The European Investment Bank and Avant Money are supporting €75m of new green investment for homeowners nationwide.
The new funding initiative aims to cut domestic energy bills and reduce carbon emissions as well as contribute to delivering the country's National Climate Action Plan.
The funding will be used to support the "energy rehabilitation" of homes across Ireland, including energy efficiency measures and small-scale renewable energy installations.
These are all expected to bring positive environmental impacts as well as extend the useful life of buildings.
Ireland is the first country in Europe to benefit from homeowner financing backed by the Private Finance for Energy Efficiency initiative, a joint scheme backed by the European Investment Bank and European Union.
"Personal action can help to tackle climate change and investing in energy efficient homes reduces energy bills and helps to reduce carbon emissions. The European Investment Bank is committed to scaling up climate action and is pleased to work with Avant Money to unlock €75m of energy efficiency investment in homes across Ireland in the years ahead," EIB Vice President Christian Kettel Thomsen said.
"The EIB is working with private and public partners across Ireland to harness clean energy and reduce emissions and this partnership is enabling homeowners in Ireland to be the first to benefit from targeted support under the visionary Private Finance for Energy Efficiency scheme," he added.
Sean Sheehan, Head of Strategic Partnerships for Avant Money, said that sustainability and supporting the green economy is a key focus for Avant Money.
"We are incredibly proud to be the first consumer finance company in Europe to bring to the market funding backed by the European Investment Bank's Private Finance for Energy Efficiency (PF4EE) scheme," Mr Sheehan said.
"This funding allows us to help Irish homeowners take an active part in the National Climate Action Plan by making their homes more energy efficient; reducing emissions, cutting down on energy wastage and doing their part for the green economy at affordable rates," he added.