Testrunsonfiveplantswhichrunonbunker-Coilendedpositively.TheSouthKoreanTradeMinistryhasapprovedtheuseofbio-heavyoilmadewithanimalfatfordomesticpowergenerationpurposesstartingfromJanuary2019.Testrunsonresearchusingbio-heavyoilmadeofanimalfat