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The Sustainable Energy Authority of Ireland (SEAI), under the National Residential Retrofit Plan 2026, has significantly enhanced financial supports available to homeowners looking to improve energy efficiency, lower heating costs, and decarbonise homes.
These changes, effective from early 2026, represent one of the most substantial upgrades to Irish residential retrofit funding in recent years.
Four key changes
Increased grant levels & new measures
SEAI has raised the value of key grants across a range of energy-saving measures: attic and cavity wall insulation grants have been increased to better reflect current installation costs, and eligibility has been widened to allow homeowners to claim a second wall insulation grant where previous insulation work has already been completed. From March 2026, a brand-new Windows and Doors grant will also become available to help improve fabric performance and reduce heat loss.
Major upscale in heat pump support
One of the headline changes is the enhancement of the heat pump grant under the Better Energy Homes programme. The maximum grant for a heat pump system has been increased to up to €12,500, combining a base heat pump grant, support for any necessary central heating upgrades, and a Renewable Heat Bonus for households replacing fossil fuel systems. This aims to accelerate the transition to low-carbon heating solutions across more home types (houses, apartments and air-to-air systems).
Continued support for renewable electricity (Solar PV)
Solar electricity (PV) grants remain available, helping homeowners offset energy costs by generating their own clean electricity. The scheme supports systems up to 4 kWp, with graduated grant values capped at €1,800. While not increased in this latest round, PV grant support remains an accessible option for households seeking a renewable energy upgrade.
Expanded access and equity measures
To ensure broader participation, SEAI has also introduced enhanced grant rates for energy-poor households and additional supports for Approved Housing Bodies and local authorities. First-time buyers upgrading older properties will see particular benefits through higher fixed grants for attic insulation and other measures.
What this means for homeowners
Taken together, the 2026 updates make energy upgrades more affordable, flexible and appealing — whether homeowners are tackling individual measures or planning deeper whole-home retrofits. With grants now covering a higher percentage of project costs and a wider range of eligible works, it is a strong financial moment to invest in comfort, lower energy bills, and climate action at home.
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