Ameren

Ameren Corporation is a rate-regulated energy utility delivering electricity and natural gas to customers across Missouri and Illinois, headquartered in St. Louis. The company serves 2.4 million electric customers and 1 million natural gas customers, and employs approximately 9,000 people. Its business combines regulated infrastructure investment with a stated strategy of operational improvement.

Operating scope spans regulated power generation, electric transmission and natural gas distribution. Ameren owns and operates more than 9,300 megawatts of regulated generation capability and maintains 8,000 circuit miles of electric transmission lines. Technical work covers grid reliability and outage restoration, alongside energy efficiency and clean energy initiatives.

Energy efficiency programmes run since 2008 have saved customers $1.2 billion and eliminated 11.4 million tons of CO2 emissions, according to the company. Ameren describes its focus as reducing outages and restoring power faster for the communities it serves, and supporting economic development across the region.