Related News
Related News
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Tips to stay cool while saving money this summer
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EWEB offering additional energy efficiency supplement to qualified customers
Current EWEB residential electric customers may qualify to double their energy efficiency rebates with a limited time supplement.
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EWEB opens application for 2024 Electric Mobility Community Grants
Grant awards of up to $30,000 to cover costs associated with electric mobility projects.
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Upgrades to Eugene's downtown electric network continue
You may have noticed construction this week on the corner of 7th and Pearl Street. That’s because crews replaced a corroded, aging vault with an innovative, new Voltek vault. The Voltek design allows for the new infrastructure to be built inside of the existing aging vault. We’re able to install the new vault while the cables are still energized, minimizing disruption to customers and traffic while cutting construction time in half.
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The Big Freeze 2024: After Action Report
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Nine days without power: My ice storm story as an EWEB customer and employee
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Leaburg Decommissioning Action Plan
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Start the New Year saving money with energy saving tips
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Currin Substation: End of year update
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EWEB Recognized with Excellence in Communications Awards from American Public Power Association
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EWEB invests in satellite-based forestry analytics for vegetation management
May 30, 2024 • By Robyn Smith, EWEB Communications
Vegetation management is an essential tool in EWEB's power outage mitigation toolbox.
As we witnessed during the back-to-back ice storms in January, hazardous falling trees and snapped branches coming down on power lines create prolonged outages and unsafe working conditions during severe weather events.
That’s why, each year, crews trim over 500 overhead 'line miles' of vegetation to minimize falling trees and branches, avoid outages and increase the electric system's reliability.
EWEB maintains over 1,300 miles of overhead transmission and distribution lines. To aid crews in identifying hazardous vegetation growth in a sometimes heavily forested service territory, EWEB is utilizing a new satellite-based forestry analytics software called Overstory.
"Using remote sensing data, we help utilities optimize resources, mitigate risk, and strategically direct the vegetation management that matters most," said Overstory Customer Success Manager Kathryn Morse.
The first year's analysis (conducted in the fall of 2023) focused on areas with denser tree coverage, like south Eugene and McKenzie River service areas. The satellite imagery captures overhead power lines with nearby tree canopies and uses technology to quickly identify areas that could benefit from additional vegetation management. It also creates a heat map of places with high tree mortality—these 'hazard' trees are more likely to fall into powerlines during severe weather.
EWEB's Resiliency Program Manager Jeannine Parisi said, "The goal is to efficiently target tree-trimming in areas of highest risk and develop an action plan to address hazard trees that pose a fall-in risk to our overhead lines. It's especially helpful for terrain that's hard to access for visual inspection."
How the vegetation intelligence works:
- It creates vegetation data from remote sensing sources (detects tree height, health, and species).
- It combines data that matters most for EWEB (pole and line location, wildfire risk maps, trim specifications, terrain, and slope maps).
- It helps build a data-driven vegetation management program (management cycle prioritization, hazard trees, encroachment, reliability forecasts, and contractor audits).
In May, the Overstory team joined EWEB's vegetation crew in the field to review the first-year data analysis. In the field, the team easily located some of the riskiest areas.
"By looking at our risk matrix, utilities can identify the amount of vegetation nearby, both horizontally and vertically, to conductors, which helps us accurately project vegetation-related outages," said Morse.
Last year, Overstory satellite imaging analyzed vegetation across 180 ‘line miles' and found that EWEB's current vegetation management practices are very effective at maintaining clearance, with just a few areas that might need additional trimming work.
"We just captured new satellite imagery to update the analysis, particularly given the amount of tree damage from the ice storm," said Parisi. Overstory will analyze about 425 ‘line miles' of EWEB's electric system this year.
This forward-thinking vegetation management tool is just one example of how EWEB proactively invests today to prepare for a resilient tomorrow.
Related Programs
Trees are a major cause of power outages in the Eugene area. To help prevent tree-related outages we proactively prune trees to help keep our equipment clear.