Scientia Professor Martin Green of the University of New South Wales in Sydney, poses for photos in Helsinki, Finland, on October 24, 2022. - Green on October 25 has been awarded with the 2022 Millennium Technology Prize for his innovation that has transformed the production of solar energy. The prize worth one million euro is awarded every two years. - Finland OUT (Photo by Markku Ulander / Lehtikuva / AFP) / Finland OUT (Photo by MARKKU ULANDER/Lehtikuva/AFP via Getty Images)
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The ‘Father of Solar PV’ who made solar energy affordable

An unassuming lab in Sydney helped spark a global solar revolution. Professor Martin Green and his team developed a solar cell so efficient it became the most widely used on Earth — driving down costs and helping make solar the cheapest source of electricity in history.

1:23 • Source: CNN
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Scientia Professor Martin Green of the University of New South Wales in Sydney, poses for photos in Helsinki, Finland, on October 24, 2022. - Green on October 25 has been awarded with the 2022 Millennium Technology Prize for his innovation that has transformed the production of solar energy. The prize worth one million euro is awarded every two years. - Finland OUT (Photo by Markku Ulander / Lehtikuva / AFP) / Finland OUT (Photo by MARKKU ULANDER/Lehtikuva/AFP via Getty Images)
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The ‘Father of Solar PV’ who made solar energy affordable
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US President Donald Trump speaks during a press conference in the Brady Press Briefing Room of the White House in Washington, DC, on February 20, 2026. US President Donald Trump will hold a press conference Friday to discuss the Supreme Court's ruling against a major part of his tariffs, spokeswoman Karoline Leavitt said. (Photo by Mandel NGAN / AFP via Getty Images)
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