U.S. coal plant use is dropping, but utilities are delaying their retirement and running them — even when they cost more than renewable sources.

Georgia energy regulators approved a plan to transition the state's largest electric utility away from coal towards solar power.

Texas allows companies to sell electricity at wholesale prices. When the price of electricity skyrocketed last week, that meant exorbitant bills for many residents who had been trying to save money.

Residents in some Georgia neighborhoods are just starting to learn about the high concentrations of airborne toxins they breathe. Delve into an...