It's probably because they appear to be cranks who keep promising results right around the corner and never deliver. Here's a story from 10 years ago about how

It's probably because they appear to be cranks who keep promising results right around the corner and never deliver. Here's a story from 10 years ago about how Brillouin's technology can generate electricity for 1 cent per kilowatt hour, linked from their official blog at the time [1]: https://web.archive.org/web/20130515012248/http://pesn.com/2012/04/19/9602078_Brillouin--Understanding_How_LENR_Works_Will_Enable_Us_to_Be_First/ https://web.archive.org/web/20130515012248/http://pesn.com/2... If they had an empirically working device, by now they could just be using it generate heat and/or power and leave it up to better-funded institutes to figure out the mechanism after the fact. Since they're not selling the devices and they're not selling power, and they've been "iterating" for years, I don't think that they actually have anything. [1] https://web.archive.org/web/20130421190244/http://brillouinenergy.blogspot.com/ https://web.archive.org/web/20130421190244/http://brillouine...