Rooftop Solar PV in Ireland has reached an unprecedented economic sweet spot. Between the €1,800 SEAI Solar Grant, 0% VAT on solar installations, and the Clean Export Guarantee (CEG), typical domestic solar systems now pay back in under 4 to 5 years.
How the Clean Export Guarantee (CEG) Works
Whenever your rooftop solar array generates more electricity than your home consumes in real-time, the surplus power is automatically fed into the ESB distribution grid. Under Irish energy market rules, your electricity supplier (e.g. Electric Ireland, Bord Gáis, Energia, Yuno) is legally mandated to pay you for every exported kilowatt-hour (kWh).
- Average Export Tariff: ~€0.24 / kWh cash credit
- SEAI Grant Support: Up to €1,800 (Capped at 4kWp)
- VAT Rate: 0% permanent zero-rating
- Annual Export Earnings: €350 – €550 / year cash returned to homeowners
Should You Add Battery Storage?
With high CEG export rates (24c/kWh), battery storage is no longer mandatory for strong financial payback. However, pairing a 5.1 kWh battery allows you to charge on cheap night-rate electricity (e.g. 8c–10c/kWh EV tariffs) during winter months, maximizing your self-consumption.
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