One of my major projects for the summer is making a building to overwinter my animals and support breeding. I've been working through plans, consulting with lots of people, working with our zoning office to create something legal, and trying to add a structure that supports my objectives for my little place.
I've finally settled on a final plan and construction is starting.
It's a 12 x 24 solar envelope with a 4' covered eve to the south. Two foot overhangs all the way around on the main roof. Vented eaves should provide adequate ventilation for both summer heat and winter fumes. I have salvaged double pane patio doors for windows on the east, south, and west sides that will be hinged to flip up in the summer. I'm going to keep the dirt floor for now but contemplating running a solar heated floor under the kidding pen. For lights, primarily for the hens to lay in the winter, I'm taking Matt's idea of small solar panels supplying LED lighting.
I've tossed around the idea of a cob building or straw bales. If I was building this for myself to live in I think I would do a combination of both. Since it's for animals it just needs to be well ventilated but not drafty. The worst thing for the animals is a stuffy damp building. So, I'm just going to rough frame it and probably sheet it in steel. The solar envelope idea should at least keep interior lighting to a minimum and allow cross breezes to air it out, along with some minor heating benefits and keeping everything dry. Also, the design was important to not block sunlight to my newly planted fruit, nut, and berry forest just to the north.
If need be, I can run a temporary extension cord from my main solar array to some heat lamps during kidding season.
A 500 gallon food tote will store rainwater for watering animals and the food forest to the north.
Hopefully I'll have some real updates and photos in the next couple of days.