Plug-in hybrid electric vehicles (PHEVs) have the potential to curb emission and reduce the cost of transportation. Another unique advantage of PHEVs is their capability to integrate the onboard energy storage units with the power grid which can improve the efficiency and increase the reliability of the power grid. These concepts are still new and under development. Unlike Hybrid Electric vehicles (HEVs) a major concern in the case of PHEVs is the impact on the grid when they are plugged in for charging to the already loaded grid. In view of this, this paper presents the trends in analysis, design and evaluation of PHEVs in the future smart grid environment.