Alliant previously said the Edgewater plant could convert to natural gas in 2028. Now, the utility company says it will ...

Energy regulators in Arizona have given the go-ahead to convert several units at two coal-fired power plants in the state to burn natural gas.

The Arizona Corporation Commission voted unanimously during its March 4 meeting to approve the conversion of coal-fired units at the Springerville Generating Station and the Coronado Generating Statio ...