You know how they're talking about using earth-based lasers to power satellites, or, alternately, satellite-based power collectors to power the Earth? I'm no engineer, but why not combine the two ideas, and create a network of power reallocation satellites (essentially mechanically-operated mirrors in space?) If the satellites could reorient quickly enough, you could basically get "packet-switched wireless electricity."
And lose massive amounts of power in each direction. With a better grid in the first place, and controls to prevent this, the loss is far smaller (down to "nothing", ideally).