Dennis Buchanan, PE, is a Plant Director for Southwestern Public Service Company (SPS). SPS is one of 4 operating companies of Xcel Energy. Dennis has worked in the Electric Utility, Power Generation field for over 35 years. His background includes performance and plant engineering, project management, and senior management. A large portion of his career was dedicated to power plant process controls where he designed and implemented DCS retrofits throughout the SPS fleet. Currently, Dennis is the Plant Director of the Harrington/Nichols complex that consists of 3 coal fired units and 3 gas fired units. Dennis has a B.S. degree in Mechanical Engineering from Texas Tech University and is a Professional Engineer in the State of Texas.