An SEAI grant calculator can give an initial estimate of the support that may be available for measures such as insulation, heating upgrades or solar PV. You usually enter details about your home, the proposed work and, where relevant, your household circumstances. Treat the result as an indication only: the actual grant, eligibility and approved amount depend on current SEAI rules, the property and the registered contractor or provider involved. Check the latest calculator and application guidance on the official SEAI website before arranging work, and ask an approved contractor to confirm what may apply to your home.