Volcanic ash 'could store unused green power'

G7 leaders recently committed to huge expansion of energy storage to help world meet target of tripling renewables by 2030

Volcanic eruptions can spew millions of tonnes of ash for miles around.
Volcanic eruptions can spew millions of tonnes of ash for miles around.Photo: Flickr/NASA/Johnson Space Flight Center/Image Science & Analysis Laboratory
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Published 13 May 2024, 08:09Updated 13 May 2024, 09:07