Home battery storage cost and grant in Ireland

Last reviewed: October 2026

Indicative costs

These battery costs use a DanannIQ planning assumption, reviewed in October 2026. They are not official SEAI cost data or published market medians. Obtain itemised installer quotes to confirm equipment and installation scope.

€3,000–€6,000 installed for 5 kWh, scaled linearly by capacity for planning only. Optional separate battery quote overrides the range. Unknown capacity visibly assumes 5 kWh; no published median is claimed. Confirm equipment, inverter compatibility and installation scope with quotes.

What a home battery does

A home battery stores electricity for later use. Alongside Solar PV, it can shift some daytime generation into the evening. The right capacity depends on the electricity you can store and when you will use it. A bigger battery is not automatically a better match for your home.

Discuss usable capacity, charging and discharge power, inverter compatibility, location and warranty with your installer. Ask whether backup power is included: storage alone does not establish that your home will operate during a power cut. Tariffs, export arrangements, losses and your usage pattern all affect the financial outcome; DanannIQ does not promise savings or a payback period.

How DanannIQ estimates battery costs

The current DanannIQ planning assumption is €3,000–€6,000 installed for 5 kWh, scaled linearly by capacity. A 10 kWh system therefore uses €6,000–€12,000. This is a planning assumption, not official SEAI cost data or a published market median. Actual quotes may differ because of equipment, electrical work and installation scope.

Blank capacity uses a visibly labelled 5 kWh assumption. An optional installed-cost quote overrides the assumed range. Enter the battery cost separately from Solar PV so panels and storage are not counted twice. Read the Solar PV guide when planning both measures.

The potential €600 SEAI battery grant

SEAI offers a flat €600 for qualifying battery systems of at least 5 kWh. A 4.9 kWh battery is ineligible; a qualifying 10 kWh battery still receives €600. The grant does not scale with capacity.

• The home must be built and first occupied before 2025.
• It must have an MPRN.
• There must be no previous SEAI battery funding at that MPRN.

Construction or first occupancy in 2025 or later excludes support. Unknown occupancy, MPRN or funding history leaves eligibility Unconfirmed, with no grant deduction. The assumed battery size is a planning input to verify, not evidence of the installed system.

Final installation and application checks

Use an SEAI-registered Solar PV Contractor, obtain the grant offer before work begins, and meet the scheme’s installation specifications. A post-works BER is required where the home has Solar PV. Grant eligibility does not establish technical suitability or final approval. These final conditions remain caveats in DanannIQ’s planning flow.

Confirm current requirements with the official SEAI battery grant page and compare itemised quotes that explain capacity, inverter work, commissioning and warranties.

Sources and methodology

Cost figures use the existing DanannIQ source record for Battery storage, checked on 2026-10-06. Grant information uses the existing SEAI - Battery Energy Storage System Grant record, checked on 2026-10-05. Confirm current rules and application requirements with the official SEAI source.

For more detail on DanannIQ cost ranges and potential grants, read the Methodology & data sources page or browse all upgrade guides.