Tom Sturges hadn’t even thought of doing anything unconventional a year ago when he was preparing to break ground on a new headquarters for his family’s 107-year-old business. But the builder said he was looking at a new way that could really cut energy costs. The process led Sturges to being the first owner of a building made of accel-E “Steel Thermal Efficient Panels” (STEPs) created by a new company, Accelerated Building Technologies.