Through direct dialogue between NCCoE staff and members of the energy sector (composed mainly of electric power companies and those who provide equipment and/or services to them) it became clear that energy companies need to create and maintain a high level of visibility into their operating environments to ensure the security of their operational resources (operational technology [OT]), including industrial control systems (ICS), buildings, and plant equipment. However, energy companies, as well as all other utilities with similar infrastructure and situational awareness challenges, also need insight into their corporate or information technology (IT) systems and physical access control systems (PACS). The convergence of data across these three often self-contained silos (OT, IT, and PACS) can better protect power generation, transmission, and distribution.