An Bord Pleanála has decided to grant planning permission, on appeal, for the development of 12 Irish whiskey maturation warehouses at Moyvore in Co Westmeath.
The warehouses, to be developed by Vault Storage Limited, will have the capacity to hold 200,000 casks of whiskey in maturation.
The proposed €140m development had previously been refused by Westmeath County Council.
It is expected to create almost 100 jobs in the area.
The production process for Irish whiskey is legally defined in both the Irish Whiskey Act 1980 and the Irish Whiskey Geographic Indication Technical File.
An essential part of the production process is the requirement that Irish whiskey must be matured in wooden casks on the island of Ireland for a minimum of three years.