AmerenEnergy to implement new system for its complex electricity rate billing system

PEABODY, Mass., Aug. 15, 2001 — AmerenEnergy, the trading subsidiary of Ameren Corporation, today announced it will implement LODESTAR Corporation’s BillingExpertâ„- to manage the company’s increasingly complex electricity rate billing system for its industrial and wholesale customers.

“BillingExpert provides AmerenEnergy with a one-stop solution because it is able to manage our clients from the initial processing phase to the final customer care stage,” said Brian Rettenmaier, controller of AmerenEnergy, which is based in St. Louis, Missouri.

LODESTAR’s BillingExpert, provides a flexible, scalable and adaptable architecture specifically geared to streamline control for its customers, resulting in significant time and cost savings. BillingExpert, part of the LODESTAR® Customer Choice Suiteâ„-, works seamlessly with a company’s software, allowing users to easily create and build new programs onto their existing applications.

“BillingExpert is fast becoming the industry-standard answer to deregulated energy market billing challenges,” said Chris Hamilos, chairman and CEO of LODESTAR. “As part of the LODESTAR Customer Choice Suite, BillingExpert allows companies to track information from the front end to back end with detailed accuracy.”

About AmerenEnergy

AmerenEnergy is the independent, national trading and marketing subsidiary of Ameren Corporation, a $10 billion asset company that provides energy services to 1.5 million electric customers and 300,000 natural gas customers in a 44,500-square-mile area of Missouri and Illinois.


LODESTAR provides e-Business software solutions to enable customer choice in the new energy economy. With more than 100 clients in North America, LODESTAR is a well-known and reliable provider of world-class software solutions. Energy providers use LODESTAR software for pricing, billing, load profiling and settlement, financial management and transaction management. The LODESTAR® Customer Choice Suiteâ„- (CCSâ„-) provides the world’s most complete, flexible, scalable and reliable Web-based software to competitive retail companies, regulated distribution companies, independent system operators, and transmission and generation companies. LODESTAR customers include Shell Energy, the Electric Reliability Council of Texas (ERCOT), TXU, Allegheny Power, BC Hydro and Duke Power.

LODESTAR Corporation’s headquarters is at Two Corporation Way in Peabody, MA, 01960 USA. For more information, visit or call (888) 225-1293.

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