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2026 grant · Ireland

SEAI Solar Grant & Payback Calculator

The 2026 domestic solar grant remains capped at €1,800. Payback depends not just on panel size but on roof orientation, self-consumption, export payments and whether a battery is added.

Interactive tool

Enter your details

Eligibility, the grant, an estimated installed cost before and after it, annual generation, what that energy is worth on your bill, export income and simple payback.

Step 1 of 3Eligibility
  1. Eligibility, step 1
  2. System · Use, step 2
  3. Rates · Cost, step 3

Eligibility

Are you an eligible owner or landlord?
Was the home built and occupied before 2021?
Has this MPRN already had an SEAI solar grant?

The grant is recorded against the electricity meter, so a previous owner’s claim still counts.

Nothing is saved. Your inputs are used only to calculate this result.

Personalised answer

Your result stays in view

Complete 3 short steps and this panel fills with your answer.

  • A direct answer to the question, in one line
  • The figures behind it, broken down
  • Practical next steps and the assumptions used

Before you begin

What this tool needs

  • Use the exact kWp from the quote, not the panel count alone.

  • Enter your supplier’s export payment and import rate because their spread drives payback.

Reading the answer

What your result means

Payback combines avoided imports and paid exports. It is not a guarantee of future tariff values.

A battery can increase self-consumption while also increasing capital cost enough to lengthen payback.

Boundaries

Assumptions and limitations

Working assumptions

  • Grant: €700/kWp for the first 2 kWp and €200/kWp for the next 2 kWp, capped at €1,800.
  • Generation uses 900 kWh/kWp/year before orientation adjustment.
  • When no quote is entered, cost is estimated as €2,500 plus €1,100/kWp, and €3,000 more for a 5 kWh battery.

Where to be careful

  • A professional yield estimate should model roof pitch, horizon, shading and local losses.
  • Approval must be in place before work begins and an SEAI-registered company must be used.

Common questions

Questions about this tool

How much is the domestic solar grant in 2026?

SEAI states €700 per kWp up to 2 kWp, then €200 per additional kWp up to 4 kWp, with a maximum of €1,800.

Does adding a battery increase the solar grant?

No standalone battery amount is added to this domestic solar-PV grant calculation.

Continue the decision

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