The SCADA (Supervisory Control and Data Acquisition) systems are collecting data from various sensors nodes deployed in remote locations of field and then transmitted to a central controller which then manages and control this data. Wireless communication for SCADA is required to applications where wired communications to the remote site is too expensive or it is too time consuming to construct wired communications. Utilization of wired or line communications become impractical as the scope is increasing widening. This paper discusses the role of wireless communication for SCADA systems.