Store the solar power you make during the day and use it in the evening, or charge cheaply overnight and skip the peak rate. We install home and business batteries across Ireland, on new systems or added to the panels you already have, with the €600 SEAI battery grant handled for you.
Get a battery quote Check your grant →
What a home battery does
Without a battery, most of the solar a typical Irish home makes in the middle of the day is exported to the grid for a lower rate than you pay to buy power back in the evening. A battery keeps that power for when you need it: the dinner, the shower, the kettle and the TV.
A battery can also charge from the grid on a cheap night or smart tariff and run the house through the expensive peak, which is useful in winter when panels produce less. See our guide to dynamic tariffs in Ireland and winter battery storage.
The €600 SEAI battery grant
SEAI pays €600 towards a home battery of 5kWh or more, on top of the solar PV grant of up to €1,800. The grant has to be approved before the work starts, the installer must be SEAI-registered, and a battery fitted with new solar panels also needs a post-works BER. We check what you qualify for and do the paperwork, so you see the price with the grant already taken off.
Not sure what you could get? Use our grant and savings calculator.
What size battery do you need?
Around 5kWh
Suits smaller homes and couples, covering most evening use from a 3 to 4kWp solar system. Qualifies for the €600 grant.
Around 10kWh
Suits families, larger homes, and anyone charging an EV or running a heat pump, especially on a night-rate tariff.
15kWh and up
Larger homes, farms and small businesses with high evening or overnight use. Many systems can be stacked and extended later.
We size the battery from your actual bills and how the house is used, not from a standard package. Too big a battery is wasted money, and too small a battery runs out by 8pm.
Adding a battery to existing solar panels
Most existing systems can take a battery. If you have a hybrid inverter, a compatible battery can often plug straight in. If you have a standard inverter, an AC-coupled battery with its own inverter works alongside it, without replacing anything. We look at your inverter, wiring and meter on the survey and give you the simplest option.
Batteries we install and review
We fit and review the main brands sold in Ireland, so we can tell you honestly which one suits your home. Read our installer reviews of the Sigenergy SigenStor, Tesla Powerwall, Dyness PowerBox G2, SAJ, GoodWe and myenergi libbi, or see Sigenergy vs Tesla Powerwall 3.
Batteries for businesses and farms
For businesses and farms, a battery shifts daytime solar into evening milking, cooling or opening hours, and can cut peak-time and demand charges. Commercial batteries can be included in an SEAI business grant application. Start with a free energy audit (worth €2,000).
Indoors or outdoors?
Batteries can go in a utility room, garage or attic, or outside in a rated enclosure, depending on the model. We follow the manufacturer’s rules and the wiring regulations on every install. Read indoors vs outdoors: the pros and cons.
Common questions
Can I add a battery to my existing solar panels?
Usually, yes. A hybrid inverter can often take a compatible battery directly. Otherwise an AC-coupled battery works alongside your current inverter. We check on the survey.
Do I get the €600 grant if I already have solar?
The €600 SEAI battery grant is for batteries of 5kWh or more installed by an SEAI-registered installer, and it can apply to a battery added to an existing system. We confirm your eligibility before any work starts.
Will a battery keep my power on in a power cut?
Only if the system has a backup (EPS) feature and is wired for it. Many batteries do not do this as standard. Tell us if backup matters to you and we will design for it.
How long do home batteries last?
Most lithium (LFP) home batteries come with a 10-year warranty. Check each brand’s warranty terms, which we explain on the quote.
Is a battery worth it in Ireland?
It depends on how much of your solar you would otherwise export and whether you can charge on a cheap night rate. For most homes that are empty during the day, a battery noticeably increases savings. Our calculator gives you a rough figure.
Get a free battery quote
Free survey, grant check and a clear price. We reply within one working day. Or call 083 480 0023.
Related: Home solar PV · SEAI grants · Grant calculator