Deep-dive · Energy

A Wellington warehouse is building a piece of the sun

OpenStar levitated a half tonne magnet inside a million degree cloud of gas, for under $10 million.

Watch the reel70.9k views on Instagram
Wellington, NZWellington
Wellington, NZ

OpenStar is a Kiwi startup chasing nuclear fusion, the same reaction that powers the sun. If it works at scale, it means almost limitless clean energy.

The breakthrough

OpenStar floated a 550kg magnet inside a 5 metre vacuum chamber heated past one million degrees Celsius. They say it makes them the first commercial company to create and confine plasma using a levitated dipole reactor.

When they pulled it off, Prime Minister Christopher Luxon and All Blacks legend Richie McCaw were watching from a room above the chamber.

The scale of the bet

Around 50 companies worldwide are racing for fusion, backed by close to US$10 billion from the likes of Bezos and Gates. OpenStar’s prototype cost under $10 million.

The New Zealand government has since backed them with a loan of up to NZ$35 million to build a facility for their next machine. A loan, not a giveaway.

The founder

Founded in 2021 by physicist Ratu Mataira, in a country already running on 80%+ renewable power.

My read

Fusion is a long, expensive race and most entrants will not finish it. But OpenStar has shown a result for a fraction of what others have spent. That is the Kiwi way of doing hard things, and it is wild ambition worth backing.

The weekly email

New guides, first.

One short email a week: the best AI tip I found, and what happened in the ANZ startup scene. Five minutes, no fluff.

You're joining the jack gpt email list. Unsubscribe any time. Privacy.