Schweitzer Engineering Laboratories (SEL), located in Pullman, is ranked as the 13th largest employee-owned company in the United States, according to the National Center for Employee Ownership’s annual list of the 100 largest employee-owned companies. The company has shown consistent growth in this ranking, moving up from 22nd place in 2022. SEL transitioned to 100% employee ownership in 2009 and currently has over 7,400 employee owners worldwide. The National Center for Employee Ownership (NCEO) is a nonprofit organization focused on promoting employee ownership. SEL specializes in developing products and solutions for the protection and control of electric power systems.