I like your post. I am too fascinated by the energy potential of the rocket stove.
Although I have no answer, I can think of a French inventor and youtuber called Barnabé Chaillot, who is working on a similar project. You will love his channel.
This is the video where he makes an aluminum furnace with a rocket stove. He says that next thing he will do with it is to create electricity...
Maybe you can contact him and ask him how his research is going. I dont know if he speaks English, though...
