The document discusses three challenges to engaging building users in energy reduction through behavior change: 1) The invisibility of energy, 2) Determining which users' behaviors to target, and 3) The difficulty of public engagement in workplace settings. It notes that technical improvements alone are not enough and that behavior change is needed from various stakeholders, including facilities managers and energy managers. The document advocates using creative visualization tools and a combined top-down and bottom-up approach to public engagement to help minimize mixed messages and maximize energy reductions.