It started with a goal to grow food for myself.
Growing food outside in the warm seasons was simple, but to grow enough food to eat year round would require more space than is available in the typical in town yard. This led to a Greenhouse as a way to extend the growing season.
Growing year round, from 100degF down to minus 10degF became a goal, but this came with all sorts of problems/solutions
The plants were either to hot or to cold. The Greenhouse needed air circulation.
The plants needed watering every day. The Greenhouse needed a water supply.
The plants got to cold in the winter. The Greenhouse needed a heat source.
The plants would bolt in the fall, winter. The Greenhouse needed Artificial lighting.
The greenhouse needed electricity to make it work year round.
either that or harvest and gather enough to preserve to make it through the winter.
I built a greenhouse that could grow enough greens to eat well, year round.