South African plants owned by Glencore and Petroliam Nasional that make up 43% of the nation’s oil-refining capacity are expected to stay shut until at least 2022, according to energy consultant Citac. Astron Energy, a unit of Glencore, has yet to restart the 100 000 bl.d Cape Town refinery after a deadly explosion and fire in July. Petronas unit Engen Holdings’ Durban plant also stopped production in December after a fire.