My location is North Texas, and I do have a greenhouse with some artificial light available in it. so I think I will put a rat cage around the succulents (why last winter's came in the house to die), and hang a light fairly low over the succulents on the south facing greenhouse shelf. If we have a real bad winter I'll have to pull them away from the windows to keep from freezing, but usually it does ok. I had to go to a solid roof after 2 hail storms, so there is no vertical sunlight.
That or I can bring them in like I did this summer and maybe lower the light. once I finish the bathroom redecorate and put my tropicals back in the bathroom, the light can go down and the succulents will be happier.
