Interesting tidbit from Ark Encounters FAQ:

Are you doing any non-conventional green building?

Yes. The Troyer Group in Mishawaka, Indiana heads our construction management team. It has one of the largest LEED certified (Leaders in Energy and Environmental Design) staffs in the Midwest. We intend to integrate solar panels along with passive solar, geothermal, water, and wind technologies into our mechanical systems, as well as some other innovative and sustainable technologies to maintain good stewardship during construction and for long-term operations.

We plan to use as many local companies and locally manufactured products as possible in order to maximize efficiency while also enhancing the local economy.