Anyone heard of the super interesting off grid energy brand called exowatt?

Here’s the link to their website site first and foremost: https://www.exowatt.com/

To summarize what they do they’re basically a solar energy generation brand that uses the heat from the sun to superheat concrete which then runs a sterling engine. I think it’s probably the coolest thing to date for reusable energy and quite genius.

I guess my question is does anybody know of anyone selling anything like this to the general public? I know this brand is only gonna sell to AI data centers but does anyone know of something similar that is smaller scale that I could buy or build?

Plus I think a concept similar to this would actually be far more feasible to build off grid in a survival scenario rather than a typical solar panel, so if anyone has any ideas on building anything similar that would be awesome. Or buying one is ok too!

Thanks for any suggestions!