First, check the current SEAI solar PV grant guidance and confirm that your home and installer appear to meet the scheme requirements. Apply to SEAI and receive a grant offer before starting work, then choose an SEAI-registered solar PV contractor to design and install the system. After installation, the contractor should provide the required completion documents and arrange any relevant ESB Networks connection steps, while you may need a post-installation BER assessment. Export payments are separate from the installation grant, so ask your electricity supplier about the Clean Export Guarantee; final approval and payment depend on SEAI and the relevant providers.