Jeff Plungis:

California’s mandatory sales targets for electric and hydrogen-powered cars will go from less than 1 percent today to more than 15 percent by 2025. The targets, the result of legislation passed in 2003, are a means of cutting greenhouse gas emissions to 80 percent below 1990 levels by 2050.
 
 The same targets will go into effect in nine other states that have chosen to adopt California’s emissions-reduction standards rather than follow laxer federal rules: Connecticut, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, Rhode Island, and Vermont.
 
 “Electrification is a needed part of the solution,” says Matt Solomon, transportation director of Northeast States for Coordinated Air Use Management, a nonprofit consortium representing the air quality agencies of eight states.