Yes Kassaundra, I am basically looking at "seasonal". Even then my layers have to get thru the winter months and not be so stressed that it takes them a great deal to start up their egg production again. I am trying to make sure my new coop is designed with all their needs firmly in place, for the conditions we deal with. I've been watching our skies far more than normal this winter, though winter is far from normal this year! I want to pay attention to whether we have cloudy skies or clearer skies in winter. Clearer skies would work nice for creating double pane/window systems with "Solar" heat added via some low tech solar panels. I am thinking of placing shutter doors on the solar panels so that I can control heat production in summer months.
My understanding is its not the cold but light that determines poultry production. So, my thought is regarding how I can produce some extra light for my hens, without adding to my electric bill.

I've considered solar lighting, but even that would have some down sides since they never shut off at night and I want my birds to sleep sometime! But if nothing else I may have solar lights that get carried out into a bucket each day to recharge and into the hen house as afternoon/evening (3pm) feeding takes place. Then later I take the bucket out again closer to 8pm. This wouldn't produce as much light as say 100 watt lights, but I feel for the hens being cooped up in a shed that gets dark by 4:30pm every day during winter months! Heck I suffer from the lack of light!!!

so I sympathize with my birds.