AIB said it raised €750m from the issuance of its second social bond yesterday.
The bank said the proceeds will contribute to the financing of projects with clear social benefits and further strengthen its funding position.
AIB plans to use the funds raised to lend to projects in the education, social and affordable housing and healthcare sectors. They will also be used to provide loans to Small and Medium Enterprises in socio-economically disadvantaged areas in communities across the country.
Last March AIB raised €1 billion through the first issuance of a social bond by an Irish bank.
AIB noted that the quality of the investor base was "very satisfying" with "excellent" participation by both Environmental, Social, and Governance (ESG) focused investors and many of the leading international investment managers who recognise the bank's strong balance sheet and ESG credentials.
It said this played an important role in supporting the scale, diversity and pricing of the order book.
"Investors are increasingly choosing to invest in firms with strong Environmental, Social and Governance credentials," the bank's chief executive Colin Hunt said.
"Recognising the importance of climate finance in funding the transition to a lower carbon future, AIB has over the last three years also raised €3.25 billion from the issuance of green bonds after becoming the first Irish bank to issue a green bond in 2020," Mr Hunt said.
"The proceeds are used for lending to projects that help in the fight against climate change, preserving our fragile planet for future generations. As a bank at the very heart of the Irish economy, AIB's role is to support our customers in the creation and delivery of sustainable economic, social and environmental development in towns and communities across the country," he added.