An Italy-based start-up company called Enapter was among the winners of the first ever Earthshot Prize — billed as the Oscars for environmental innovation — with a compact and modular anion-exchange membrane electrolyser for producing green hydrogen.

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The five winners collected £1 million ($1.37 million) in prize money at a star-studded London ceremony, where natural history broadcaster David Attenborough made a stirring speech.

Enapter won in the “Fix Our Climate” category in the event.

The winner's name was incorrectly switched to the name of its technology, AEM Electrolyser, when announced by British actress Emma Watson, of Harry Potter fame.

Co-founder Vaitea Cowan was not too worried about the mistake, describing winning this prize as recognition that it is going in the right direction.

“Our ambition is to make a simple and easy to integrate electrolyser that is also software enabled. You can think of it as Lego-blocks. You plug them in, connect to an energy set-up and you can easily produce on-site hydrogen,” she told BBC radio.