The SERC region lies within the Eastern Interconnection, occupying most of Southeast North America, serving all of the States of Missouri, Alabama, Tennessee, North Carolina, South Carolina, Georgia, Mississippi, and portions of Iowa, Illinois, Kentucky, Virginia, Oklahoma, Arkansas, Louisiana, Texas and Florida. SERC members include investor-owned, municipal, cooperative, state and federal systems, RTOs/ISOs, Merchant Electricity Generators, and power marketers.