Linemen from mainland power up Puerto Rico

	Linemen overcome rugged terrain to restore power In remote mountain locations in Puerto Rico, workers from Florida, the Midwest and the Carolinas greeted by grateful people

	Duke Energy was prepared for January's winter blast When extreme temperatures broke energy-use records, Duke Energy met demand with few cold-weather related outages

	Retro photos: plenty of hard hats Can you help ID these old photos?

	First on the Ohio River for navigation and power Markland Hydro Station gets an upgrade, will generate more clean energy