Ameren Corporation has 2.3 million electric and 900,000 natural gas customers, making it the leading utility company in the St. Louis area and the second-largest in the entire state of Illinois. Created by a merger in 1997 and growing through further mergers, the company needed expert help to convert and migrate vast quantities of legacy data in order to maintain smooth operations.


  • Convert and migrate large volumes of legacy data in one year
  • Create a standardized, reusable platform for data integration
  • Provide a single view of commercial, industrial, and residential customer information
PowerCenter was vital in enabling Accenture to minimize cost and risk for Ameren, and bring this challenging project in under budget and within our allotted 11-month timeframe.
— Eric Middleton
Senior Manager


30% Reduced

data migration costs


  • Established repeatable, automated processes for future data migrations
  • Significantly improved data integrity, reliability, and quality
  • Improved customer service, marketing, and field operations

Technologies Used

  • Accesses, integrates, and delivers any and all data quickly and cost-effectively, without hand coding.