Last updated: September 2026
The Home Energy Upgrade Loan Scheme is the cheapest home improvement loan in Ireland for energy works, and the missing piece most people don’t know about: government-backed loans of €5,000 to €75,000 at rates from about 3% – roughly half typical personal-loan rates – specifically for energy upgrades that already qualify for SEAI grants. It exists to solve the real blocker in Irish retrofitting: the grants are generous, but the homeowner still has to bridge the rest. This guide explains who qualifies, the conditions (the 20% BER improvement rule is the one that catches people), which lenders offer it, and how to stack it with grants so a €30,000 retrofit stops being a fantasy number.
⚡ Quick Summary
🌿 What: low-cost loans of €5,000-€75,000 per property over 1-10 years for energy upgrade works.
🌿 Rates: from around 3% at banks; 2.99-4.5% at participating credit unions – far below standard personal loans.
🌿 The two big conditions: the work must qualify for an SEAI grant, and must improve your home’s BER by at least 20%.
🌿 The 75% rule: at least three-quarters of the loan must fund energy works – up to 25% can cover related non-energy improvements.
🌿 Where: AIB, Bank of Ireland, PTSB and a number of credit unions – eleven lenders in all.
🌿 Why it matters: grants cover part of a retrofit; this bridges the rest without mortgage top-up hassle or credit-card rates.
🏦 How the Scheme Works
The State (through the SBCI, with EU backing) partially guarantees these loans, which is why lenders can price them so far below normal unsecured lending:
🌿 Amounts: €5,000-€75,000 per property – and up to three properties (€225,000 total) per applicant, which landlords should note.
🌿 Terms: 1 to 10 years, unsecured – no charge on your home.
🌿 Rates: from ~3% (banks) and 2.99-4.5% (credit unions) – against typical personal-loan rates roughly double that, the saving on a €30,000/7-year loan runs to thousands.
🌿 The grant connection: you must qualify for an SEAI grant route for the works – the individual Better Energy Homes grants, the One Stop Shop scheme, or the Community scheme.
✅ Do You Qualify?
🌿 The works test: the upgrade must be SEAI-grant-eligible – insulation, heat pumps, solar, heating controls, windows within a wider retrofit and so on.
🌿 The 20% BER rule: the project must lift your home’s energy performance by at least a fifth – a single small measure (just attic insulation in an otherwise-poor house) may not clear the bar, which nudges borrowers toward meaningful bundles. Your BER assessor or One Stop Shop models this before you commit; our BER cert guide covers the assessment itself.
🌿 The 75/25 split: at least 75% of the money funds the energy measures; up to 25% can cover sensible add-ons done at the same time.
🌿 The usual lending tests: it is still a loan – income, credit history and repayment capacity apply as normal.
🧩 Stacking It: Grants + Loan, A Worked Example
Take a 1990s oil-heated semi doing the classic bundle – cavity wall and attic insulation, an air-to-water heat pump and solar PV:
🌿 Gross cost: roughly €30,000-€35,000.
🌿 Grants: €1,300 cavity + €1,300 attic + up to €12,500 heat pump stack + €1,800 solar ≈ €16,900 off.
🌿 The bridge: the remaining ~€15,000-€18,000 on this scheme at ~3% over 7 years ≈ €200-€240 a month – against which the household stops buying 1,500+ litres of oil a year (€2,000+ at current prices) and cuts its electricity bill with solar.
🌿 The BER bonus: the same works typically jump the rating several bands – unlocking green mortgage rates worth more again.
For many homes the monthly loan repayment lands close to the energy savings – the retrofit funds itself in cash-flow terms, which is precisely the scheme’s design.
📝 How to Apply
🌿 Step 1: scope the works with SEAI-registered contractors or a One Stop Shop, and confirm the projected BER improvement clears 20%.
🌿 Step 2: confirm SEAI grant eligibility for the package (approval before works, as ever).
🌿 Step 3: apply to a participating lender (AIB, Bank of Ireland, PTSB or a listed credit union) with your works documentation.
🌿 Step 4: works, grant drawdown, post-works BER – the loan covers the balance throughout.
⚠️ Common Mistakes to Avoid
🌿 Assuming any energy work qualifies: the SEAI-grant link and 20% BER test are hard rules – confirm both before signing anything.
🌿 Borrowing for a single small measure: one measure alone often fails the 20% test – bundle works, which is also where the economics sing.
🌿 Not comparing lenders: 2.99% vs 4.5% on €40,000 over 10 years is a four-figure difference – the credit union down the road may beat your bank.
🌿 Ignoring the free money first: if you qualify for the Warmer Homes Scheme, that comes before any borrowing.
🌿 Skipping the cash-flow maths: put the energy savings against the repayment – it reframes the decision from “can I afford the loan” to “can I afford the oil”.
❓ Frequently Asked Questions
🔹 What is the Home Energy Upgrade Loan Scheme?
A government-backed scheme offering €5,000-€75,000 unsecured loans at rates from ~3% for SEAI-grant-eligible home energy upgrades, repayable over 1-10 years.
🔹 What interest rate will I pay?
Participating banks start around 3%; credit unions range 2.99-4.5% – roughly half typical personal-loan pricing, thanks to the state guarantee.
🔹 What are the conditions?
The works must qualify for an SEAI grant, must improve the home’s BER by at least 20%, and at least 75% of the loan must fund the energy measures.
🔹 Which lenders offer it?
AIB, Bank of Ireland, PTSB and eight credit unions currently participate – compare rates across them before applying.
🔹 Is this the same as a home improvement loan?
It is a home improvement loan with a narrow purpose: at least 75% of it must fund SEAI-grant-eligible energy works – insulation, heat pumps, solar, windows and doors, heating controls – and the home must improve its BER by 20%. A kitchen, an extension or a bathroom cannot be funded by it, though up to 25% of the loan can go on related non-energy work. For general home improvements, the alternatives are a credit union home improvement loan, a bank personal or “green” loan, or a mortgage top-up; compare the APR and the total cost of credit, and use this scheme for the energy share of a bigger project where it qualifies.
🔹 Can landlords use it?
Yes – up to three properties per applicant (€225,000 total), making it one of the few retrofit finance routes that scales for small landlords.
🔹 Is it better than a credit union loan or mortgage top-up?
It is typically cheaper than standard unsecured loans and far less hassle than remortgaging; a very low fixed-rate mortgage top-up can compete – compare total cost of credit for your numbers.
📚 Related Guides
🌿 SEAI Grants
🌿 Home Improvement Grants
🌿 Warmer Homes Scheme
🌿 Windows & Doors Grant
🌿 Vacant Property Grant
🌿 Boiler Replacement Grant
🌿 Electric Car Grant
🌿 Retrofitting
👉 All guides and calculators
Climate Jargon Buster is an independent resource providing plain-English information on climate, energy and sustainability topics for an Irish audience. This is general information, not financial advice – rates, terms and lender participation change; check current details with the SBCI, SEAI and lenders before applying. Grant amounts are correct as of August 2026 and are set by the SEAI – see seai.ie for official scheme terms.