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The Sustainable Energy Authority of Ireland (SEAI) is offering grants as part of the National Residential Retrofit Plan 2026, including funding for windows and doors. Homeowners are advised to prioritize attic and wall insulation to improve energy efficiency, followed by considering heat pumps and solar-PV systems.

SEAI grants can cover approximately one-quarter of the costs for energy upgrades, with attic and wall insulation potentially receiving up to two-thirds coverage. Homeowners can apply for grants through a straightforward online process, receiving approval almost immediately.

A home energy assessment, available for a €350 grant, can guide homeowners in their upgrade decisions. In the first nine months of the year, nearly 1,300 homes achieved energy upgrades to B2 or better, marking a 35% increase from the previous year, with applications also rising significantly.