Ameren

Ameren Corporation is a gas and electric utility based out of St. Louis, MO, servicing most of central and southern Illinois and much of northern and eastern Missouri. Ameren has approximately 2.4 million electric customers and more than 900,000 methane gas customers.

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Utilities and fossil fuel industry support proposed Trump administration air pollution rollbacks

Utilities, fossil fuel companies, and aligned groups filed public comments last month supporting a pair of Trump administration proposals to repeal EPA limits on harmful emissions of air pollution and greenhouse gases from power plants.   One of the Trump administration’s proposals would reverse a Biden-era EPA rule that strengthened Mercury and Air Toxics Standards (MATS),...
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Ameren justifies new gas plant with law that it lobbied for

Ameren Missouri is citing a new law that it backed to justify building a methane gas plant that could increase costs for residential customers.  The St. Louis–based monopoly utility invoked Senate Bill 4 (SB 4), the omnibus energy bill passed in April 2025, multiple times in testimony with the Missouri Public Service Commission (MPSC). The...

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