The Sustainable Energy Authority of Ireland (SEAI) provides generous grant funding to make home energy upgrades more affordable. In 2025, there are two main schemes to choose from.

SEAI One Stop Shop (OSS) Grants

If you are planning a deep retrofit that involves multiple measures – such as insulation, windows and doors, heat pumps, solar PV, and ventilation – the OSS grant offers the highest level of support.

• To qualify, works must achieve at least a B2 BER rating or better.
• In addition, the grant value is deducted upfront from your project costs, reducing your cash outlay.
• Most importantly, Retrofit Design – as a registered SEAI One Stop Shop – manages the full process for you, from grant application to project delivery.

SEAI Better Energy Homes (BEH) Grants

For homeowners who want to upgrade step by step, the Better Energy Homes (BEH) scheme is a flexible option. Instead of a full deep retrofit, you can apply for individual measures such as:

• Attic or wall insulation
• Heating controls
• Solar PV panels

Unlike the OSS scheme, BEH grants are paid after works are complete and inspected. However, they remain a popular choice for homeowners who wish to start small, focus on the most urgent improvements, or plan a phased retrofit over time.

Every home is different, but typical costs are:

• Single upgrades (insulation, heating controls, solar PV): €3,000 – €10,000
• Deep retrofits (whole-home upgrades to B2 BER or better): €30,000 – €70,000

While these numbers can seem daunting, SEAI grants reduce costs by 30–80% depending on your home and the measures chosen. Pairing this support with green loans makes a retrofit financially achievable.

Many Irish banks and credit unions now offer green home improvement loans, with preferential rates for energy-efficient projects.

Key Benefits

• Lower interest rates than standard loans
• Repayment terms up to 10 years
• Available from credit unions, main banks, and SBCI-backed providers
• Can be combined with SEAI grants for full coverage

This grants-plus-finance model makes retrofitting affordable, flexible, and future-proof.

• Secure SEAI Funding: Current grant levels are confirmed for 2025, but future budgets may change. Acting now ensures you lock in today’s supports.
• Affordable Finance: Green loans spread the cost of retrofits over time, so you don’t need a large upfront payment.
• Immediate Benefits: Upgrades deliver instant results: lower bills, improved comfort, and a warmer, greener home.

Acting now secures today’s supports, locks in energy savings, and helps you enjoy a warmer, greener home sooner.