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\n Power lines lead into the coal-fired Intermountain Power Plant outside Delta, Utah. The plant, which is getting new turbines that can burn natural gas and hydrogen, is at the center of an ambitious project to cut greenhouse gas emissions.
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<\/p>\n George Frey\/Getty Images<\/p>\n <\/span>\n<\/div>\n<\/p><\/div>\n A couple hours south of Salt Lake City, the open desert is a hive of activity. Hundreds of workers push gravel and pull cables around low-slung green buildings. Beyond a guard shack, a stream of pickup trucks buzz along a two-lane highway that fades into sagebrush.<\/p>\n The workers spill into Delta, a nearby town of about 3,700. Motels and trailer parks are full. And at dinnertime, there\u2019s a line inside El Jalisciense, a taco shop on Main Street. \u201cIf you watch the overpass, people coming into town at five and six in the evening, it’s just nonstop,\u201d says John Niles, Delta\u2019s mayor.<\/p>\n