Great Island Power Station is a gas fired and former heavy fuel oil fired power station situated near Waterford Harbour in Great Island, County Wexford, Ireland, that supplies electricity to more than 500,000 Irish homes.

It is located at the confluence of the rivers Barrow and Suir, near Campile.

The station opened in 1967 and was operated by the Electricity Supply Board (ESB) with three heavy fuel oil units and a total power of 240 MW since 1972.

In September 2014, the oil powered units were shut down, and replaced by a new 430 MW combined cycle gas turbine (CCGT) gas fired plant on the same site.

[6] There was a short-lived halt on the adjacent railway (Rosslare - Waterford line) used to bring workers involved in the construction of the station to and from it.