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Emerald Ash Borer

Emerald Ash Borer

How we manage unhealthy trees in transmission rights of way

Dead and dying ash trees are becoming a widespread problem in the Midwest because of a little green bug. The emerald ash borer (EAB), a wood-boring beetle native to Asia, was first detected in Michigan in 2002 and has killed hundreds of millions of ash trees throughout the country. The beetle is about one-half inch long and metallic green. Its larvae tunnel through the wood just under the bark of ash trees and can kill even healthy trees within one to four years.

Providing safe, secure and reliable energy to all our customers is at the heart of what we do. Trees that grow too close or are in danger of falling onto power lines must be pruned or cut down to help prevent outages or service interruptions. That’s why we developed the Emerald Ash Borer Program in our Midwest service territory – a proactive approach to reducing the risk of trees falling onto power lines and our facilities. Our methods are based on widely accepted standards established by the American National Standards Institute for tree care maintenance and operations.

Signs of EAB infestation: 

  • Dead tree branches near the top of a tree
  • Bark splitting
  • Zigzag tunnels under the bark
  • D-shaped exit holes
  • Extensive woodpecker activity
  • Leafy shoots sprouting from the trunk

Emerald Ash Borer

Frequently Asked Questions