Updated analysis examines economic impact and the role of infrastructure improvements and economic development in supporting regional growth

Key Takeaways:

According to a new study, Ameren's economic activity supported approximately 63,000 jobs and generated $25.9 billion in economic output across Missouri and Illinois in 2025.
Ameren spent $2.5 billion with in-state vendors and generated approximately $1 billion in state and local tax payments.
The study highlights the role energy infrastructure improvements will play in supporting economic growth and reliability across the region.

ST. LOUIS, Sept. 22, 2026 /PRNewswire/ -- Ameren Corporation's (NYSE:AEE) operations, infrastructure improvements and economic development efforts continue to support jobs, investment and local communities across Missouri and Illinois, according to a new study conducted by HR&A Advisors, an economic development advisory firm. The study also highlights the important role reliable energy infrastructure plays in attracting investment, supporting business expansion and preparing communities for future growth.

The study examines Ameren Missouri, Ameren Illinois and Ameren Transmission, and provides a look back at the company's economic impacts during 2025.

Powering the Regional Economy in the Communities We Serve

Economic Impact
- 63,000 jobs supported
- $25.9 billion economic output
Community Investment
- $2.5 billion spent with in-state suppliers
- $1 billion in state and local taxes
- $11.2 million in philanthropic giving
Economic Development
- More than 430 companies supported to ensure energy needs are met
- $3.6 billion in planned investment by companies Ameren engaged
- More than 3,700 projected jobs from companies Ameren engaged

"These findings make clear that Ameren Missouri is more than an energy provider. We are a catalyst for economic growth across the communities we serve," said Aaron Melda, chairman and president of Ameren Missouri. "Our investments in critical infrastructure strengthen local economies, create opportunity for businesses and families, and help attract the industries that will power Missouri's future. By delivering the reliable energy our region depends on, we are helping build lasting prosperity for generations to come."

"The results of this study demonstrate that energy infrastructure is much more than poles, pipes and wires. It helps create the conditions for jobs, business investment and thriving communities," said Patrick Smith, chairman and president of Ameren Illinois. "As companies look for places to invest and grow, reliable and affordable energy gives communities a competitive advantage. The study's findings show how strong infrastructure helps position Illinois communities to attract employers, support job creation and achieve long-term economic success."

The study also highlights the important role energy infrastructure will play in supporting future economic development and growing energy demand across the region. Continued improvements to the electric grid and natural gas system will help support reliability and meet customers' growing energy needs in the years ahead.

For more information and to view the complete study, visit Ameren.com/Economic-Development.

About Ameren Corporation

St. Louis-based Ameren Corporation powers the quality of life for 2.5 million electric customers and more than 900,000 natural gas customers in a 67,700-square-mile area through its Ameren Missouri and Ameren Illinois rate-regulated utility subsidiaries. Ameren Illinois provides electric transmission and distribution service and natural gas distribution service. Ameren Missouri provides electric generation, transmission and distribution services, as well as natural gas distribution service. Ameren Transmission Company of Illinois develops, owns and operates rate-regulated regional electric transmission projects in the Midcontinent Independent System Operator, Inc. For more information, visit Ameren.com, or follow us at @AmerenCorp, Facebook.com/AmerenCorp, or LinkedIn.com/company/Ameren.

View original content to download multimedia:https://www.prnewswire.com/news-releases/more-jobs-and-new-investment-coming-to-missouri-and-illinois-new-study-finds-302886206.html

SOURCE Ameren Corporation