Public utility such as power, oil & gas, water and transportation have many challenges in today’s environment. Ensuring the physical safety and security of this infrastructure and its users has increased the need for more effective monitoring and control. Besides, deregulation of many traditional utilities has resulted in a competitiv imperative to better understand and optimally utilize resources such as energy. Deregulation has meant maximizing operational efficiency and improving service responsiveness. Finally increased acquisitions along with emergence of multi-service utilities call for the automation and integration of large scale diverse assets. All these challenges require SCADA systems for the utmost in flexibility, scalability, openness and reliability.