AEE · CIK 1002910
What Ameren Corporation told the SEC could break it.
Ameren's sharpest exposure is its coal supply: about 96% of Ameren Missouri's coal comes from a single source, Wyoming's Powder River Basin, which has a limited number of suppliers, and deliveries — entirely rail-dependent — have been restricted at times by congestion, equipment, weather and supplier financial hardship, any of which can curb its coal-plant operation. That fuel concentration sits against tightening environmental rules — the Clean Air Act, the coal-combustion-residuals rule and Illinois' CEJA — that require costly compliance and force retirements, including a possible Venice Energy Center closure by end-2029 and its Illinois gas plants by 2040. As a regulated utility, its earnings ultimately hinge on recovering those costs and investments and earning allowed returns within frameworks set by the Missouri and Illinois commissions and FERC.
3 self-disclosed vulnerabilities, pulled from its own filings — each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Regulatory & policy
- environmental emissions rules (CAA, CCR, Illinois CEJA) forcing plant retirementsmedium
Tightening emissions limits (CAA, CCR rule, Illinois CEJA) require costly compliance and force retirements — possible Venice Energy Center closure by end-2029 and Illinois gas plants by 2040 — pressuring generation capacity and capex.
“Further reductions to emissions limits will become effective between 2030 and 2040, resulting in the possible closure of the Venice Energy Center by the end of 2029. The reductions could also limit the operations of Ameren Missouri's four other natural gas-fired energy centers located in the state of Illinois and will result in their closure by 2040.”
- utility rate regulation / allowed ROE (MoPSC, ICC, FERC)medium
Ameren's earnings depend on recovering costs/investments and earning allowed ROEs (e.g., 8.72% IL electric distribution, 10.48% FERC transmission) within frameworks set by MoPSC, ICC and FERC, while keeping rates affordable.
“our ability to control costs and make substantial investments in our businesses, including our ability to recover costs and investments, and to earn our allowed ROEs, within frameworks established by our regulators, while maintaining affordability of services for our customers;”
Supplier concentration
- Powder River Basin coal (single basin, limited suppliers, rail delivery)high
~96% of Ameren Missouri's coal comes from the Powder River Basin, which has a limited number of suppliers; deliveries (rail-dependent) have been restricted by congestion, equipment, weather and supplier hardship, which could limit coal-plant operation.
“Approximately 96% of Ameren Missouri's coal is purchased from the Powder River Basin in Wyoming, which has a limited number of suppliers. Deliveries from the Powder River Basin have occasionally been restricted because of rail congestion, staffing and equipment issues, infrastructure maintenance, derailments, weather, and supplier financial hardship.”
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