Solar Power at Night
A Moment of Science

Solar Power at Night

B2Upper-intermediateNovember 10, 20262 min
  • Documentary
  • Science

Solar Power at Night

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They can help us solve the crisis of global climate change by providing a way to generate

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0:00

Photovoltaic solar cells generate electricity from the energy contained in sunlight. They can help us solve the crisis of global climate change by providing a way to generate electricity without burning climate-warming fossil fuels. But unfortunately, they come with a significant downside.

0:22

They don't generate electricity at night when the sun isn't shining. Remarkably, there might actually be a way to partly overcome this limitation. In 2022, a team of engineers based in Australia and England published a scheme for generating a small amount of electricity from solar energy at night.

0:42

How could they do this? During the daytime, Earth's crust absorbs sunlight and heats up. At night, Earth radiates this stored heat into the cold of deep space as infrared radiation. visible sunlight, this infrared radiation contains energy and can be used to generate

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