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Reliability & Tree Trimming

Trees and other vegetation are the number one cause of power outages. That's why we at Appalachian Power Company (APCo) maintain our rights-of-way with tree trimming and vegetation management.

Keeping our rights-of-way in the best possible shape has a big effect on our overall reliability. While trimming and vegetation management cannot prevent outages during major events, they help improve overall reliability and make restoration faster by improving access to lines and equipment.

Vegetation Management in Our Region

In Tennessee, we use a system called cycle-based vegetation management. This program began in 2018 with the goal of clearing all overhead lines over a four-year period. This method allows for vegetation management on entire circuits to improve reliability for all customers on each circuit. Before tree crews enter an area, your local APCo forester or other representative will review the conditions to determine the work to be done. He or she looks for trees growing directly under power lines, overhanging branches, hazardous trees or other hazardous issues. Overall, our goal is to provide safe and reliable electric service, and while our vegetation management work is focused on protecting the electric system, property owners remain responsible for managing trees and limbs outside of that scope.

We maintain more than 26,000 miles of overhead distribution lines in Virginia. Our maintenance program is developed on a yearly basis using current vegetation conditions and outage history data to focus our resources where the need is greatest. Before tree crews enter an area, your local APCo forester or other representative will review the conditions to determine the work to be done. He or she will look for trees growing directly under power lines, overhanging branches, hazardous trees or other hazardous issues. Overall, our goal is to provide safe and reliable electric service, and while our vegetation management work is focused on protecting the electric system, property owners remain responsible for managing trees and limbs outside of that scope.

In West Virginia, we use a system called cycle-based vegetation management. This program began in 2014 with the goal of clearing all overhead lines over an initial six-year period. The initial six-year implementation is completed, and clearing is now performed on a four-year cycle. This method allows for vegetation management on entire circuits to improve reliability for all customers in the area. Before tree crews enter an area, your local APCo forester or other representative will review the conditions to determine the work to be done. He or she looks for trees growing directly under power lines, overhanging branches, hazardous trees or other hazardous issues. Overall, our goal is to provide safe and reliable electric service, and while our vegetation management work is focused on protecting the electric system, property owners remain responsible for managing trees and limbs outside of that scope. Since its implementation in 2014, our vegetation management program in the state has reduced the minutes of service interruptions experienced by customers by 88%.

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