Construction on the 20MW project in Fintona, County Tyrone, will be the first building work on a new wind farm in Ireland this year.
It received planning approval in 2009 and is expected to be completed by next year.
Niall Quinn, Barclays' head of structured finance for renewable energy financing, says the deal demonstrates the bank’s commitment to the renewables sector.
The news comes after Barclays announced plans to buy Swedish carbon-credit originator Tricorona for SKr1.13bn
