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Solar for your business, with up to 45% from SEAI

For new applications made by 6 July 2027, SEAI pays up to 45% of the cost of solar for businesses, to a maximum of €325,200.

Why solar suits most businesses

You use most of your electricity in daylight, which is when the panels make it. So more of the solar is used on site at your full unit rate, and payback is usually faster than at home.

The SEAI grant

System size	Grant
1 kWp / 2 kWp / 3 kWp	€1,800 / €3,600 / €4,200
4 to 6 kWp	€4,800
7 to 20 kWp	+ €600 per kWp
21 to 200 kWp	+ €400 per kWp
201 to 1,000 kWp	+ €300 per kWp

SEAI pays the lower of the banded figure and 45% of the invoiced cost, up to €325,200. For example, a 50 kWp system is €25,200 on the bands; on a €50,000 invoice, 45% is €22,500, so €22,500 is paid. Checked on seai.ie, 13 October 2026.

The Accelerated Capital Allowance

Companies can write off 100% of the cost of solar equipment on SEAI’s Triple E register in the first year, instead of over eight years. The scheme runs to the end of 2030. How much it’s worth depends on your tax position.

Grants over €10,000 in a year need a Tax Clearance Certificate.

“Got the lads to install a 20Kw system over our offices in town… the system is absolutely flying it.”
Tullamore Rental, Google review

A commercial ground-mounted solar array seen from the air

Commercial inverters on a plant-room wall

Questions we’re asked

Who can get the 45% grant?

Businesses, farms, public sector bodies, schools, community centres and non-profit organisations, for systems up to 1,000 kWp.

Does it apply to applications made before 6 October 2026?

No. The enhanced rate is for new applications made from 6 October 2026 to 6 July 2027. SEAI says existing applications won’t be increased, and anyone who has started works can’t seek a higher amount.

Do we need tax clearance?

Yes, if you receive more than €10,000 in grants or similar payments from public bodies in a calendar year. Business customers apply online through Revenue’s eTC service.

How big a system can we connect?

Up to 6 kW on single-phase or 11 kW on three-phase goes on an NC6 form to ESB Networks. Larger systems need an NC7 application and ESB approval first, which we handle with you.