By Tucson News Now Staff

Tucson Electric Power said it will stop using coal at its largest local power plant and will switch over to mainly natural gas.

TEP said the move is part of its plan to "diversify the resources it relies on to provide safe, reliable and affordable service."

The coal inventory at the H. Wilson Sundt Generating Station is expected to be depleted Aug. 13. Instead of coal, the multi-fuel unit will now rely primarily on natural gas, supplemented by renewable landfill gas and solar.