High Quality Content by WIKIPEDIA articles! Cockenzie power station is a coal-fired power station in East Lothian, Scotland, capable of co-firing biomass. It is situated on the south shore of the Firth of Forth, near the town of Cockenzie and Port Seton, 8 mi (13 km) east of the Scottish capital of Edinburgh. The station has dominated the local coastline with its distinctive twin chimneys, since it opened in 1967. Initially operated by the nationalised South of Scotland Electricity Board, it has been operated by Scottish Power since the privatisation of the industry in 1991. In 2005 a WWF report named Cockenzie as the UK`s least carbon-efficient power station, in terms of carbon dioxide released per unit of energy generated. The 1,200 megawatt power station is set to close at the end of March 2013, but there are plans to replace the current station with a Combined Cycle Gas Turbine (CCGT) power station.