Tree Near a Power Line: Who to Call and Who Pays

A tree growing into a power line is the one tree problem where hiring the wrong person can kill someone. It is also one of the few where the work may be done for free by someone who is already obligated to do it - if you call the right number.

So the order of operations matters: identify the wire, then call.

First, the rule that matters most

Stay at least 10 feet away from any overhead conductor, and assume every wire is live.

Electricity does not need contact to be lethal. At distribution voltages it can arc across a gap, and a wet branch, an aluminum ladder, or a pole saw with a fiberglass handle that is damp is a conductor. Every year people are killed trimming their own trees near service drops, and the common factor is almost always that they believed the wire was something else.

Never trim a branch within 10 feet of a wire yourself. Not with a pole saw, not from a ladder, not "just the tip."

Which wire is it

Look up and sort the wires from top to bottom. This determines who you call.

The top wires, on crossarms or insulators at the top of the pole - primary distribution. These are the high-voltage lines, typically thousands of volts. They are ComEd's responsibility, full stop. Only utility-qualified line-clearance crews work near them. No homeowner, no general tree service.

The lowest wire running from the pole to your house - the service drop. This is the line serving your meter. Lower voltage than the primary, but still absolutely lethal and still ComEd's wire up to the attachment point at your house. If a tree is growing into your service drop, ComEd handles it - and they will often temporarily drop and reconnect the service so a tree service can work safely, if that is what the job needs.

Wires in a bundle lower on the pole, often with a steel messenger - communications. Cable, phone, and fiber. Not energized at dangerous levels, and not ComEd's. Those belong to the individual providers, and a tree service can generally work around them with far less ceremony.

If you cannot tell which is which, that is a completely reasonable place to be, and it is a good reason to have someone look rather than guess.

When ComEd does it free

ComEd runs a scheduled vegetation management program on its distribution system. Clearance pruning around primary lines is done on a cycle, at no cost to the homeowner, because keeping trees out of those lines is how the grid stays up.

What this means for you:

• Branches growing into the primary lines: call ComEd. This is their program, their crews, and their cost. The number is on your bill, and they take vegetation reports directly.
• Branches on or near your service drop: call ComEd first to establish what they will do. Sometimes they trim it. Sometimes they will arrange a temporary disconnect so other work can happen safely.
• A wire down, arcing, or on the ground: call 911 and ComEd immediately. Then stay away, keep everyone back, and do not go near the tree, the wire, or anything touching either. Nothing about this is a tree service call until the utility has made it safe. Tree on your house or a power line walks through the emergency sequence.

Two honest caveats. Utility pruning is clearance pruning, not aesthetic pruning. Line-clearance crews cut to create a corridor around the wire, which can leave a tree looking directional or V-shaped. That is the job working as designed, and it is not negotiable - the alternative is an outage or a fire. And utility work follows a cycle, so a non-urgent request may wait. Describing an actual contact or an actual hazard gets a faster response than describing an appearance problem.

What a tree service can and cannot do

A general tree service can work on your tree, on your property, outside the utility clearance zone. That covers most of the crown, the structural pruning, deadwood, and removals where the drop zone is clear of wires.

What it cannot do is work inside the clearance envelope of an energized primary conductor. That requires line-clearance qualification under federal electrical safety rules, specific training, and specific equipment. Any crew that offers to "just take care of" a branch resting on a primary line is telling you something important about how they operate. That is a red flag on the same list as no insurance certificate - see tree service insurance.

The realistic division of labor on a tree tangled in wires:

1. ComEd clears or de-energizes what is theirs.
2. A tree service removes the tree once the drop zone is safe.

Those two steps get coordinated, not skipped. A good crew will make the utility call part of the scope rather than leaving it to you.

Removals under wires

A removal with wires in the drop zone is a different job than the same tree in open lawn, and it should be priced like one. There is no felling it - every piece comes down controlled, rigged and lowered, often in small sections, which takes substantially longer. On a large tree over a service drop, bringing in a crane is sometimes the cheaper and safer answer because it lifts the wood up and away from the wires rather than passing it through them. Crane-assisted removal cost covers when that math works, and how tree removal is priced covers why access and obstacles drive the number far more than height does.

If the tree is dead and over a wire, do not wait. A dead ash over a service drop is the single worst version of this problem - brittle wood, unpredictable failure, and a live conductor underneath. Every month you wait makes it a more expensive and more dangerous job.

Planting so this never happens again

The cheapest fix for a tree-and-wire conflict is not planting one under the wire. The planning rule used by utility foresters:

• Directly under or within 20 feet of primary lines: nothing that matures over about 25 feet. Serviceberry, crabapple, hawthorn, redbud, Japanese tree lilac.
• 20 to 50 feet from the lines: medium trees maturing under about 40 feet.
• Beyond 50 feet: the big shade trees - oak, hackberry, honey locust, linden.

The mature height is the number that matters, not the height at purchase. A silver maple that will reach 70 feet planted under a distribution line is a scheduled conflict with a 15-year fuse. The best trees to plant on the North Shore goes into the species choices.

The short version

1. Assume every wire is live. Stay 10 feet back. Do not trim near wires yourself.
2. Top wires and your service drop are ComEd's. Call them - clearance work on their lines is free.
3. A downed or arcing wire is 911 plus ComEd, not a tree service call.
4. No legitimate tree service works inside a primary line clearance zone. If one offers, do not hire them.
5. Plant short species under wires. Mature height is the only number that matters.

Overhead distribution runs through nearly every street in Evanston, Skokie, Niles, Des Plaines, Park Ridge, and Morton Grove, so this comes up constantly here. If you have a tree with wires in the picture and want an honest read on what is ComEd's and what is yours, request a free on-site estimate.