CHARLOTTE, N.C. — Uptown Charlotte's skyline is about to see a big change. 

Duke Energy is set to begin a three-year construction of a new 40-story tower that will sit next to its current headquarters on South Tryon Street in uptown. 

The new tower will hold up to 4,000 Duke Energy employees and contractors and is expected to open in 2022. According to Duke Energy, the developer Childress Klein filed for preliminary permits with the City of Charlotte and Mecklenburg County to start construction. 

The 1 million square-foot tower will have 25,000 square feet of retail space and a seven-level above-ground parking deck. Duke estimates that approximately 1,000 workers will be employed during the three-year construction.