Natsman wrote:
I would imagine that a wind generator small enough to fit on a streetlamp
would barely generate enough power to illuminate the lamp itself.
Can you imagine every streetlamp with a generator on top? How many would
take off? How many would fall over? How would residents sleep with the
cacophony of noise? Who would maintain them? In spells of calm, would there
be no street lighting? (Actually, I quite like the idea of no street
lighting...less light pollution.)

What about photoelcetric cells on them then? They are quite quiet. Or
sonic adapters for the wind generators. We could invent some sort of
sound powered piezo electrickery thing.