Energy Plaza, Office skyscraper in Dallas, Texas

Energy Plaza is a 49-story office tower in downtown Dallas, Texas, with a glass and steel exterior marked by geometric patterns. The building connects directly to the city's underground pedestrian network, which links much of the downtown core.

The tower was completed in 1983, during a period when Dallas was expanding its financial district with a series of new office buildings. That wave of construction reshaped the downtown skyline and established the area as one of the South's main business centers.

The tower opened in 1983 as the ARCO Tower, named for the Atlantic Richfield Company, which used it as its regional headquarters; the present name came later with the energy firms that followed as tenants. The building's base connects to the Dallas Pedestrian Network and the Bullington Truck Terminal, so its address at 1601 Bryan Street is also an indoor route through downtown.

Energy Plaza is a working office tower, not a public attraction, so there is no visitor access to the upper floors. Its practical value to pedestrians is the link to the Dallas Pedestrian Network and the Bullington Truck Terminal, which lets people cross part of downtown indoors. The tower stands at 1601 Bryan Street, north of Thanks-Giving Square.

The tower's design is based on three triangles, and its crowning communications mast is a scaled-down version of the Star Tower line made by Landmark Tower Company, which went bankrupt after its owner and chief design engineer died of a heart attack in 2002.