Up until its closure it produced up to 142,000 tonnes of aluminium every year and was the biggest single user of electricity (255 MW) in the United Kingdom.

[1][2] Alumina and coke shipped from Jamaica and Australia would berth at the company's private jetty in Holyhead harbour.

A spur rail link from the main North Wales Coast Line runs into the plant and was used for both receipt of raw materials and despatch of aluminium.

Anglesey Aluminium was used as a base load for Wylfa and saved the grid the cost of keeping a power station on standby.

[3][4] The aluminium re-melt facility initially remained open after the shut down of the smelter, but its closure was announced in February 2013.