Auto makers are thinking big with their plans for electric vehicles, focusing on sport-utility vehicles and pickup trucks to tap into consumers’ desire for larger rides.

A barrage of new plug-in hybrid and battery-electric SUV and truck models, including electrified versions of popular nameplates like the Jeep Wrangler and Ford F-150 pickup, are expected to hit U.S. dealerships in the next few years. General Motors Co. is even set to revive the Hummer nameplate—a onetime symbol of gas-guzzling excess—as an electric pickup...