Is a scifi setting of constant artificial light everywhere plausible? I'm thinking to the point that the average adult person has not gone out of a city and has no experience of general darkness (obviously he has knowledge of what night used to mean and what darkness is, under a cover for example, but not what darkness is like out in the woods). There are lights literally everywhere, in the very makings of walls/ceilings/etc with no OFF switch available.
I'm interested not only in potential implications of this, but also in explanations as to why this would happen (in a voluntary sense) and how it could be done. Closest plausible reason I have in mind is some kind of efficient energy producing and distribution method by way of light that needs to always be on, everywhere (though I'm not close to a how on this).
It's for a short story, so I may be able to dodge going too deep into it, but I want to cover problems and potential plotholes/inconsistencies.