The expansion will be done via a subsidiary, Banpu Power Ltd. (BPP), which will increase its power-generating capacity to 2,400 MW by 2018 with an investment of $110 million, said Somruedee Chaimongkol, CEO Banpu. Then, from 2018-2025, the company will raise generating capacity to 4,300 MW with another outlay of $800 million. Banpu is Asean’s biggest coal miner in terms of production.