Envision AESC was one of the industry's first EV battery producers. Now it's committing $2 billion to boost its U.S. market presence.

Mercedes has set the stage for the mass production of luxury electric vehicles in the U.S. And its massive Alabama plant will be key in taking the fight to EV kingpin Tesla.

Toyota's announced a $1.29 billion battery plant in Liberty, N.C., will have capacity for 1.2 million battery packs per year, suggesting more local investment will follow.