The agreements involve supply of 198 petajoules of gas from Warrego Energy, ExxonMobil and Chevron.

This, along with Alcoa’s existing gas contracts, will support the company’s Kwinana, Pinjarra and Wagerup alumina refining operations over 10 years.

Alcoa vice president of operations – Australia, Michael Gollschewski said reaching these new agreements demonstrated the company’s long-term commitment to its Western Australian operations and provided a positive outlook for its employees, suppliers and communities.

“The addition of new market entrant, Warrego, to our gas supply portfolio continues our decades-long support of the WA gas industry, which has underpinned the state’s economic prosperity since the 1980s,” he said.

“As the state’s largest domestic gas consumer, Alcoa has contributed to the development of the North West Shelf gas project and Dampier to Bunbury pipeline.”

Alcoa supplies the Kwinana, Pinjarra and Wagerup alumina refineries with bauxite from its Huntly and Willowdale mines in Western Australia.

The company employs more than 3800 people in the state.