Energy firm Energia has acquired numerous new wind farms which could power up to 33,000 homes in Northern Ireland.
The company bought 12 facilities at Long Mountain in Antrim and Clondermot in Londonderry.
Energia Renewables is also in the final stages of construction of its Hollyford wind farm in Tipperary, where all its turbines will start exporting power shortly.
Having cost £15m to develop, this farm's three wind turbines will generate 9MWs of power. Energia's total investment in Hollyford and the recently acquired wind farms will be over £87m.
Managing director Peter Baillie said Energia is now supplying over 600MWs of energy.
"This green energy will help to power businesses across Ireland," he said. "We are on track to supply over 1,000MWs by the middle of this decade. Energia Group remains one of the most significant contributors to the achievement of Ireland's renewable targets and one of the largest investors in the renewable sector.
"To date, Energia Renewables has invested over €200m (£168m) in developing renewable sources of energy including our portfolio of Irish wind farms.
"All of our wind farm developments bring significant benefits to the local economies, including job creation, increased rates for the local authorities and improvements to local infrastructure."