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Mass integration of Electric Vehicles (EVs) will lead to transmission line congestion, transformer overload, necessary power plant construction, and power quality problems on the electric grid. In this work, Multi-port Power Electronics Interface (MPEI) is proposed as a solution. It is shown that MPEI, especially coupled with some distributed generation source(s), can perform the required functions to eliminate the harsh effects of mass EV market penetration. An MPEI is built to perform these functions in conjunction with a fleet of electrified golf carts. The reduction in CO2 emissions, reduction in cost of energy, reduced impact to the electric grid, and battery management systems will be discussed in the context of this application and as a solution to EV integration.