If they are in pots you can bring them in to extend the season. I have a greenhouse, and so was able to get a small amount of peppers all through the winter. But I've heard of people overwintering them in a sunny room in their house or even in basements or garages as long as you have some lights.
You just have to make sure they don't freeze and they have enough light and water to keep them alive. If so, then even if they don't produce during the winter, you can still get a few extra end of season peppers and then you start off the Spring season with a full grown plant.
All ready to go as soon as it gets warm enough!
