World’s First 120-Tonne Underground Battery-Electric Mining Trucks
Swedish mining company LKAB has officially commissioned two 120-tonne battery-electric mining trucks 1,250 metres underground at its Malmberget iron ore mine in the Arctic Circle. These trucks, customised by Scania as semi-trailer electric tippers, each have a payload capacity exceeding 70 tonnes and are equipped with 624 kWh battery packs. Since their trial operation began late last year, the trucks have completed approximately 1,500 round trips, transporting over 100,000 tonnes of iron ore.
Peter Gustavsson, LKAB’s electrification project manager, stated that these two trucks are believed to be the world’s largest and heaviest underground battery-electric mining trucks, specifically designed for the harsh conditions of underground mining. The trucks transport iron ore from ore passes to crushers, operating entirely 1,250 metres underground. Each charge allows for around seven hours of operation, with an 80-minute charging time at 375 kW. A single charge enables approximately 45 round trips, moving 3,200 tonnes of material.
Underground Constant-Temperature Environment an Advantage for Electric Vehicles
Pär Sundqvist, LKAB’s electrification engineer, noted that the underground mining environment is highly favourable for electric vehicles. The temperature in the mine remains stable at 12 to 15 degrees Celsius year-round, and the roads are level with predictable routes, significantly reducing challenges related to battery cooling and range. Compared to surface operations, the constant-temperature conditions underground help extend battery life and improve operational efficiency.