The SEAI solar grant application is straightforward, but it has one rule that catches people out: you must have your grant approval in place before any work starts. Begin the installation first and you are disqualified, with no way to appeal. This guide walks through the whole process in order, from getting quotes to receiving payment.
The grant is worth up to €1,800 for a domestic solar PV system, and in 2026 it is paying the same as it did in 2025 - the planned reduction was cancelled.
What the SEAI Solar Grant Is Worth in 2026
The grant is based on the size of your system in kilowatt-peak (kWp) and is paid pro rata, so partial values are covered proportionally - a 2.5 kWp system attracts €1,500.
| System Size | Rate | Grant Value |
|---|---|---|
| First 2 kWp | €700 per kWp | €1,400 |
| 2 kWp to 4 kWp | €200 per kWp | +€400 |
| Maximum (4 kWp and above) | - | €1,800 |
Systems larger than 4 kWp still receive €1,800 - the grant is capped, not scaled indefinitely. Battery storage does not attract any additional SEAI grant funding. For the full picture on rates, eligibility and returns, see our complete guide to SEAI solar grants.
Check You Are Eligible Before You Start
Four conditions decide eligibility. Confirm all of them before spending time on quotes:
- The home was built and occupied before 2021. This is the condition that disqualifies most applicants. Newer homes are already built to a standard that assumes renewable generation.
- The property has an MPRN. Your Meter Point Reference Number appears on your electricity bill. You will need it on the application form.
- No previous solar PV grant at this MPRN. The grant is once per meter point, not once per owner.
- You use an SEAI-registered company. Work carried out by an unregistered installer does not qualify for grant support, regardless of how good the installation is.
A common misconception is that the grant is limited to owner-occupiers. It is not. SEAI accepts applications from all homeowners including private landlords, as well as owner management companies and Approved Housing Bodies.
Two Ways to Apply - and They Pay Out Differently
This is the part most guides get wrong. How you apply changes when and to whom the money is paid.
| Route | How the grant is paid | Best for |
|---|---|---|
| Apply yourself | You pay the installer in full. SEAI pays the grant to you after the works are completed and verified. | Solar PV on its own |
| One Stop Shop | The grant is deducted upfront from the cost of works. | Multiple upgrades at once |
Budget for this. On the self-apply route you need the full installation cost available upfront and are reimbursed later. A One Stop Shop can only be used for solar PV if you are carrying out several home energy upgrades together.
The SEAI Grant Application: Step by Step
- Find a registered company and get quotes. SEAI recommends obtaining at least four quotes from different registered companies. Ask each for a specific system design and payback figure for your house rather than a generic price.
- Apply to SEAI for a grant offer. Submit the application online. You will need your MPRN, your BER details and the property address.
- Wait for approval before works start. Do not let anyone put a panel on your roof until the grant offer is issued. This single step invalidates more applications than anything else.
- Complete your installation. Once approved, you have eight months to finish the works and submit all required documentation.
- Arrange a post-works BER assessment. A BER is mandatory after the installation. The grant will not be paid without it, and it is your responsibility to arrange, so book it early rather than at the deadline.
- Submit evidence of works to SEAI. This includes your invoice, the BER certificate and the declaration of works.
- SEAI pays the grant. A proportion of installations are inspected as part of SEAI’s quality assurance process, so keep your documentation.
How Long Does the Whole Process Take?
The grant offer typically issues within a few weeks of applying. The installation itself is usually one to two days for a standard domestic system. The longest variables are how quickly you gather quotes at the start, and how quickly you arrange the post-works BER at the end. Your eight-month completion window is generous, but it is a hard deadline.
Why Applications Get Rejected
- Works started before approval. There is no retrospective approval and no appeal.
- The home was built or occupied in 2021 or later. Check this first - it is a hard cutoff.
- The installer was not on the SEAI register. Verify this yourself on SEAI’s site rather than taking a sales claim at face value.
- The eight-month window lapsed. Usually because the post-works BER was left too late.
- A previous grant exists at the same MPRN. Worth checking if you bought the property recently.
After the Grant: Getting Paid for Surplus Power
The grant is not the only money involved. Under the Clean Export Guarantee, your electricity supplier pays you for surplus generation exported to the grid, typically around 19-21 cent per kWh depending on supplier. It is a separate arrangement you set up with your supplier, not part of the SEAI application.
You will always get more value from consuming your own generation than from exporting it, which is why system sizing should follow your actual consumption pattern rather than simply filling the available roof.
Key Points
- Approval must be in place before any works begin - this is the rule that disqualifies most applicants.
- The maximum grant is €1,800 for a 4 kWp system, unchanged in 2026, paid pro rata below that.
- Your home must have been built and occupied before 2021 and have an MPRN.
- Private landlords are eligible - the grant is not restricted to owner-occupiers.
- On the self-apply route, SEAI pays the grant to you after completion, not to your installer upfront.
- A post-works BER is mandatory, and you have eight months from approval to complete everything.
If you would like the application handled correctly from the start, Mitros is an SEAI-registered solar company and can guide the process end to end - from system design and installation through to the documentation SEAI needs. Talk to our team about your home, or estimate your savings and payback first.
