Hi Stephen!
I am thrilled to hear about any attempt to create a greener library, so kudos for moving the New Carlisle Library toward alternative energy.
I don't know enough to answer your question, but I'm going to point you to the libraries of Colorado who have been pursuing green-building efforts for awhile now.
from
Top Trends in Colorado Libraries:
"New public libraries are being constructed in Colorado and library leaders are going green. The Erie Library and Carbon Valley Library in Firestone which opened recently incorporate passive solar, innovative air flow and design features. The Durango Public Library will open soon with LEED certification. Nataurita Public Library is being built using straw bale construction and photovoltaic panels. And the Mancos Public Library is also building using green technology. In fact, Mancos staff member Victoria Peterson is starting a “green built” library in Second Life to educate others on green building techniques. Not only is this building a way to reduce expenditures long term, the library leaders are seeing this as an opportunity to inform the community and educate local builders on these technologies to encourage more green building."
You might try getting in touch with Victoria Peterson, who seems to be leading the green charge. Good luck and let us know what you learn.