Alliant Energy is the entity taking care of issues with street lights for most of Marengo. 

If you notice an issue with a street light around Marengo, Alliant provides a convenient way for citizens to report street light issues. To see their repair request form or report an issue, click here. 
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When reporting an issue, be as specific as possible when giving the location. Specific street addresses provide the best information. For example, instead of saying, "streetlight in front of police department," say "streetlight on northwest corner in front of police department at 153 E. Main Street." Making the location more specific will help make the process quicker and easier for Alliant to respond.