Max M wrote:
> What most of this solar cell discussion really seem to strand on is the
> energy storage. Has anybody got any knowledge about how the state of affairs
> is these days concerning decentralised energy storage. Batteries, fuel
> cells, etc?
IMO by the time we have replicators, we can consider the biological model for solar energy storage: plants store a lot of energy in a distributed manner. I'm pretty sure that the energy density of biochemical storage greatly exceeds the energy storage in a battery. For example, an adult human, at rest, has a heat output of about 125 watts. This human needs less than 1700 food calories per day to sustain this. (This is from memory, not from a reference book, so I could be wrong.) Looking at my cereal boxes, this appears to be about half a pound of cereal. I think a nanotech-based device that stores energy like a leaf will permit fairly dense distributed energy storage.