Hannah Ritchie,BBC Information, Sydney
![BBC Maia Schweizer](https://ichef.bbci.co.uk/news/480/cpsprodpb/0070/live/e6fb9140-1d6a-11ef-bf53-7391f3861154.jpg.webp)
Hidden amongst thick bushland within the outer suburbs of southern Sydney sits an expansive facility housing a technological breakthrough.
It’s right here that Australian firm SunDrive Photo voltaic makes its “particular sauce”: a brand new – high secret – components that it says has solved “a really excessive worth drawback”.
Its massive innovation? Discovering a option to change the silver utilized in photo voltaic cells with copper, which was beforehand thought unattainable.
“Silver is…
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