An argument I have frequently seen against EVs is that they still use the power grid to charge their batteries, thereby supposedly being as damaging to the environment as fuel-powered vehicles. However, the difference in efficiency between the two types of vehicles makes EVs a far more eco-friendly and less costly option in the long term, according to new data:
Where the Energy Goes: Electric Cars
Furthermore:
In comparison, EVs retain 65%-69% of the energy that goes into them, a figure that goes up to 87%-91% when regenerative braking is taken into account:
Electrifying transportation reduces emissions AND saves massive amounts of energy » Yale Climate Connections
In conclusion, even if an EV consumes the equivalent amount of power from a grid to what a fuel-powered vehicle consumes from a gas station, the former will retain and use significantly more of that amount than the latter. By current metrics, EVs are indeed better for the environment, especially in the long term.