Yeah, mirrors seem like a huge problem. Why not go with photovoltaics - a decades-old, proven technology, and just beam energy to a ground-based storage facility to be used later?

I know some amount will be lost in conversion and transmission, but you could still have underground facilities in cities providing extended daylight for good reasons, like to help people with seasonal affective disorder, or to grow crops out of season.

And then the bridge should fall on him.