SEAI Grants in 2026: A Plain-English Guide to What You Can Actually Claim

SEAI Grants in 2026: A Plain-English Guide to What You Can Actually Claim

The SEAI grant scheme is generous, well-funded, and genuinely changing what Irish homes look like. It's also bewildering. There are around a dozen different grants, three different ways to apply for them, and rules that sound straightforward until you read the small print.

Here's the plain version.

The grants you can claim, and what they're worth in 2026

Solar PV: up to €1,800. For solar electricity panels, on homes built before 2021. Paid after install.

Heat pump (air-to-water): €6,500. For replacing oil, gas, electric or LPG heating with a modern heat pump. Requires a Technical Assessment first (around €200, partially refundable). Home must be built before 2021.

Heat pump (exhaust air): €3,500. A smaller grant for the simpler exhaust-air system, suited to newer, well-insulated homes.

Attic insulation: up to €1,500. Depends on house type — semi, terraced, detached, apartment.

Cavity wall insulation: up to €1,700.

External wall insulation: up to €8,000. The big one. Wraps the outside of your home in insulation. Mostly worth it for older, solid-wall houses with a poor BER.

Internal wall insulation: up to €4,500. Done from the inside — disruptive but necessary if external isn't possible (terraced houses, listed buildings, planning constraints).

Heating controls: €700. Smart thermostats, zoning, etc. Often required as part of a heat pump install anyway.

BER assessment: €50. Cheap, mandatory for many of the other grants, and useful in its own right.

EV home charger: €300 (was higher pre-2024 — check seai.ie for current).

Solar thermal (hot water): €1,200. Niche these days — most homeowners now go solar PV instead, but still grant-eligible.

The two ways to apply

1. The DIY route — Better Energy Homes scheme. You pick the work, find your own SEAI-registered contractor, apply to SEAI, get the work done, get inspected, and the grant is paid directly to you afterwards. Cash flow note: you pay the contractor in full first, then claim back. Grants typically arrive 4–8 weeks after inspection.

2. The One-Stop-Shop route. A registered "One-Stop-Shop" company manages the whole project — surveyor, builder, BER, paperwork — and the grant is netted off your invoice so you only pay the difference. Less hassle. Slightly higher overall cost (the One-Stop-Shop takes a project management fee). Best for whole-home retrofits, not single measures.

The catches nobody tells you

You usually need a BER first and after. Most grants require a pre-works BER (so SEAI knows where you started) and a post-works BER (to prove the upgrade actually did something). That's two visits and two fees, though both are partially grant-aided.

Heat pump grants come with conditions. Your house has to be insulated to a reasonable standard first. SEAI requires a "Heat Loss Indicator" of 2.0 W/K/m² or better — meaning the house won't haemorrhage heat the moment the pump produces it. Many homes need insulation work before a heat pump grant will be approved. This is the single biggest reason heat pump applications get delayed.

You can't claim the same grant twice. One solar grant per home, ever. Same for cavity, attic, and the rest.

Pre-2021 only for most grants. If your house was built after 2021 it's already supposed to meet a high standard — most grants don't apply.

Grants don't cover repairs. Replacing a knackered boiler with a like-for-like model? No grant. Replacing it with a heat pump? Grant.

What's actually worth claiming?

If you're starting out and don't know where to begin, the highest-value sequence for most older Irish homes is:

  1. BER assessment first — €50 well spent. Shows you what you're working with.
  2. Attic and cavity insulation — fastest payback, cheapest, biggest immediate impact on draughts and bills.
  3. Solar PV — cheap to install, immediate bill savings.
  4. Heat pump — only after the insulation is sorted, otherwise it'll cost you a fortune to run.
  5. External wall insulation — biggest grant, biggest disruption, only worth it for older solid-wall houses.

The order matters. Doing a heat pump on an uninsulated 1970s bungalow is the most expensive mistake in Irish retrofit. The pump can't keep up, the bills go through the roof, and the SEAI grant won't save you from the disappointment.

The shortest possible advice

Start with a BER assessment (€150 normally, partially grant-aided). It tells you exactly what your house needs and in what order. Then plan the works around the grant calendar — SEAI's budget is annual, applications for popular grants do queue up in autumn, and approvals take 4–8 weeks at peak times.

CleanEnergy.ie connects you with SEAI-registered installers in your county for every category above. They handle the paperwork side of grant applications. Free for homeowners, always — ask for a BER first if you're not sure where to start.