Grant Support for Solar Thermal Installations
Ireland
Residential
SEAI Home Energy Grant
Capital grant of €1,200 (for homes build and occupied before 2021)
More information: Grant For Solar Water Heater | Home Energy Grants | SEAI


Commercial
SEAI Business Energy Upgrade Grant
SEAI: Capital grant of 30% (up to €15,000) for all businesses, agricultural sector, public sector, community groups and charities.
More information: Solar Thermal Grant for Business | SEAI
Northern Ireland
Commercial
InvestNI Energy Efficiency Capital Grant
Capital grant for commercial installations up to £150k, subject to company size and project cost.
More information: Energy Efficiency Capital Grant | Invest Northern Ireland
NISEP & Power NI Heating Technology Capital Grant
Delivered by Power NI under the NISEP Scheme - refer to Page 33 on the list of schemes, Northern Ireland Sustainable Energy Programme - List of Schemes - April 2026 to March 2027
More information: Northern Ireland Sustainable Energy Programme - Energy Saving Trust