Why ArcelorMittal Cannot Restart Ukraine’s Largest Steel Plant

ArcelorMittal’s decision was driven by the danger to workers and extensive damage to production facilities, not just the plant’s commercial difficulties. On September 25, 2026, the company told Ukraine’s government it could not restart ArcelorMittal Kryvyi Rih safely and sustainably after four missile strikes in five weeks.1

What made a restart untenable?

The four attacks killed five employees and injured 17, one of whom remained in critical condition. The most recent strike occurred on September 21.114 The plant was already struggling to resume primary steel production after a strike affecting its ironmaking complex; on September 14, ArcelorMittal said repairs were still being assessed and it could not give a credible timeline for their completion.22

The dates warrant care. ArcelorMittal’s September 25 announcement refers to statements issued on August 17 and September 14 after strikes; it does not identify both dates as attack dates. Reuters reported that the August attack occurred overnight on August 16.126

The company is discussing the plant’s future with Ukraine’s government and says it will focus on preserving infrastructure to keep open the option of restarting operations later. That is a possibility, not a promised reopening date.14

What does the $1 billion impairment mean?

ArcelorMittal expects an approximately $1 billion non-cash impairment, principally related to property, plant and equipment at Kryvyi Rih.14 It is an accounting reduction in the recorded value of those assets—not an additional $1 billion cash payment triggered by the announcement. The company has also reported providing more than $700 million to support the subsidiary’s operations during the war; that earlier support and the expected impairment are different measures and should not be added together as though both were new cash losses.214

Why does the shutdown matter beyond one plant?

Kryvyi Rih is Ukraine’s largest steel plant. Reuters reported that it produced 1.7 million metric tons of steel in 2025, while Interfax reported a workforce of about 17,000. Those figures convey the scale of production and employment exposed to a prolonged shutdown, although they do not establish how many jobs will ultimately be lost.235

The decision also comes amid pressure on the wider industry. An August strike killed seven workers at the Zaporizhstal plant and temporarily halted its operations. At Kryvyi Rih, ArcelorMittal had announced closures of other units earlier in 2026, citing electricity costs linked to attacks on energy infrastructure and the cost of European environmental requirements. The September decision’s immediate cause, however, was the repeated strikes on the plant itself and the resulting inability to restart it safely.2831321