Comment on New chemical trick pushes perovskite solar cells past 26% record efficiency

GreatWhite_Shark_EarthAndBeingsRightsPerson@piefed.social ⁨17⁩ ⁨hours⁩ ago

• paraphrand@lemmy.world ⁨14⁩ ⁨hours⁩ ago

  This isn’t exactly like wasting coal generated electricity through inefficiency. It’s not like we are wasting limited sun.

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• Fermion@mander.xyz ⁨16⁩ ⁨hours⁩ ago

  en.wikipedia.org/wiki/Shockley–Queisser_limit

  Tl:dr The max theoretical efficiency for a silicon solar cell is estimated to be 29.4% with real world high end modules topping out at 26.8%

  26% in a lab is not the same as 26% in the field after 5 years, but it is nonetheless a good result.

  Solar scales out well, so low conversion effiency isn’t really what determines whether an installation is feasible or not.

  If you’re evaluating cheap 20% efficient panels vs expensive 25% efficiency panels, you need only scale up the area of cheap panels by 25% to match output. Plus, panels that start at a lower efficiency experience less derating over time, so the difference in performance diminishes as an installation ages.

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• scrubbles@poptalk.scrubbles.tech ⁨12⁩ ⁨hours⁩ ago

  Haw haw haw oh man you sure gotcha’d them. They’re all so STUPID and you n me we’re the SMART ones!

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• blueworld@piefed.world ⁨16⁩ ⁨hours⁩ ago

  Many commercially installed panels are around 21% efficiency. That’s up from about 18% even ten years ago. There are panels that dramatically higher in conversion, but they tend not to be cost-effective or capable of lasting. Wikipedia has an article on it, and a chart that show the highest research cell NREL has tested is 47.6%. To quote “They reach their highest potential when the incoming sunlight is concentrated by lenses onto miniature solar cell devices of just a few square millimeters in size.” So not production ready nor large deployment.

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• TropicalDingdong@lemmy.world ⁨17⁩ ⁨hours⁩ ago

  26% issue utterly insane and depraved.

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• Trudge@piefed.social ⁨17⁩ ⁨hours⁩ ago

  Not today, but it would have been pretty impressive in the 80’s. This is a newer type of cell, so let’s see how it does as the technology matures.

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• eleitl@lemmy.zip ⁨17⁩ ⁨hours⁩ ago

  Try buying a commercial silicon PV module with 26%.

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