Edison International is the holding company of Southern California Edison Company (SCE). As of December 31, 2016, SCE, a public utility, was primarily engaged in the business of supplying and delivering electricity to an approximately 50,000 square mile area of southern California. The Company is also the parent company of Edison Energy Group, Inc. (Edison Energy Group), a holding company for subsidiaries engaged in pursuing competitive business opportunities across energy services and distributed solar to commercial and industrial customers. SCE's projects include West of Devers, Mesa Substation, Alberhill System, Riverside Transmission Reliability, Eldorado-Lugo-Mohave Upgrade, Tehachapi and Coolwater-Lugo. As of December 31, 2016, the West of Devers Project consisted of upgrading and reconfiguring approximately 48 miles of existing 220 kilovolt (kV) transmission lines between the Devers, El Casco, Vista and San Bernardino substations.