Query: The carbon tax is partly to blame for the closure of Alcoa's Point Henry aluminium smelter.

Relevant passages:
Alcoa <=SEP=> Alcoa Corporation ( from Aluminum Company of America ) is an American industrial corporation . It is the world 's fifth largest producer of aluminum , with corporate headquarters in New York City . From its operational base in Pittsburgh , Pennsylvania in the United States , Alcoa conducts operations in 10 countries . Alcoa is a major producer of primary aluminum , fabricated aluminum , and alumina combined , through its active and growing participation in all major aspects of the industry : technology , mining , refining , smelting , fabricating , and recycling .   In May 2007 Alcoa Inc. made a US$ 27 billion hostile takeover bid for Alcan in an attempt to form the world 's largest aluminum producer . The bid was withdrawn when Alcan announced a friendly takeover by Rio Tinto in July 2007 .   On November 1 , 2016 , Alcoa Inc. split into two new entities : Alcoa Corporation , which is engaged in the mining and manufacture of raw aluminum , and Arconic , which processes aluminum and other metals .   In April 2017 , Alcoa announced it will move its headquarters back to Pittsburgh effective September 1 .

Point Henry smelter <=SEP=> The Point Henry aluminium smelter was located near Geelong , Victoria in the suburb of Moolap prior to its closure in 2014 . The smelter had a production capacity of 185,000 tonnes of aluminium a year . It was operated by Alcoa World Alumina and Chemicals Australia , a joint venture between Alcoa ( 60 % ) and Alumina Limited ( 39.25 % ) . Alumina was brought in by ship and unloaded at a dedicated pier , and approximately half of this finished aluminium was sold to the neighbouring Alcoa Australia Rolled Products plant , where aluminium was rolled into sheet for can manufacture . The remainder of the aluminium was despatched by road as ingots . Around 1000 people were employed at the Point Henry plant .   Construction of the smelter at Point Henry commenced in 1960 by the Cavalier Construction Company . Smelting commenced in 1962 , with full production commencing on 4 April 1963 . The initial electricity supply to the smelter was a 220 kV transmission lines from the Geelong Terminal Station direct to the smelter . When production started , the maximum power demand of the smelter was 39.76 Megawatts ( MW ) . By June 1964 it was 68.38 MW , and by October 76.6 MW -- more than the entire Geelong region 's demand . In November the following year it was 78.88 MW , February 1967 79.84 MW , and 140 MW by 1969 . On 20 March 1969 Alcoa 's own brown coal-fired Anglesea Power Station was brought on line . With 150 MW capacity , the power station was connected to the smelter by around 30 kilometres of high-voltage transmission lines , and was used to augment the supply from the Victorian electrical grid .   The power demand of the smelter was 360 MW for a 185,000 tonne annual production capacity in 2014 , of which approximately 40 per cent was met by the Anglesea power station . The Point Henry smelter , along with the smelter at Portland , used 18 to 25 per cent of Victoria 's electricity production during the 2000s . In March 2010 it was announced that the operators of Loy Yang A power station ( Loy Yang Power ) had signed a contract with the smelter operators for the supply of electricity to power aluminium smelters at Portland and Point Henry until 2036 , the existing power contracts expiring in 2014 .