Cost guide · Verified May 2026
Solar PV cost in Ireland — price by system size + SEAI grant
Solar PV in Ireland typically costs €3,500–€8,000 depending on system size. The SEAI grant of up to €1,800 (capped at 4 kWp) brings the net cost to €2,100–€6,200, with a typical payback of 4–8 years when combined with the Microgeneration Support Scheme export payments.
Typical cost by system size
Most Irish homes are sized for 2–4 kWp. The SEAI grant is staged — €700/kWp for the first 2 kWp, €200/kWp for the next 2 kWp — and caps at 4 kWp (€1,800 total). Larger systems are allowed but receive no additional grant.
| System size | Panels | Typical cost | Grant | Net cost |
|---|---|---|---|---|
| 2 kWp | ~5 panels | €3,500–€5,500 | €1,400 | €2,100–€4,100 |
| 3 kWp | ~7 panels | €4,500–€6,500 | €1,600 | €2,900–€4,900 |
| 4 kWp (cap) | ~10 panels | €5,000–€8,000 | €1,800 | €3,200–€6,200 |
Worked example · 4 kWp system
Net cost after the SEAI grant
- Gross cost
- €6,500
- SEAI grant
- −€1,800
- You pay
- €4,700
4 kWp system at €6,500 mid-range, full €1,800 grant (€700×2 + €200×2). Add €3,000–€6,000 for battery storage (no grant; payback ~10+ years on the battery alone).
Payback period
A 4 kWp system generates roughly 3,200–3,800 kWh/year in Ireland. Combined self-consumption + Microgeneration Support Scheme export income typically saves €600–€900/year, giving a payback of 4–8 years on the net (post-grant) cost. Households with daytime electricity demand — EV charging, heat pump, working from home — self-consume more (avoiding the 30+ cent/kWh import price) and pay back at the fast end of the range.
Microgeneration Support Scheme export rates vary by supplier (Bord Gáis, Electric Ireland, SSE, Energia all publish their own). Compare current rates when signing your supply contract — a 5 cent/kWh difference is worth €100+/year on a 4 kWp system.
Common questions
- How much does solar PV cost in Ireland in 2026?
- A typical domestic solar PV install in Ireland costs €3,500–€8,000 depending on system size (2–4 kWp typical for a 3–4 bed home), roof orientation, scaffolding, and whether battery storage is included. The SEAI grant of up to €1,800 brings the net cost to roughly €2,100–€6,200.
- How much is the SEAI solar PV grant?
- Solar PV Grant: €700 per kWp up to 2kWp, plus €200 per additional kWp up to 4kWp, capped at €1,800. Home must be built and occupied before 2021; no previous Solar PV grant at this MPRN. Verify current rates at SEAI.ie.
- What is the payback period for solar PV?
- Typical payback is 4–8 years from a combination of self-consumption (electricity you would otherwise have bought) and Microgeneration Support Scheme export payments (10–25 cents/kWh for surplus exported to the grid). Households with daytime consumption (EV charging, heat pump, working from home) pay back fastest.
- Is solar PV worth it in Ireland with our weather?
- Yes — Irish solar PV typically generates 800–950 kWh per kWp installed per year, which is lower than southern Europe but enough for a competitive payback. A 4 kWp system generates roughly 3,200–3,800 kWh/year — about 80% of a typical home's electricity usage on paper, though actual self-consumption depends on when you use power.
- Do I need battery storage?
- It depends on your daytime usage. Without a battery, surplus generation is exported at 10–25 cents/kWh; with a battery, you store it for evening use (where avoided import is 30+ cents/kWh). Batteries add €3,000–€6,000 and are not covered by the SEAI grant — payback for the battery alone is typically 10+ years and depends heavily on usage profile.
See your exact grant amount
The navigator works out the Solar PV grant for your home and shows what other grants you may qualify for. 3 minutes, no sign-up.
Run the navigatorIndicative figures based on typical Irish market averages and SEAI-published grant rates. Actual generation and savings depend on roof orientation, shading, and household usage. Always get 3 quotes from SEAI-registered Solar PV installers.