By the 1920s it became clear that electricity was the dominant form of energy. Merging into Consolidated Edison, the company thought a new expansion was in order. The firm of Warren & Wetmore (Grand Central) was hired to design a new tower that would serve as a beacon of light. Much of the design was decided to match Hardenbergh’s original base; however, the tower’s base would also include a three-story Doric colonnade before rising up 21 stories to a modest cornice.