Bord Gáis has officially unveiled its first power generation station, the Whitegate Power Plant in Cork, Ireland.
The firm has invested €400m ($536m) in the 445MW gas-fired plant, which is expected to supply electricity to 445,000 homes.
Whitegate is a Combined Cycle Gas Turbine (CCGT) and has an efficiency of 58.5%, the most efficient power station in Ireland, according to the firm.
Work on the project began in March 2008 and was carried out by principal contractors, Gama and General Electric.
The power plant was initially commissioned on 8 November 2010, following extensive tests, and has been tendering to offer electricity within the Single Electricity Market (SEM).