Based in Malaga, Western Australia, UON provides the mining and resources sectors in the Asia-Pacific with power, air and water solutions including mine dewatering and diesel generators for sale or hire. UON has signed major contracts with Rio Tinto and BHP but also works with local mining companies in WA.
In 2019, UON announced Macquarie Bank as a strategic investor of the company.
In December 2020, UON won the Western Australian Business of the Year award at Business News's inaugural RISE Business Awards. It was also voted Large Business of the Year by the judges.