Located a mile (1.5 km) north of the village of St. Fergus in Aberdeenshire, the St. Fergus Gas Terminal comprises three gas-processing plants operated by the French oil company Total, Dutch multi-national Shell and Texas-based Apache Corporation. Operational from 1977 and officially opened by HM Queen Elizabeth II on 9th May 1978, the St. Fergus terminal receives and process gas from the North Sea and provide a natural gas supply throughout the UK. The Shell plant was opened by HRH Prince Charles in 1982. An adjacent distribution terminal was built by British Gas-Transco, who bought the entire output of the terminal until 2000. Initially gas was drawn from the Frigg Field, but capacity has been expanded to handle the Alwyn Field (1987), Miller Field (1991) and the Bruce Field (1993). Gas is now fed to St. Fergus from more than twenty fields. The plant now covers 89 ha (220 acres) and processes some 60 million cubic metres (2.12 billion cubic feet) of gas daily, some 15% of the UK daily requirement.
The plant removes water and heavier hydrocarbons from the gas by low temperature condensation, feeding propane and butane as liquids to BP's Kinneil Terminal at Grangemouth via the Cruden Bay Booster Station and a Shell facility at Mossmorran (Fife).