Life Sciences

Science and discovery have always been part of Missouri's DNA and Ameren Missouri has been there to power this industry's growth all along the way.

Ameren Missouri Invests in Infrastructure to Power Pfizer Expansion

The Chesterfield R&D facility at 825 Chesterfield Parkway West develops manufacturing processes, dosage forms and analytics for clinical and commercial purposes in areas such as oncology, rare diseases, internal medicine, inflammation and immunology, and vaccines. Pfizer's R&D facility also works to develop innovative gene therapy manufacturing technologies and solutions. It features flexible lab layouts and open floor plans that Pfizer hopes will boost collaboration among its engineers, biologists, chemists and pharmacy specialists.

Pfizer’s commitment to the region means 450 employees, including 80 new employees working in STEM positions, get to make St. Louis their home.

Ameren offered full service support for the expansion project in partnership with St. Louis Economic Development Partnership and the state of Missouri and helped to facilitate innovative utility infrastructure solutions in accordance with unique project characteristics and the investment of new infrastructure in accordance with the design-build construction approach.

The new Chesterfield site, which Pfizer owns, was a consolidation of Pfizer’s locations at the Chesterfield Village Research Center and Missouri Research Park in St. Charles County. Pfizer previously leased space at the Chesterfield Village Research Center from Bayer.


  • Over 160,000 Missourians have scientific-related careers.
  • Washington University in St. Louis consistently ranks in the top 3 nationally for institutions that receive National Institutes of Health funding, bringing Missouri to the forefront of critical life science research.
  • Ameren Missouri offers low-cost, highly reliable energy. Our electric rates are 24% lower than the national average. To discover readily available sites powered by Ameren Missouri's affordable system, search our sites database.


Excellent Talent

  • More than 338,496 students are currently enrolled in four-year and two-year higher education programs. (Source: MO DHEWD)
  • Missouri higher education institutions produce more than 4,300 engineers annually. (Includes all undergraduate and post graduate degrees. Source: IPEDS, Alliance STL)

Missouri's new acclaimed training program, One Start, will help your company achieve its goals.


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Thermo Fisher Scientific

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