A step-by-step guide to the SEAI residential Solar PV grant process from the installer's point of view — from registration and homeowner eligibility through to grant payment, with the key rules and common bottlenecks at each stage.
SEAI (Sustainable Energy Authority of Ireland) administers a residential Solar PV grant that covers a portion of the installed cost for homeowners who meet the eligibility criteria. The grant reduces the upfront cost of solar for homeowners, and understanding the process is essential for installers who want to offer a smooth, fully-funded experience.
The grant is available only through SEAI registered Solar PV installers. If you're not yet registered, you cannot facilitate grant claims for your customers. This guide assumes you are already registered and walks through the 7 stages of a typical grant-assisted installation.
Before quoting, confirm the homeowner meets all eligibility requirements:
Property requirements:
BER requirement: The property must have a valid BER (Building Energy Rating) certificate at the time of grant application. If the homeowner doesn't have one, they'll need to commission a BER assessment (€150–€300 from a SEAI registered BER assessor) before submitting the grant claim.
Key rule: Always check the build year and BER status at the initial consultation. Discovering mid-process that the property was built in 2022 or that no BER exists is a significant delay.
The homeowner submits a grant application to SEAI before installation begins. This is done online through the SEAI website. The installer can assist, but the application is in the homeowner's name.
What the homeowner provides:
SEAI issues a Letter of Offer once the application is approved. This letter specifies the grant amount the homeowner is eligible for. Installation should not commence until the Letter of Offer is received. Installing before the Letter of Offer is issued means the installation will not be eligible for the grant.
Key rule: The Letter of Offer has an expiry date — typically 12 months. If the installation does not complete and the grant claim is not submitted within this period, the Letter of Offer lapses and a new application may be required.
Once the Letter of Offer is in hand, proceed with installation as normal. The installation must comply with all applicable standards:
Ensure you have your ETCI Completion Certificate from the electrical contractor (or yourself, if you are ETCI registered) for the AC installation works.
Commission the system fully and record all test results that will populate the ITC — Voc per string, Isc per string, insulation resistance, polarity verification. See the full ITC guide →
Immediately after commissioning, submit the NC6 Microgeneration Notification to ESB Networks by post. This registers the system with the distribution network operator.
Key rule: Submission of the NC6 does not require the SEAI grant process to be complete — it is a separate obligation to ESB Networks and must be submitted regardless of whether the homeowner is applying for the SEAI grant.
The homeowner will also need the NC6 submission (or acceptance) when they apply for the Clean Export Guarantee — the payment for electricity exported to the grid.
After installation, complete the full compliance document set:
All three forms require accurate, consistent data — same MPRN, same system size, same hardware models across all documents. A discrepancy between the NC6 (ESB) and the DOW/ITC (SEAI) will trigger a query.
Circaidian generates all three forms from your Scoops report →, ensuring consistency across documents automatically.
The homeowner submits the grant claim to SEAI online. The claim package includes:
8-month window: The grant claim must be submitted within 8 months of the installation date as stated on the Declaration of Works. There are no extensions — if the claim is not submitted within 8 months, the grant is forfeited.
Key rule: The most common reason for claims to be delayed is the dual signature on the DOW. The installer signs, then sends the form to the homeowner to sign, and the homeowner takes 3 weeks to return it. Build a process to collect the homeowner signature promptly — ideally on the day of installation, or electronically. Read about e-signatures on SEAI forms →
SEAI processes claims and issues payment to the homeowner (not the installer). The homeowner then pays any remaining balance to the installer.
Processing time: SEAI typically processes claims within 6–8 weeks of submission. During busy periods (e.g., autumn when many summer installations are being claimed), this can extend.
Audits: SEAI conducts random audits of a proportion of grant claims. This may involve a desktop review of documents or an on-site inspection. Ensure your ITC test results are plausible and that the installation matches what is documented.
| Rule | Detail |
|---|---|
| Pre-2021 build | Property must have been built and occupied before 2021 |
| Letter of Offer first | Install only after the Letter of Offer is received |
| SEAI registered installer | You must be registered; check your registration hasn't lapsed |
| 8-month claim window | Submit the grant claim within 8 months of installation date |
| Dual signature on DOW | Both installer and homeowner must sign |
| Consistent data | MPRN, system size, and hardware models must match across all three forms |
| Current BER required | The property must have a valid BER certificate |
Bottleneck 1: Homeowner BER missing
Solution: Ask at the initial consultation. If no BER exists, factor in the time for a BER assessment before you can submit the grant claim.
Bottleneck 2: Homeowner doesn't sign the DOW promptly
Solution: Use electronic signatures — the homeowner can sign from their phone without printing or posting. Read more →
Bottleneck 3: Documentation errors causing SEAI queries
Solution: Use consistent, verified data across all three forms. Circaidian generates the NC6, DOW, and ITC from the same source data, eliminating cross-document inconsistencies.
Bottleneck 4: Installer registration lapsed
Solution: SEAI registered installer status requires renewal. Check your registration status at the start of each year.
Bottleneck 5: Letter of Offer expired before installation
Solution: Monitor expiry dates. If a homeowner has had a Letter of Offer for 10 months and hasn't scheduled installation, contact them — you may need to request a new Letter of Offer from SEAI.
Circaidian automatically generates your NC6 Microgeneration Notification, Declaration of Works Part 1, and Inspection, Test & Commissioning Part 2 from your Scoops report. One upload, three compliant forms, seconds not hours.
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