Patterson Power Engineers, LLC (PPE) is a consulting firm headquartered in Chattanooga, TN. The company is owned by Russell W. Patterson, P.E. and employs sixteen protection engineers. Our engineers have decades in power system protection, analysis and design with large utilities.Our focus is on power system protection and analysis. Our core competencies are in relay setting calculation for the protection of all types of power system apparatus as well as design. The bulk of our work is in transmission, substation, and generator protection.Our engineers are dedicated to being the best in our field.