Prices of Indonesian coal are down 14% while South African coal has declined 21% in the past six months. : Thermal coal prices are on a downward spiral globally. Australian coal prices have fallen nearly 20 per cent in the past week, and 40 per cent from their peak of 2018, according to Reuters. For domestic power producers, that import coal, this should come as good news. However, the extent of benefit will be limited as Indian firms import largely from Indonesia and South Africa. “India does not import much from Australia.