Energy Center I, Houston, TX Energy Center I is a 332,300 square foot, 13 story, Class A office building with an eight level parking garage Located in the Katy/I-10 Houston office submarket known as the Energy Corridor. Currently under construction with a first quarter 2008 delivery Sister building to Energy Center II Attractive architectural pre-cast panel and glass curtain wall. Energy Center I is the first phase of a two-building project and has been entirely pre leased before construction completion. Based upon the success of this first phase and the strong tenant demand in the Energy Corridor, Energy Center II is now underway.