The SEAI solar grant in 2026, explained

If you are looking at solar for your home, the SEAI grant is the first number you want straight in your head. So here it is, plainly. The most you can get for a house is €1,800, and below is exactly how it stacks up, who qualifies, how you claim it, and what it really leaves you paying.

How the grant adds up

It is worked out on the size of your system, measured in kWp. You get €700 for each of the first 2 kWp, then €200 for each kWp after that up to 4 kWp. At 4 kWp you hit the ceiling of €1,800, and anything bigger does not add a cent more in grant.

System size	Grant rate	Grant so far
The first 2 kWp	€700 per kWp	Up to €1,400
The next 2 kWp (up to 4 kWp)	€200 per kWp	Up to €1,800
Anything above 4 kWp	No extra grant	Stays at €1,800

There is a bit of good news worth knowing. The cap was due to drop by €300 to €1,500, but the government reversed that at the end of 2025, and it is confirmed to stay frozen at €1,800 for 2026. You will see the odd website quoting bigger figures like €2,700. Ignore those, they are wrong for a home. The real ceiling for a house is €1,800.

These are the figures as they stand for 2026. Grants do change, so it is always worth a quick look at the official SEAI solar grant page before you sign anything.

Who can get it

• Your home was built and lived in before the end of 2020. SEAI checks this by the date your electricity meter was connected. Anything built from 2021 on does not qualify, because newer homes are already expected to be near zero energy.
• You own the property. Owner occupiers and private landlords can apply. Tenants cannot.
• One grant per home. The grant is tied to your MPRN, the reference number for your electricity connection, and you can only claim the solar grant once against it.
• No BER needed before the work. You do need a BER assessment done after the install though, by an SEAI registered assessor, before the grant is paid.
• Homes only. Businesses, farms and schools go through the separate Non-Domestic Microgen grant instead, which is a different scheme entirely.

How you actually claim it, step by step

1. Pick an SEAI registered installer and agree the job with them.
2. Apply online through the SEAI portal using your MPRN. Do this before any work starts.
3. Wait for your Letter of Offer to land by email. This is the bit that matters most: do not let a single panel go up until you have it.
4. Your installer applies to ESB Networks for your grid connection, which takes around four weeks.
5. The system is installed and a Safe Electric electrician signs off the electrical work.
6. You arrange and pay for the post-works BER assessment.
7. Your installer uploads the paperwork and your safety file to SEAI.
8. SEAI checks it, may call out to inspect the job, and then pays the grant into your account.

The one line to underline in all of that: do not start the work until the Letter of Offer is in your inbox. Jumping the gun is the single most common way people lose the grant entirely.

How long it takes

Once your Letter of Offer arrives, you have eight months to get the job done and the paperwork in. After the installer submits everything and your post-works BER is published, the money usually lands in your bank account within four to six weeks.

What it does not cover, and how people lose it

The grant is for the panels and the inverter. It does not stretch to batteries, immersion diverters or other add-ons, although a battery does get the 0% VAT if it goes in under the same contract. The handful of ways people trip themselves up are worth knowing before you start:

• Starting any of the work before the Letter of Offer arrives. This voids it completely.
• Missing the eight month deadline to finish and submit.
• Using an installer who is not on the SEAI registered list.
• Switching installer partway without cancelling and reapplying first.

What a 4 kWp system really costs you

Numbers are easier with a real example. Take a common setup, a 4 kWp system, which is roughly ten panels. With the 0% VAT already in the price, most of these land somewhere between €5,000 and €8,000. Knock off the full €1,800 grant and you are looking at a net cost of around €3,200 to €6,200, before you count a euro of the savings on your bills or the money you earn back exporting to the grid. (How that export money works is its own story, told plainly in our guide to the CEG and the export rules.)

The bit a good installer gets right

When you are comparing quotes, the number that sticks is the net figure, what you actually pay after the grant. A clear quote lays out three lines: the gross price, the grant, and the net to you. It also flags the post-works BER up front instead of springing it on you later. That is exactly the detail Caolú calculates live from the system size on every quote, so the installer is not doing sums in their head at your kitchen table and you are not left guessing what you really owe.