Breaking Down Solar Panels



Solar is one of the fast growing energy sources in the world and photovoltaic cells are the key to collecting and converting that power. But — how does it work? And how much has this technology evolved in the last century since its inception? Full playlist:

29 comments

  1. Can’t break the first law. Also the 2nd brings entropy into play. No energy producing system will ever give back more energy than what was used to create it. Even if people worked for free and didn’t eat anything while we’re making them we don’t even get close. Solar is a noble pursuit, but it’s a waste of time and money. Carbon capture and nuclear are the best options

  2. "On its own, a solar cell can create about half a volt" is correct, but she goes on to say "to increase this energy output, you can combine solar cells…". Volts are not a measurement of energy. Volts times Amps gives you power measured in Watts, and Watts over time is energy. Hence "watt hours" of energy are the Watts you collected multiplied by the time it took to collect them (or more precisely, the integral of power over time).

  3. how much useful life does each panel have? and what happens when it leaves its useful life and is no longer useful and becomes garbage? what will happen to that garbage?

  4. Wikipedia says that the Bhadla Solar Park is now the largest solar park in the world. It is located in Rajasthan, India

  5. Solar thermal range from 45% to 51% efficiency. Sadly, they can only be functionally used in larges plants near the equator. Those with pigments like fanta black, that may change.

  6. 8250 GwH by 2050 with a worldwide electrical power consumption of
    22.300.000 GwH seems a lot…not.
    And even for this goal billions of Acres of land have to be covered. And of course we have to renew every panel after 20-30 years, sounds fun.

  7. I think a field of super tall pillars would absorb more light than a 2d flat panel. They would have way more surface area while the earth spins

  8. Gallium ? How % ? It's use in space for efficiency without the radioactivity problem, is it safe for a normal long use ?

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