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Tree Trimming

To enhance safety and reliability, Ameren Illinois works year-round to keep 70,000 miles of transmission and distribution lines clear of trees and other vegetation. We inspect every circuit at least once every four years, and trim as needed, as required by state regulations.

Feeding animals at local zoos

Ameren Illinois' tree trimming donation program provides nutritious and free treats for giraffes, camels, and more. 

Tree Trimming helps to increase reliability and prevent outages.

Fallen trees and branches are a primary cause of electric power outages. To minimize the likelihood of safety hazards and power outages, trees and vegetation must be kept clear of electric power lines. 

Trimming trees and managing right-of-way vegetation can prevent many - but not all - outages that are caused when trees adjoining Ameren’s easements fall onto power lines.

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Our Tree Trimming Crews

Ameren Illinois uses several private contractors to perform its line clearance tree trimming. Our contractors are nationally recognized as professional arboricultural companies who meet American National Standards Institute (ANSI) pruning standards and pruning methods endorsed by the International Society of Arborists (ISA). All crew foremen are certified line clearance tree trimmers, and all general foremen are arborists certified by the International Society of Arboriculture. All crew foremen with the tree trimming contractors working for Ameren Illinois have a valid company identification badge.

If you have questions regarding tree trimming, email ILVegetationManagement@Ameren.com

Vegetation Management

Why We Trim Trees

To minimize the likelihood of safety hazards and power outages, trees and vegetation must be kept clear of electric power lines.
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Tree Planting Tips

Get tips on how to safely plant new trees. 
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Wood Chips

Ameren customers can receive free wood chips made from tree trimmings. 
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