South Korean steel giant Posco has announced a W16.7 trillion ($12.3 billion) investment plan focused on lithium and energy transition technologies, marking a significant expansion beyond its traditional core business.

The capital allocation underscores the company's strategic pivot toward battery materials and renewable energy infrastructure, aligning with broader national efforts to diversify industrial output.

The move comes as South Korea advances sweeping proposals to establish new manufacturing hubs, including a semiconductor cluster in the southwestern region backed by an estimated W800 trillion in corporate investment.

Posco's entry into the lithium sector adds another layer to the country's aggressive push to secure supply chains for critical minerals and next-generation energy technologies.

For markets, the announcement highlights the growing convergence between traditional heavy industry and the clean energy transition.

Investors will be watching for details on project timelines and potential partnerships, as the scale of the investment suggests a long-term commitment to reshaping Posco's revenue mix.