Wut? This has to be some sort of a scam. There's no way you're going to be reflecting enough light from hundreds of kilometers away.
It's not. USSR and Russia experimented with space mirrors and was able to light significant territory. It was a successful program, but in 1993 Russia had no money to continue the project, so it was wrapped up.
I really hope it's a scam, because if not, and this is allowed to exist, we're fucked.
It works fantastically well for construction and military applications.