Check the installer on SEAI’s official register and ask for a written quote covering panels, inverter, mounting, wiring, scaffolding, VAT, monitoring and any battery costs. Confirm who will manage the SEAI solar PV grant paperwork, whether the proposed system meets current scheme requirements, and what electrical certification, insurance and workmanship warranties are included. It is also sensible to compare references, product warranties, expected annual generation and any grid-connection or planning considerations. Apply through the correct SEAI process before work begins, and confirm the final position with SEAI or the installer, as eligibility and grant approval depend on your property and installation.