Micron breaks ground on $9bn Hiroshima expansion to chase AI memory demand

https://media.thenextweb.com/2026/05/Micron.avif

Micron Technology broke ground on Saturday on a ¥1.5 trillion, roughly $9.3bn, expansion of its factory in Hiroshima, western Japan, the company’s latest bet on the AI memory boom that has already pushed its market value past $1 trillion.

The Boise, Idaho based chipmaker will use the site to produce high-bandwidth memory, the stacked DRAM that sits next to GPUs inside AI accelerators from Nvidia and other customers.

Commercial shipments from the expanded facility are expected to begin around the summer of 2028.

That is a long runway in an industry where HBM has become the binding constraint on AI infrastructure, and Micron is only one of three companies in the world that can make it at scale.

Japan’s Ministry of Economy, Trade and Industry has committed up to ¥500bn toward the project’s capital costs, according to Bloomberg’s reporting on the groundbreaking.

Add in research and development support...

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