Tree pruning is a critical part of our responsibility to deliver safe and reliable electric service. We have developed an effective tree maintenance program to meet state and federal regulations for minimum clearances between trees and power lines. The work our licensed, professional foresters and contract tree-pruning experts do is for public safety and reliability.
We appreciate the beauty and environmental impact trees provide all of us. However, it is vital that we protect the electrical system from hazardous limbs and trees that threaten our equipment. We are required by law to maintain minimum clearances.
Our improved, proactive tree maintenance program has hardened our electrical system and reduced the number of outages during storms.
The tree pruning we perform adheres to the standards and practices outlined by the American National Standards Institute (ANSI). This standard for line clearance is followed by nearly all electric utilities in the United States.
Learn more in our Vegetation Management fact sheet. You can also visit our
Frequently Asked Questions page to learn more about tree pruning.