[lambdaone]

Well, solar concentrators can in (traditional physics-based) theory increase solar cell efficiency substantially: https://iopscience.iop.org/article/10.1088/0022-3727/13/5/01... . Whether that's cost-effective is a different matter.

But that's not got anything to do with Brilliant Light's claims, which so far do not stand up to scrutiny.

[dave333]

They are using concentrator photovoltaics than can handle light 1000 times more intense than normal sunlight: https://en.wikipedia.org/wiki/Concentrator_photovoltaics and the actual suncell lightsource in operation without photovoltaics video from Feb 2023 is at https://brilliantlightpower.com/commercial-suncell-initial-s...

[dave333]

It's interesting that skeptics are always vague and dismissive - I think very few have actually studied the theory - I'm not aware of any specific rebuttal other than the infamous Rathke paper that initially had a sign error in the main equation and had 5 other significant errors as stated by Mills. In any case all it was saying was logically equivalent to this apple cannot be an orange.