![Mulan wind farm [CREDIT: Global Climate Budget 2018]](https://images.hgmsites.net/tmb/mulan-wind-farm-credit-global-climate-budget-2018_100682097_t.gif)
For electric-car drivers looking to emit less pollution as the drive, 2019 could be a banner year. The U.S. electric grid has been getting gradually greener as utilities replace coal fired powerplants with primarily wind and natural gas. That trend is due to reach a tipping point in 2019, according to numbers by the Energy Information Agency at...