Ameren earns national recognition for helping attract investment and jobs across two-state region

Company named among nation's top utilities for economic development

Key Takeaways:

• Site Selection Magazine named Ameren Corporation among the Top Utilities in Economic Development for 2026.
• Ameren-supported projects helped create more than 3,700 jobs and generate $3.6 billion in capital investment across Missouri and Illinois in 2025.
• The recognition highlights Ameren's work with businesses, communities and economic development partners to support regional growth.

ST. LOUIS (Sept. 2, 2026) - Ameren Corporation has been named among Site Selection Magazine's Top Utilities in Economic Development for 2026, recognizing the company's role in helping attract business investment and create jobs across Missouri and Illinois throughout 2025.

The recognition reflects Ameren's ongoing partnership with businesses, site selectors and community leaders to support investment and job growth throughout its two-state service territory. Last year, Ameren-supported economic development projects generated $3.6 billion in capital investment and created more than 3,700 jobs across Missouri and Illinois.

"Missouri is gaining momentum as a place where businesses can invest, grow and thrive, and we're a dedicated partner to help support that progress," said Tara Oglesby, vice president of energy solutions and business development for Ameren Missouri. "By working closely with communities, economic development partners and business leaders, we're helping attract new investment, support job creation and strengthen long-term economic growth across the state."

"Reliable energy remains a critical factor when businesses consider where to locate or expand," said Eric Whitfield, director of economic development for Ameren Illinois. "Strong partnerships help communities compete for new investment and support long-term economic growth."

In Missouri, businesses across Ameren's service territory created 2,270 new jobs and invested $1.6 billion, including:

• IKO, a global leader in the manufacturing and supply of residential shingles, commercial roofing and waterproofing products, expanded in Bismarck by investing more than $120 million in a new 220,000-square-foot facility with plans to create more than 50 new jobs for its subsidiary, Bismarck Granules.

In Illinois, businesses across Ameren's service territory created more than 1,450 new jobs and invested $2 billion, including:

• Manner Polymers, a Texas-based producer of custom PVC material for the agriculture, appliance and automotive sectors, expanded in Mount Vernon, Illinois, by investing $54 million in a new 100,000-square-foot facility with plans to create 60 high-wage jobs.

The full list of Top Utilities in Economic Development appears in the September 2026 issue of Site Selection Magazine and online at https://siteselection.com/2026-top-utilities-feeling-the-surge/.

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 64,000-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.

Contact: Ameren Communications
314.554.2182 (Missouri media)
217.778.3726 (Illinois media)