Stephan Wollenburg works at National Grid on strategy development for residential energy efficiency programs in Massachusetts. Before that, he worked as an independent consultant, at the Cape Light Compact and Mass Energy Consumer Alliance. Stephan received extra credit in a college class for attending his first BuildingEnergy, though he insists he attended because he was a true believer. Either way, he was hooked. Some find his love of numbers (especially spreadsheets!) somewhat off-putting, but tolerate it because he uses it for good. When not talking energy or crunching numbers, Stephan can be found running, gardening, or doting on his greyhounds.