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Customer Service
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Phone and Fax Numbers
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Residential
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Business
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AmerenCILCO
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888.672.5252
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877.677.5740
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Fax Number
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309.677.5025
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877.263.7369
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AmerenCIPS
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888.789.2477
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800.232.2477
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Fax Number
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877.226.3736
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877.263.7369
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AmerenIP
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800.755.5000
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800.363.6805
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Fax Number
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217.424.8345
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217.424.8345
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AmerenUE
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St. Louis area
314.342.1111
All others
800.552.7583
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St. Louis area
314.342.1111
All others
800.552.7583
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Fax Number
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314.206.0485
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314.206.0485
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Construction Services
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UE Construction
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866.992.6619 or constructionhotline@ameren.com
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Fax: 314.641.2406
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Web: UE Construction
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Ameren IL Utilities
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Residential Construction
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Commercial & Industrial Construction
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Other Frequently Called Numbers
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Call Before You Dig!
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Illinois or Missouri
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811
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Economic Development
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800.981.9409
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Investor Services
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St. Louis area
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314.554.3502
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All others
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800.255.2237
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Power Quality Hotline
(AmerenUE)
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800.899.5973
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Relay Service for the Hearing Impaired
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Hearing impaired customers can use the Relay Service of 711 to conduct business with Ameren. More information on the Illinois and Missouri Relay Services is available online:
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Illinois Relay
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Missouri Relay
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Other Contact Information
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eMail
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To report an outage, call us!
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Power Out? Call Us
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Mailing Addresses for Payments
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Ameren Residential Customers
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Ameren Business Customers
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Gift Certificates
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Ameren gift certificates are the perfect gift when you want to give the gift of “energy.” More.
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Web Site Contact
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If you have comments or suggestions relating to this Web site, contact the ameren.com Webmaster.
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