I am hoping for some feedback. I want to build a private preschool for children in our Tug Hill/Black River Valley, NY region within the next 3 years that focuses on outdoor/environmental education. This is a new brainstorm for me and everyday, it gets clearer and clearer. This morning I was thinking that a Treehouse theme would be great. We have a 200 acre farm with woods that would make a great exploratory classroom! I would like to make the actual indoor classroom as energy efficient and natural as possible. I have no experience with solar energy and it is not popular here in Northern NY. I am hoping that you with experience would be able to give me some resources or feedback on construction of a 20x40' one level building? Please contact me directly at gnksull@gisco.net. Thanks!