greenhouse growing during winter?

alright so im thinking about building a greenhouse pretty much from scratch, and i was wondering how would i be able to control the temperature better for when it becomes winter, so i can still throw out some plants?

can anyone help me with this? i want to know if it would even be worth it to build a greenhouse now

It depends on how mild your winters are..You would have to set up some sort of lighting so they stay wake at night

well the beggining of winter isnt horrible but it still might get a bit too cold for them (im not sure though). and im not worried about light schedule cuz i was just gonna veg them inside for a while then put them out in it