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 ...

TransAlta Corp. announced it has completed its transition away from coal-based energy generation to natural-gas in Canada, Alberta. Electric shovel and haul truck conducting prestrip operations at the ...

The Public Utilities Regulatory Authority is ending a program that provided incentives to consumers to connect their homes and businesses to natural gas after the initiative fell short of its goals.