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Yeti-Rampage t1_iqy0hjj wrote

Reply to comment by ElectrikDonuts in Solar power world record broken with ‘miracle material’ by NickDanger3di

Different metric - solar energy efficiency means you’re capturing X% of solar radiation, which is both massive and free.

EV efficiency means you’re converting X% of input electricity to power. The input electricity comes from power plants, and is costly.

I always caution against comparing solar cell efficiency to other technologies.

FYI Solar cell efficiency hits theoretical limits around low-30% for single junction, maybe 50% or so for dual junction. World record is a 3-junction around 39% I think from the company Solar Junction.

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ElectrikDonuts t1_iqy1xza wrote

Im comparing the EV to the ICE comment

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Yeti-Rampage t1_iqy3xbe wrote

I think I figured out the confusion - ICE can mean “internal conversion efficiency” in the context of a solar cell (and in fact 33% is a good number for 2-junction solar conversion efficiency).

But the comment above was about “internal combustion engine” (also abbreviated ICE).

Hence your EV comparison makes sense.

Apologies for the misunderstanding!

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