Edmund O. Schweitzer III (born 1947, Evanston, Illinois) is an electrical engineer, inventor, and founder of Schweitzer Engineering Laboratories (SEL). Schweitzer launched SEL in 1982 in Pullman, Washington. Today, SEL manufacturers a wide variety of products that protect the electric power grid and industrial control systems at its three state-of-the-art U.S. manufacturing facilities in Pullman, Washington; Lewiston, Idaho; and, Lake Zurich, Illinois. SEL products and technologies are used in virtually every substation in North America and are in operation in 164 countries.