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Louis, Mo., Ameren provides energy services to more than 3 million customers in Missouri and Illinois. Approximately 93 percent of the 100-year-old company's $3.5 billion in revenue flows from electric sales. Other sales come from a natural gas business serving more than 500,000 customers and from our nonregulated businesses, including energy trading, generation development, fuels management and services and energy marketing. We offer excellent salaries and competitive benefits . ...See more