The ESG ranking measures a company's exposure to long-term environmental, social, and governance risks. These risks -- involving issues such as energy efficiency, worker safety, and board independence -- have financial implications.
The financial rating is generated by analyzing the market behavior of major stocks and compares them on a common scale of performance.
Ameren Corporation is an American power company created December 31, 1997, by the merger of St. Louis, Missouri's Union Electric Company (formerly NYSE: UEP) and the neighboring Central Illinois Public Service Company (CIPSCO Inc. holding, formerly NYSE: CIP) of Springfield, Illinois. It is now a holding company for several power companies and energy companies.