However, just to through a wrench in the refrigerator, because photosynthisis stops does not mean the plant is in "suspended animation" it is still alive and surviving on stored carbohydrates which it is unable to replace due to the cold and lack of light, while the plant being wintered outside or under lights can replace a certain amount of its reserves over its dormancy but will also use more energy due to the warmer avarage temps. I would suspect that the two methods ( given excellent care otherwise) will prove to be a "6 of one and a half dozen of the other" situation. My two cents worth.;)