Way back before NRG was making electric DeLoreans and building solar power plants, it co-owned a slew of power facilities in California with Dynegy -- an energy outfit that got caught up in a long-term litigation over some old energy contracts with the state. Long story short, that legal dispute became NRG's problem in 2006, after it acquired Dynegy's majority stake in the partnership -- a problem it's finally resolving by peppering California with 200 fast-charging EV stations.