Motion Control Components

Coupling these "untold trillions" of molecules to work co-operatively producing a net mechanical force would be extremely difficult. Additionally, I'd presume that the heat produced by the motion of trillions of coupled molecular motors would potentially break down their structure. It's currently not a technology feasible for macro-scale applications, but for nano-scale use in medicine this could has enormous potential.

Nano motors are too complex to gang together for large-scale power generation, and huge areas would still be needed.

Concentrated solar thermal for baseload and concentrated PV for peak power will win, soon becoming cost competitive with fossil fuels.

Nano tech may contribute by making multi-junction cells even more efficient, with 6-10 junctions, but it will contribute to CPV not through nano motors.

Building-integrated thin-film may also play a modest part in solar.

Well, if you read K Eric Drexler's "Engines Of Creation", he says that with the advent of Replicators, that large scale technology will be possible. and I think we are decidedly following his prescience in this matter of Nanotechnology.

Chris