Astrindo Nusantara, an Indonesian investment company focusing on energy infrastructure, agreed to acquire coal business from PTT, a Thai state-owned SET-listed oil and gas company, for $471m. The announcement came as global coal demand is set to match a record high reached nearly a decade ago. The deal, which includes coal concessions in Brunei Darussalam, Madagascar and three mines in Kalimantan, Indonesia, will have a "substantial" impact for the company.