Vegetation management

Keeping communities
safe and power reliable

Report a vegetation issue
Our approach to a safer, greener grid

Why vegetation management matters

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Reliability

Preventing outages and service interruptions

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Safety

Reducing fire risks and protecting public safety

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Environmental care

Tailored to Ontario’s wildlife, trees, and terrain

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Regulatory compliance

Committed to regulatory excellence

Vegetation management at Hydro One

We manage both transmission and distribution rights-of-way to protect infrastructure and maintain access for inspections and emergency response. Our approach follows best practices, including integrated vegetation management, balancing customer input, reliability data and environmental considerations.

Our work includes

  • Tree trimming or cutting, including manual or mechanical removal of trees and branches
  • Brush control including mulching and mowing
  • Selective herbicide application
  • Pollinator-friendly habitat creation (where feasible)

These efforts maintain safe clearance from power lines, reduce hazards and support Ontario’s biodiversity.

Our commitment in action

Safety & environmental
responsibility

Strict safety protocols

Compliance with the Occupational Health and Safety Act and Electrical and Utilities Safety Association standards.

Eco-friendly practices

Selective herbicide use, habitat protection and biodiversity promotion.

Species protection

Full compliance with Provincial and Federal Species at Risk protections. At Hydro One we work closely with Ontario’s Ministry of Natural Resources.

We’re proud of our environmental commitments

Learn more

Frequently asked questions

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Reporting and safety concerns

How do I report a tree‑related safety concern or request tree trimming?

For immediate hazards, call 1‑888‑664‑9376 right away. For routine requests on your property, use our online tree trimming form. Hydro One does not trim trees on private property beyond our safety requirements.

What happens if trees touch power lines?

Report hazardous situations immediately to Hydro One. Never climb or trim trees near power lines, this can cause serious injury or death.

For urgent or hazardous situations, call 1‑888‑664‑9376. Emergency tree trimming services may include but are not limited to smoking, sparking or burning trees, and hazards to the line including split, leaning, hanging or uprooted trees.  Refer to the tree trimming service page for more information.

Can I trim trees near power lines myself?

No. Only line-clearance qualified professionals should work near electrical equipment. Attempting this work without training can result in serious injury or death. In the province of Ontario the Electrical Safety Authority provides guidelines for vegetation management around power lines (refer to Guidelines for Vegetation Management Around Powerlines) and customers can request a temporary disconnect.

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Property owner responsibilities

What is my role as a property owner?

Maintain trees and shrubs to prevent interference with power lines. Request a Temporary Disconnect once per year before doing any work. Hiring a qualified arborist is strongly recommended.

Can I plant trees near power lines?

Avoid planting trees or shrubs near power lines or electrical equipment. If planting near a line is unavoidable, check local by-laws and property easements first. For more information on compatible species visit caring for your property.

Always click before you dig through Ontario One Call.

What if I don’t want trees on my property trimmed or removed?

Hydro One will work with property owners to explain what is required for safety and reliability. For inquiries stemming from notification of planned vegetation management please contact the number you are provided with or the Customer Contact Center.

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Vegetation management practices

Why does Hydro One trim or remove trees?

Trees can interfere with electrical infrastructure, causing outages or fire risks. Clearing vegetation ensures safe, reliable power and quick restoration during emergencies.

Will Hydro One use herbicides?

Yes, but only selectively and with landowner consent. Herbicides help prevent regrowth and support low-growing plant communities. All applicators are certified and follow strict safety guidelines.

How often does Hydro One perform planned vegetation maintenance?

  • Distribution lines: Based on reliability data, vegetation growth and customer feedback.
  • Transmission lines: On a cyclical schedule, meeting industry and North American Reliability Corporation standards.
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Work notifications and impact

How will I know if Hydro One is doing work near my property?

  • Distribution: You’ll be notified in person, or by phone, text, or letter for planned tree removal on your property. You may not be notified of routine trimming, brush control, or work on adjacent properties.
  • Transmission: Landowners and adjacent property owners are notified if there are significant impacts to the property.
  • During storm response, notifications may not occur due to urgent restoration needs.

Will planned vegetation work cause power outages?

Power interruptions are not expected. If a planned outage is required for safety, Hydro One will notify affected customers in advance.

What happens after Hydro One completes vegetation work?

The answer to this question depends on the scenario in which vegetation work was initiated.

Planned vegetation maintenance: Small branches are removed from landscaped areas. Body wood will be left on site and cut into manageable lengths, approximately 3-4 feet in manicured areas. Hydro One does not grind stumps or replace trees.

Customer or storm-initiated vegetation maintenance: Landowners are responsible for cleanup after requested trimming or storm response.

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Careers

How do I start a career with Hydro One?

Explore current roles and apprenticeship programs on our careers page.

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