Edison International is the holding company for Southern California Edison Company (SCE), a California public utility corporation; Edison Mission Energy (EME), an independent power producer, and Edison Capital, an infrastructure finance company. it operates in two segments: an electric utility operation segment (SCE) and a competitive power generation segment (EMG). SCE is engaged in the business of supplying electricity to an approximately 50,000-square-mile area of southern California. EMG is the holding company for its principal wholly owned subsidiary, EME. EME is a holding company with subsidiaries and affiliates engaged in the business of developing, acquiring, owning or leasing, operating and selling energy and capacity from independent power production facilities. EME also engages in hedging and energy trading activities in competitive power markets through its Edison Mission Marketing & Trading, Inc. (EMMT) subsidiary.