Most Irish solar homes export up to half their generated electricity back to the grid for a few cent per unit – then buy it back that evening at full price. A battery stops that. EnergyServ has fitted battery storage across 8,000+ installations nationwide, backed by our 2026 industry accreditation.
Solar panels generate most of their electricity in the middle of the day – when most homes are empty and using the least power. Without a battery, that surplus is exported to the grid under the Clean Export Guarantee, earning a payment per kWh that’s typically well below your import rate. A battery stores that surplus instead, so you draw down your own stored power in the evening rather than buying it back from your supplier.
Combined with a dynamic electricity tariff, a battery can also be charged from the grid during cheap overnight rate windows and discharged during expensive peak periods – a second, separate saving on top of solar self-consumption.
Being straight about this up front builds more trust than burying it: battery storage is not covered by the SEAI Solar PV Grant. The grant (up to €1,800 in 2026, confirmed unchanged from 2025) applies to panels and inverter only. Full detail on how that grant is calculated is on our SEAI Solar Grants Ireland page.
What does apply to batteries: 0% VAT, provided the battery is installed under the same contract as your solar panels – a saving of roughly €800–€1,500 versus buying a battery separately at the standard 23% rate. EnergyServ structures every combined install this way by default.
| Household pattern | Typical battery size | What it’s good for |
|---|---|---|
| Home most of the day, moderate usage | 5 kWh | Covers evening peak, some overnight top-up |
| Away during the day, home evenings/weekends | 8–10 kWh | Captures most of the day’s export, covers a full evening |
| EV owner, home office, or larger household | 10 kWh+ | Overnight EV charging from stored solar, full self-sufficiency on sunny days |
A battery doesn’t remove your export earnings – it changes when you export. Charge the battery first from your own panels, and only genuinely surplus power (above what the battery can hold) goes to the grid under the Clean Export Guarantee. Full explanation of how CEG payments work, current rates, and how to register: Clean Export Guarantee explained
(Insert actual battery product warranty term here – competitors state 25-year panel warranties; battery warranties are typically shorter, commonly 10 years, and this should be stated explicitly rather than left implied.)
EnergyServ installs battery storage across Ireland, not just the South East – see our Residential and Commercial solar pages for full coverage detail.
Not sure if a battery is worth it for your home? Get a free assessment based on your actual usage pattern, not a generic estimate.
