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Solar water heating grant 2026

Solar water heating. Solar thermal. Uses roof panels to heat your hot water directly from the sun, cutting the energy your boiler or immersion needs, especially in summer.

Upgrade	Apartment	Mid-terrace	Semi-D / end	Detached
Solar water heating	€1,200	€1,200	€1,200	€1,200

Standard 2026 SEAI rates, by dwelling type. Amounts are for guidance. Confirm current figures with SEAI or your installer.

How the solar water heating grant works

The grant is a flat €1,200 for a qualifying solar thermal system installed by an SEAI-registered contractor. It's a different technology to solar PV: thermal heats water, PV makes electricity, and you can grant-aid both, though not for the same roof space if it can't take them.

Am I eligible?

Your home must have been built and occupied before 2021, use an SEAI-registered installer, and have a BER assessment carried out after the work.

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Questions

Solar water heating grant, answered

How much is the solar water heating grant? +

A flat €1,200 for a qualifying solar thermal system.

What's the difference between solar water heating and solar PV? +

Solar water heating (thermal) heats your hot water; solar PV generates electricity. They're separate grants, €1,200 and up to €1,800 respectively.

Is solar thermal or solar PV better? +

Most homeowners now choose solar PV for its flexibility, but solar thermal can be very effective if you use a lot of hot water. An installer can advise on your roof and usage.