As utilities prepare for the steady progression of the electrification of transportation, they must continue to learn: Learn the basics of EV design, learn how they charge and how that all integrates with the grid as well as what needs to be in place. Not only is it infrastructure, but also systems and services. All of that gets complicated, but by 2025, it’s expected that EVs will constitute 11% of total passenger vehicles, while by 2040 that number may reach 55% (Transportation Electrification: A Guide to Planning, Deployment, and Operations for Utilities).
But let's start with the basics of EVs and how they work to lay that foundation. Here is a handy primer from the Department of Energy on how different types of vehicles work: all-electric, hybrid, etc. The shift to electrification will happen exactly like that -- as a slow, steady shift.