It was rather interesting to see the comments at the end of the story, all cynical! I guess their point was that pedal power is not the most efficient way to generate electricity. It makes sense for remote areas which don't have access to grid electricity, for the lack of other alternatives, but better options (in absolute sense) exist and should be used, when possible?

Does someone know of a comparison of different alternative energy sources - solar, wind, hydro - in terms of cost, output, efficiencies etc?