Alternative Energy Construction uses modern building technics. State of the art insulated concrete walls panels produce R-values in excess of R-49 , and our structures are structually engineered to withstand tornadic forces of up to 235m.p.h.and beyond .A building created with our walls can last 10 times longer that a wooden structure."We are building like most will build 100 years from now , not like most built 100 years ago."Mike Kirkpatrick , Alternative Energy Construction