The really interesting application of this sort of technology is in something I've been meaning to build for years, solar-powered air conditioning. The ammonia absorption refrigeration cycle will run from any source of heat, so certainly solar power is possible, and it leads to a useful self-regulation regime where the hotter the day, the more cold you want, and the more energy you have available to produce it.

The electrolux cycle, which is the hydrogen buffered variant, has no moving parts at all and should run virtually indefinitely. Hydrogen leakage is the real limiting factor.

Of course, for hot but overcast areas of the world where there isn't enough sunlight, one could simply use nuclear waste as the heat source...

pca