If such modules exist and tested out there, I'm sure there would be a use for them.
I know that the CHARS was designed to be ready to plug in a container-type structure that would actually use garbage of any type and convert it into power. It's not there yet, but it's part of the mission of the CHARS to do that kind of testing.
So yes, anything that can produce power differently from what is now being done will certainly be more than welcome. However, it's going to have to be tested and then shown to work there.