The electrolytic process required large amounts of cheap electricity, which could easily be provided by hydro-electric power in the Scottish Highlands. The first aluminium ingots were produced at Foyers in the highlands in 1895 with the first hydro-electric powered smelter opening in 1896 followed by two more, at Kinlochleven in 1909 and Lochaber in 1929. Unsuccessful attempts at bauxite extraction in Northern Ireland forced the company to acquire a controlling interest in Union des Bauxites of Southern France. This established source was supplemented by the acquisition of bauxite rights in British Guiana during World War I followed by more in the Gold Coast (now Ghana), in 1928.