI or ECA registered electrician. Never run any generator indoors, in a garage, or near any opening — carbon monoxide is odourless and lethal. A 4-pole transfer switch must disconnect live, neutral and earth simultaneously.
Solar Panel Directory Ireland
Every generator works better paired with solar panels and battery storage. Solar charges the battery daily — reducing how often the generator needs to run. The SEAI Solar PV Home Grant of up to €1,800 makes solar significantly more affordable.
Browse 13 solar panels →Battery Storage Directory Ireland
A home battery is the silent first responder — it covers most Irish power cuts automatically, without fuel or noise. The generator is the backup to the backup: it starts only when the battery is depleted during extended outages. Together they cover every scenario.
Browse 15 batteries →Heat Pump Directory Ireland
A heat pump is the most efficient way to heat an Irish home — and it runs on electricity, so it's powered by your solar and battery system. A generator ensures your heat pump keeps running during extended grid outages, protecting your home from cold and damp even in winter storms.
Browse 17 heat pumps →🤝 Find a Generator Installer Near You
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Home backup generators in Ireland — a complete guide for 2026
Power cuts in Ireland can last from a few hours to several days, particularly during winter storms on the Atlantic coast and in rural areas. A home generator provides the ultimate resilience — unlimited backup power as long as fuel is available. But choosing the right generator, installing it safely, and integrating it with your wider home energy system requires careful thought. This guide covers everything Irish homeowners need to know.
Portable inverter generators vs standby generators — which do you need?
A portable inverter generator like the Honda EU22i is ideal if you want to keep essential circuits running — fridge, lights, boiler pump, phone charging, broadband and a TV. At 1,800W rated output it can run all of these simultaneously. Its inverter technology produces pure sine wave electricity that is safe for laptops, smart appliances and medical equipment. At 53 dB at quarter load, it's remarkably quiet for a petrol generator — and at 21 kg it can be stored and deployed when needed. Complete system cost: approximately €2,150 installed.
A standby generator like the Hyundai HY9000LEK-2 is appropriate if you need to power your entire home, including large appliances and potentially a heat pump. At 7.2 kW rated output it handles the typical full electrical load of an Irish home. It's dual-fuel (petrol or LPG), has electric start, and can be connected to an automatic transfer switch so backup power kicks in within seconds — without any manual action. Complete automatic system cost: approximately €3,950 installed.
Why LPG is better than petrol for emergency standby
For a standby generator that may sit unused for months, LPG is strongly recommended over petrol. Petrol degrades within 3–6 months, causing starting problems and carburettor damage. A generator that won't start during a power cut is worse than useless. LPG has an indefinite shelf life — connect a 47 kg cylinder once and it remains ready for years. LPG also burns cleaner, reducing long-term engine maintenance. A 47 kg cylinder provides approximately 20–25 hours of full-load runtime on the HY9000LEK-2 and costs €120–150 to refill at Flogas, SuperServ or Circle K outlets across Ireland.
Transfer switches — the component you cannot skip
A generator must never be connected to your consumer unit without a proper transfer switch. Connecting directly creates a back-feed hazard that can electrocute ESB linesmen working to restore power — and is illegal. A manual changeover switch requires you to manually disconnect grid power before connecting the generator. An automatic transfer switch (ATS) detects a power cut, disconnects from the grid, and starts the generator automatically within seconds. An ATS is the recommended choice for whole-home standby, particularly if you have medical equipment or work from home. Always use a RECI or ECA registered electrician for all generator wiring.
How a generator completes a solar + battery + heat pump system
A generator is most valuable as the final resilience layer in a complete home energy system. In normal operation, your solar panels generate electricity, your home battery stores the surplus, and your heat pump uses that electricity efficiently. A short power cut is handled silently by the battery. A long power cut depletes the battery — this is when the generator starts automatically, recharges it, and keeps your home running indefinitely. The generator uses no fuel whatsoever in normal conditions. It is the safety net you hope never to need but are glad to have.
Do generators qualify for SEAI grants in Ireland?
Standard petrol and LPG generators do not qualify for SEAI grants. However, the SEAI Solar PV Home Grant (up to €1,800) applies to solar panels, and the SEAI Heat Pump System Grant (up to €12,500 for fossil fuel switchers) applies to heat pump installation. Adding a generator does not affect those components' grant eligibility. The maximum SEAI grant available for a complete solar + heat pump system is approximately €14,300 — significantly reducing the cost of a full resilience system including a generator.