Typical installed solar battery cost Ireland ranges from €4,000 to €7,000, depending on size and brand. SEAI battery storage grant ireland 2025 up to €1,800 (There's no standalone SEAI grant for home batteries — the Solar PV grant (max €1,800) applies to panels — but batteries qualify for 0% VAT when they're supplied and installed with the solar PV system as part of the same contract. ) Important: PV. If you can store the electricity generated during the day, there is less need to consume it (e., through milk cooling, running your domestic washing machine) when the sun is shining, and you'll use more of the power you generate and save money. As renewable energy becomes more popular, more households are realising that a solar battery is not just an add-on. Choosing the right battery.