The solar power cost in Ireland ranges from €6,500–€17,000 before the SEAI grant, depending on system size. PV panel prices have fallen significantly, and after the grant of up to € 1,800 and with 0% VAT, a typical solar home cost for a 10 -panel (4. The average price per kWp is ~€1,750. How Much Do Solar. The solar electricity grant in Ireland is designed to support homeowners who want to generate clean, renewable energy and reduce electricity bills. While this is less than Spain or Portugal, it is sufficient to make solar panels a financially attractive investment, particularly given Irish electricity prices which are among the highest in Europe. Explore all our solar panel guides.