Free tool
Solar grant calculator — Ireland, 2026
Three schemes, three sets of rules. Pick what fits and see what the published rates are worth for your project — with the calculation shown, not hidden.
Rates correct at time of publication (30 August 2026) — confirm on the SEAI scheme page before you commit.
A kWp (“kilowatt-peak”) is the array’s rated capacity — its peak power under standard test conditions. What it actually produces over a year is measured in kWh. Typical Irish homes install 2–6 kWp — roughly 5–14 panels. Don’t know yours yet? Leave it at 4 — most systems reach the grant cap there.
SEAI Solar PV Grant
- Your home is in Ireland and was built and occupied before 1 January 2021
- You have a BER assessment on file — there is no minimum rating required
- The installation is carried out by an SEAI-registered installer
Your grant
€1,800
You apply to SEAI for this before any work starts — we guide the application and handle the installer, grid-notification and completion documents. Domestic installations are zero-rated for VAT, legislated to run to 31 December 2026.
Source: SEAI Solar Electricity Grant — rates €700/kWp (first 2 kWp), €200/kWp (up to 4 kWp), capped at €1,800.
The cost of the solar PV investment as approved under TAMS. The grant rate applies against a ring-fenced ceiling of €90,000 — spend above that is not grant-aided.
Solar Capital Investment Scheme (SCIS) under TAMS 3
- Systems grant-aided up to 62 kWp; battery eligible, capped at a capacity equal to 50% of the array’s rated size in kWp
- Cannot be combined with the SEAI Non-Domestic grant for the same investment
- Remaining 2026 closing date: 4 December 2026
Your grant
€24,000
Your farm advisor lodges the TAMS application — we supply the system specs, quotes and documentation it needs, and approval must be in place before installation.
Source: Solar Capital Investment Scheme (DAFM) — 60% of eligible cost against a €90,000 ceiling, maximum €54,000.
Covers the full scheme, 1 kWp to 1000 kWp. Support is stepped — the per-kWp rate falls as systems get larger:
| 1 kWp | €900 |
|---|---|
| 2 kWp | €1,800 |
| 3 kWp | €2,100 |
| 4–6 kWp | €2,400 |
| 7–20 kWp | +€300 per additional kWp |
| 21–200 kWp | +€200 per additional kWp |
| 201–1,000 kWp | +€150 per additional kWp |
SEAI Non-Domestic Microgen Scheme
- Businesses, farms, schools, public sector bodies, community groups and non-profits
- The building is a non-domestic premises in Ireland
- The installation is carried out by an SEAI-registered installer
Your grant
€6,600
Capped at €162,600, which a 1000 kWp system reaches exactly. Farms can claim under this scheme or TAMS — one scheme per investment, and we’ll help you work out which is worth more for your project.
Source: SEAI Non-Domestic Microgen Scheme — 1 kWp €900 · 4–6 kWp €2,400 · 20 kWp €6,600 · 200 kWp €42,600 · 1,000 kWp €162,600. Every band boundary in this calculator is covered by an automated test that runs on each build.
Next question is usually “and what would it save?” — try the savings calculator, or read the full 2026 grants guide.
Grant questions, answered straight
- How is the SEAI home solar grant calculated in 2026?
- €700 per kWp for the first 2 kWp, then €200 per kWp up to 4 kWp, capped at €1,800. A 4 kWp system or larger gets the full €1,800.
- Who applies for the grant — me or the installer?
- You apply to SEAI for the grant offer, and no work can start before it is issued. We guide you through the application and handle the installer, grid-notification and completion documents.
- What is the maximum solar grant for a farm?
- Under TAMS 3, solar is grant-aided at 60% against a ring-fenced investment ceiling of €90,000 — a maximum grant of €54,000, for systems up to 62 kWp.
- What is the SEAI business solar grant worth?
- Under the Non-Domestic Microgen Scheme the grant is stepped: 1 kWp €900; 2 kWp €1,800; 3 kWp €2,100; 4–6 kWp €2,400; 7–20 kWp +€300 per additional kWp; 21–200 kWp +€200 per additional kWp; 201–1,000 kWp +€150 per additional kWp. So 1 kWp is €900, 4–6 kWp is €2,400, 20 kWp is €6,600, 200 kWp is €42,600, 1,000 kWp is €162,600 — the €162,600 maximum is reached exactly at 1000 kWp.
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