Ireland's SEAI grants cover a large share of the cost of insulating, heating and powering your home more efficiently. Here's every grant, what it's worth, and who qualifies, with figures checked against SEAI's published rates.
New standalone grant since March 2026. Only if your attic and walls are already rated good.
The quickest win. Fast to install and one of the cheapest grants to claim.
The biggest insulation grant, and the biggest comfort change for most older homes.
Cheapest wall option where the cavity is suitable. Suitability is the whole question.
Dry lining from the inside, for homes where external work is not an option.
The largest grant on the list, raised from €6,500 in February 2026.
Generate your own electricity and cut your bills, with a grant of €700 per kWp.
Solar thermal panels that heat your hot water directly from the sun.
Zoning and smart controls so you only heat the rooms you're using.
Free upgrades if you receive certain welfare payments. Long waits, and not everyone qualifies.
One provider manages a whole deep retrofit. Bigger grants, and much bigger bills.
State backed low interest finance for the part the grant does not cover.
Three things moved this year and they change the answer for most homes. The heat pump grant went from €6,500 to €12,500 on 3 February. A standalone windows and doors grant arrived in March, worth up to €5,600, though only if your attic and walls are already rated good. And on 24 May the BER scale was simplified to A0, A, B, C, D, E, F and G, so the old subdivisions like B2 and C1 no longer appear on new certs.
A second wall insulation measure is also allowed now, in sequence. Cavity first, then internal or external. Internal first, then external. If you have already done external, that is the end of the road for wall grants.
The grant is not the price. Across 61 documented Irish projects, homeowners paid most of the bill themselves, and on whole house retrofits the grant covered roughly a fifth to a third. See what people actually paid, with the real quotes beside the grant figures.
| Upgrade | Apartment | Mid-terrace | Semi-D / end | Detached |
|---|---|---|---|---|
| Windows | €1,500 | €1,800 | €3,000 | €4,000 |
| External doors (each, max 2) | €800 | €800 | €800 | €800 |
| Attic insulation | €1,100 | €1,400 | €1,500 | €2,000 |
| Cavity wall insulation | €700 | €850 | €1,300 | €1,800 |
| Internal wall (dry lining) | €1,500 | €2,000 | €3,500 | €4,500 |
| External wall insulation | €3,000 | €3,500 | €6,000 | €8,000 |
| Heat pump (to water) | €9,500 | €12,500 | €12,500 | €12,500 |
| Heat pump (air-to-air) | €7,500 | €7,500 | €7,500 | €7,500 |
| Solar PV panels | up to €1,800 | up to €1,800 | up to €1,800 | up to €1,800 |
| Solar water heating | €1,200 | €1,200 | €1,200 | €1,200 |
| Heating controls | €700 | €700 | €700 | €700 |
| Heat-loss assessment | €200 | €200 | €200 | €200 |
Amounts vary by dwelling type. First-time buyers and welfare recipients qualify for higher rates on attic and cavity wall insulation. Confirm current amounts with SEAI before you commit.
Use the calculator to add up your grants, then browse vetted installers in your county.