The growth of electric vehicle (EV) adoption is inevitable as the transport sector moves away from petrol-based cars to achieve emission reduction targets and promote energy sustainability. Since EVs can make potentially large power demands, the increasing rate of adoption creates challenges for the grid in terms of overloading and congestion. This study explores a smart grid solution to these impending issues through Localized Demand Control (LDC). The effectiveness of LDC is simulated in various cases of end-user participation and EV penetration. Recommended LDC participation rates are established for each EV adoption rate to avoid grid congestion without compromising the end-user’s comfort. Based on simulations, the local grid can be fully resilient against congestion issues, even at 100% EV adoption, if there is at least 40% LDC participation rate.