Fuel Savings estimates on www.fueleconomy.gov, car window stickers, and other sources base their comparisons off of fuel costs of the average new vehicle, and do not consider local prices of gas or electricity.
Even if an EV is a net positive for carbon emissions as compared to an equivalent gas vehicle, will it actually result in fuel savings for you, based on your driving style, city/highway mixture of driving, and how long you intend to keep the vehicle? This calculator lets you determine this.