Renewable energy is likely to eventually overtake Fortescue Metals Group's FMG.AX iron ore business, despite strong tailwinds for the commodity ahead, the company's former chief executive officer Elizabeth Gaines said at Davos. Fortescue would continue growing its iron ore business, but the scale of the world's green energy transition would boost demand for renewable energy far more, said Gaines, non-executive director and global green ambassador at Fortescue, on the sidelines of World Economic Forum's annual meeting in Davos.