Ameren Illinois Company
AILLN
Other OTC78.45
USD
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Ameren Illinois Company
AILLN
(Other OTC)
Recent
price
78.45
P/E
ratio
- -
div
yld
- -
ROIC.AI
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in mil. unless spec.- Similar Companies
- Business
- Ameren Illinois Company (AILLN), a subsidiary of Ameren Corporation, operates as a rate-regulated utility providing electric transmission, electric distribution, and natural gas distribution services to approximately 1.2 million electric and 812,000 natural gas customers across central and southern Illinois, spanning 43,700 square miles including key areas such as the Springfield metropolitan region, Champaign-Urbana, Bloomington-Normal, Decatur, Metro East, and Carbondale; its core offerings encompass reliable electric generation infrastructure, high-voltage transmission lines at voltages including 345kV, 230kV, 161kV, 138kV, 69kV, and 34.5kV, electric distribution networks, natural gas delivery systems, energy efficiency programs with incentives for residential and business customers including LED lighting, smart thermostats, heating and cooling upgrades, air sealing, insulation, variable-speed drives, demand-controlled ventilation, and ductless heat pumps, as well as support for renewable energy integration through flexible interconnection services and distributed energy resources orchestration. Founded in 1902 as Central Illinois Public Service Company and renamed Ameren Illinois Company in October 2010, the company maintains headquarters at 10 Richard Mark Way in Collinsville, Illinois. Recent developments include Illinois Commerce Commission approval in 2025 for a $1.6 billion plan to construct 380 miles of new and upgraded 345-kV transmission lines and eight substations across 13 counties to enhance grid reliability and support lower supply costs, with construction starting later in 2025 and completion targeted for 2029; a proposed $145 million annual energy efficiency plan for 2026-2029 aiming for 1,122 GWh in electric savings through expanded residential and business incentives expected to save customers over $2 billion and align with Illinois' Climate and Equitable Jobs Act; natural gas rate adjustments approved in late 2025 resulting in an average $3.65 monthly bill increase for residential customers effective January 2026; ongoing multi-year electric distribution rate plan reconciliations and appeals filed in 2025; and corporate leadership realignments announced in October 2025 effective January 2026 to bolster operational performance under parent Ameren Corporation.