Energy Plaza is a skyscraper in the City Center District of downtown Dallas, Texas, north of Thanks-Giving Square at 1601 Bryan Street. Designed by I.M. Pei and Partners, the building is 192 m (630 ft) and 49 stories, making it the ninth tallest building in Dallas. The building itself is based on a design using three triangles. The communications tower at the top of the building is modeled after the Eiffel Tower, Paris, which is actually a small version of the Star Tower broadcast tower line from Landmark Tower. Construction on the building began in May 1980 and the building opened in August 1983 for the Atlantic Richfield Company to be used as their regional headquarters. The structure's original name was the ARCO Tower. Oncor Electric Delivery and the Federal Deposit Insurance Corporation (FDIC), are the primary tenants. The building is connected to the Dallas Pedestrian Network and the Bullington Truck Terminal.