This is a topic that we have covered before but bears repeating. The best, most energy efficient, and cost effective solution to designing and building a building in SE Wisconsin is to go the pre-engineered route.
More evidence that highly efficient "sustainable" building solutions can make economic sense.
From an article published by the Area Development Online Research Desk (Q4 / Fall 2013)
This is a great article that focuses on some of the grass roots methods towards achieving Sustainable solutions in an existing or new building.