BHP and Rio Tinto, the world's two largest mining companies, have partnered with Komatsu and Caterpillar to trial large battery electric haul trucks in Western Australia's Pilbara region, aiming to enhance performance and productivity while meeting emission reduction targets.

BHP will test Caterpillar trucks starting in late 2024, while Rio Tinto will test Komatsu trucks in 2026. Both companies have reduced greenhouse gas emissions by switching to renewable energy sources and aim to cut diesel usage further through this initiative.

Previously, these companies collaborated to develop prototype battery electric trucks and are also working with BlueScope Steel to produce green steel by 2027. Diesel consumption accounts for a significant portion of their emissions.