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​Tree Trimming

The P.L.A.N.T. program (Power Lines and Nearby Trees program) is a comprehensive tree management program to help solve the problems of trees and branches interfering with high voltage overhead power lines.

The program is designed to cover the entire city of Calgary using qualified contractors for tree trimming.

ENMAX Power Corporation is required by law to maintain minimum safe clearances between trees and power lines.  Clearances are set out in the Alberta Electrical Utility Code and depend on the voltage of the power line.

Trimming specifications for the tree management program were developed in conjunction with Calgary Parks and Recreation.

For more information:

Call 403-514-3459


​ENMAX Power Corporation has more than 2,500 km of high voltage overhead power lines throughout Calgary.  These are the wires that stretch from pole-to-pole, along streets and alleys. 

Unfortunately, many existing trees have been planted too close to high voltage overhead power lines.  These trees must be trimmed on a regular basis to avoid power outages and protect public safety.

ENMAX Power Corporation strives to maintain continuous electrical service and public safety by striking a balance between nature's beauty and operational requirements.


Ensuring safety and reliability

Safety concerns

ENMAX Power Corporation is responsible for pruning trees along high voltage power lines because trees planted near power lines are a safety hazard. Trees become conductors of electricity when they contact an energized power line. For example, children climbing trees in contact with a power line run the risk of electric shock.

Another dangerous situation arises from power lines that have been dragged down by trees or branches during storms. These wires are often still energized and can injure or kill. Don't approach the downed lines. Call ENMAX Power Corporation's trouble response line immediately at 403-514-6100.

Property owners are responsible for trees that interfere with their own service line, which runs from the pole line to the house. If you have trees on your property that are in contact with the service line, we recommend that you call a trained arborist to trim your trees.

Customers are free to purchase natural gas services or electricity services from a retailer of their choice. For a list of retailers, visit ucahelps.alberta.ca or call 310-4822 (toll free in Alberta).