Historic New England’s approach to weatherization emphasizes preservation over intervention. But as shown by the energy retrofit that achieved an over 60% reduction in energy usage at the Lyman House, a National Historic Landmark, energy performance and preservation can co-exist. This session will discuss HNE’s preservation philosophy and how it guides the organization’s energy conservation projects. We will share an energy usage analysis of all 36 HNE properties and discuss how that information is used to prioritize actions.