Rosslare Europort has been chosen by XELLZ as a supply base for future offshore windfarm projects in the Irish and Celtic Sea as well as UK east coast and continental Europe.
The Dutch firm has secured 200,000 sq m of land next to the port.
This will be segmented into zones and the new Rosslare Europort Business Park will be built there.
The Dutch business will subsequently develop an offshore wind farm supply base for delivery of turbines and other components, through subsidiaries 24shore and XELLZ Ireland.
"Today marks the real beginning for this development to serve the future offshore wind farms in the Irish and Celtic Sea," said Petrus Bouwhuis, CEO of XELLZ B.V.
"EBP's land gives direct access to the quay for loading and offloading of offshore wind equipment, and we are now ready to talk to interested parties."
The area also has space for small to medium enterprises (SMEs) who may want to provide maintenance, operational and repair services to the renewable energy market.
"Rosslare Europort is ideally positioned to be the gateway for the development of Offshore Wind Energy in Ireland," said Glenn Carr, General Manager Rosslare Europort.
"We have the potential capacity, infrastructure and land to ensure that the Republic of Ireland has the right strategically placed port to facilitate the growth of this vital sector as we address environmental challenges in the years ahead."
A masterplan for the port was also recently finalised, while the facility has also had a new border inspection facility built in preparation for Brexit.
A new service with Brittany Ferries to Bilboa and Roscoff has also recently commenced.