[gliese1337]

I find that a reasonable expectation, but it will not make any difference in the ability of European homeowners to benefit form Africa's surplus of sunlight. Storage only helps when you have a sufficiently high average power in one spot, and just need to spread out the peaks and valleys in production. Fantastic storage does not help if you can't gather enough energy to store in the first place. That may not turn out to be a problem for the average European homeowner if photovoltaics get good enough, but it is the problem that kijin was addressing by suggesting sunny countries sell power to cloudy countries.

One might use excellent storage technology to, e.g., charge batteries in the Sahara and ship them to Switzerland (or, more realistically, synthesize oil in the Sahara and ship it Switzerland), but that's just a slightly more indirect way of addressing the problem of transportation- moving the energy from the place where it can be produced to the place where it is needed to be used.