What happened

Idemitsu Kosan ended refining at its 120,000 bbl/d Yamaguchi refinery — about 10% of the group's total capacity — in March 2024, citing continued decline in Japanese gasoline demand amid decarbonization and an aging population. The site is being converted into a carbon-free energy and resource-recycling base through the 2030s. This was a voluntary commercial closure, not an incident or attack.

When cited sources give different casualty, damage or spill figures for this event, they’re reported side by side above rather than merged into one number. See how confidence levels work.