If you own a home in Ireland, an SEAI grant is very likely the single biggest lever you have to cut the cost of a warmer, more efficient home. But the schemes, amounts and rules change often, and the official guidance can be dense.
This guide breaks it all down in plain English: what SEAI grants are, what they cover in 2026, how much you can realistically get, who qualifies, and the exact steps to apply.
What is an SEAI grant?
The Sustainable Energy Authority of Ireland (SEAI) is the state body responsible for promoting and funding energy efficiency. It offers grants that pay for a large share of the cost of specific home energy upgrades (insulation, heat pumps, solar PV and full retrofits) for eligible homes.
What do SEAI grants cover in 2026?
There are two main routes, and which one suits you depends on how much work you want to do at once.
1. Individual energy upgrade grants
Best when you want to do one or two measures at your own pace: attic insulation, cavity wall insulation, internal or external wall insulation, heat pumps, solar PV and heating controls. The grant is paid to you once the job and a post-works BER are complete.
2. National Home Energy Upgrade (One Stop Shop)
Best when you want a deeper, whole-home retrofit in one coordinated project. A registered One Stop Shop manages everything and the grant is netted off your invoice, so you only pay the balance.
| Individual grantsOne measure at a time | One Stop ShopBest for deep retrofit | |
|---|---|---|
| Best for | One or two upgrades | Whole-home, done at once |
| You pay | Full cost, grant refunded after | Balance only (grant netted off) |
| Coordination | You manage measures | One project manager |
| Typical support | Fixed per measure | Up to ~50% of total cost |
How much money can you actually get?
The honest answer: it depends on your home and the measures. Try the estimator below for an indicative figure, then we confirm the exact numbers at a free assessment.
Book a free assessment for your exact figure.
Why the fabric comes first: most homes lose the majority of their heat through un-insulated surfaces, so that’s where grants deliver the biggest return.
Who qualifies for an SEAI grant?
Most owner-occupied and rented homes qualify, provided the home was built and occupied before a qualifying date (typically before 2011 for insulation grants), the works are carried out by an SEAI-registered contractor, and a BER assessment is completed after the works.
How to apply for an SEAI grant, step by step
Common mistakes that cost homeowners money
- Starting works before approval. Grants generally must be approved before work begins.
- Using a non-registered contractor. Only works by SEAI-registered contractors qualify.
- Doing measures in the wrong order. Insulate before you heat: a heat pump in a leaky home underperforms.
- Forgetting the BER. No post-works BER, no grant payment.
The bottom line
SEAI grants can cover a very large share of the cost of a warmer, cheaper home. But the value, eligibility and process reward doing it properly and in the right order.
If you’re in Cork or anywhere across Munster, book a free home energy assessment and we’ll tell you exactly what your home qualifies for.
