Solar panel price calculator
Set your yearly electricity use and choose a battery to see the system size, the price before and after the SEAI grant, and how long it takes to pay back.
Solar panel price calculator
Your annual kWh is on your electricity bill. The Irish average is about 4,200 kWh.
- Suggested system
- 10 panels (4.4 kWp)
- Price before grant
- €8,300–€9,000
- SEAI grant
- €1,800
- Price after grant
- €6,500–€7,200
- Estimated saving per year
- €991
- Payback
- 7 years
Assumes 35c per kWh for electricity you buy, 19c per kWh for electricity you export, and a home built and occupied before 2025 so the SEAI grants apply. Battery prices assume it is fitted at the same time as the panels.
How the calculator works
- It picks the system whose yearly generation is closest to your electricity use, from the same price table used across this site.
- The solar grant is €700 per kWp for the first 2 kWp and €200 per kWp for the next 2 kWp, capped at €1,800. A battery of 5 kWh or more adds the €600 battery grant.
- Without a battery, 40% of the electricity is assumed to be used in the home and the rest exported. A battery raises the share used in the home.
- It does not allow for shading, roof direction or future price changes.