The statement reads in its entirety: "NextEra loves natural gas. The company’s biggest subsidiary, Florida Power & Light, has spent billions of dollars converting old oil-fueled plants to run on natural gas, which now comprises over 70 percent of its fuel and purchased-power mix."

Gas is cheap and a Combined Cycle Gas Turbine (CCGT) plant is over 60% efficient.  If you're operating a for-profit utility that must provide reliable power 24x7 what's not to love?  In the real world economics trumps political posturing. 

Civil Beat and  Nathan Eagle have done a commendable job reporting on this issue.