A large green hydrogen project in western China was announced this year as the "world's largest" solar-powered hydrogen production and storage facility. The claim isn't fabricated, it's one of several "world's largest" claims currently circulating in green hydrogen, each measuring something different.

What this project actually claims: the largest installed electrolyser capacity paired directly with a dedicated solar array at a single site.

What it doesn't claim: it isn't the largest by annual hydrogen output, other projects elsewhere claim larger output volumes on a different measurement basis.

The bottom line: a genuinely large, real project. "World's largest" claims in this sector should be read as "largest by this specific measure," not an outright record over every other project on the planet.