Linemen from mainland power up Puerto Rico

Linemen overcome rugged terrain to restore power

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

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

Retro photos: plenty of hard hats

Can you help ID these old photos?

First on the Ohio River for navigation and power

First on the Ohio River for navigation and power

Markland Hydro Station gets an upgrade, will generate more clean energy