Accelerated Building Technologies has developed the accel-E™ Steel Thermal Efficient Panel (S.T.E.P.) wall system to streamline the construction process and improve thermal performance.The accel-E® Steel Thermal Efficient Panel (S.T.E.P.) wall system combines the strength of cold-formed steel framing with the insulation properties of expanded polystyrene (EPS). The result… a thermally resistant, high performance building system that’s strong, light in weight and energy efficient. The accel-E® STEP wall system offers a host of advantages over conventional building techniques including energy efficiency, faster installation time, labor savings, and more.