Indonesia is tightening state control over the world's largest nickel supply after years of betting the metal would anchor a homegrown electric-vehicle industry, and just as global demand begins shifting away from heavy reliance on nickel.

The move could still ripple through global EV supply chains as the United States and China compete for critical minerals. Indonesia sits at the center of the nickel market: its share of global supply jumped to about 60% in 2024 from 31.5% in 2020, according to S&P Global Market Intelligence, after former President Joko Widodo banned raw ore exports, drawing a surge of Chinese-backed investment into refining.