Customer Support

Residential

  Phone: 800.755.5000
  Fax: 800.851.1796
  Hours: 7:00 a.m. - 7:00 p.m. M-F

Business

  Phone: 800.232.2477 
  Fax: 877.263.7369
  Hours: 7:00 a.m. - 7:00 p.m. M-F

Construction & Engineering

  Phone: 888.659.4540
  Fax: 217.424.6758
  Hours: 7:30 a.m. - 4:30 p.m. M-F

Property Management

  Phone: 800.487.5795  
  Fax: 800.851.1796  
  Hours: 8:00 a.m. - 5:00 p.m. M-F  
  

Website Support

  Phone: 877.263.7361  
  Fax: 800.851.1796  
  Hours: 7:00 a.m. - 7:00 p.m. M-F  

Other Services

  JULIE/Call before you dig! Phone: 811  
  Hearing Impaired Phone: 711

Payment

Correspondence

  Ameren Illinois
  300 Liberty St.
  Peoria, IL 61602