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Vegetation Management

Trees and safe, reliable energy service

Avista employs a professional, systematic approach to vegetation management in our maintenance of thousands of miles of electric and gas lines. Many of those lines, by necessity, cross private property and our customer’s yards. Our vegetation management program aims to protect our customers and their property, as well as our construction crews.

Trees cause many of the electric power outages on our overhead electric system. High winds during severe storms can uproot trees and send branches into power lines. Power outages, while inconvenient, also pose a threat to public safety. Downed wires can cause serious injuries and spark fires, and power outages can interrupt essential community services to hospitals, traffic signals and communications systems.

Please contact us:

  • If a house service line needs to be de-energized to trim or remove a tree by a commercial contractor hired by the property owner.
  • If a tree near a power line is visibly dead, diseased or dying.
  • If power lines are causing sparking or arching in tree branches.
  • If broken branches are entangled or hanging from power lines.
  • If you are logging or clearing trees near power lines.

Phone the Avista Contact Center at (800) 227-9187 and a field representative will be scheduled to do an inspection.

How You Can Help

  • Avoid planting trees directly under power lines or too close to electrical equipment. Plant the right tree in the right place
  • Select smaller, compact native or ornamental landscaping trees and shrubs.
  • Inspect trees on your property for insects, disease or structural problems.
  • Call a competent arborist for any tree work. They will know how to safely remove or trim trees around houses, fences or gardens without damaging property. The will also know when to call the energy provider to assist them with trees around wires. Make sure the arborist is licensed, bonded and insured.
  • Plant the right tree for the right place. Avista's Vegetation Management is partnering with the Spokane County Conservation District (SCCD) in an effort to reduce the cooling demand in homes and increase the urban tree canopy with a Shade Tree Program. For more information, visit the SCCD website at

The links below contain information most customers look for when contacting Avista about our Vegetation Management. 

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