By OverstoryLearning Objectives
- Describe what Overstory does and why vegetation management is a major utility challenge
- Explain how satellite imagery and machine learning identify vegetation encroachment on power lines
- Identify how risk-based prioritization differs from blanket cyclic trimming
What Is Overstory?
Overstory is a company that helps electric utilities see where trees and other vegetation are growing too close to power lines. Vegetation contact is one of the leading causes of power outages and can spark wildfires, and clearing it is typically a utility's single largest maintenance budget. Traditionally, crews trim on fixed cycles or rely on periodic ground surveys, which means money is spent on low-risk spans while dangerous ones can go unnoticed between inspections. Founded in 2018 and based in Amsterdam, Overstory replaces that guesswork with a continuously updated, data-driven map of vegetation risk across a utility's entire service territory.
By analyzing satellite imagery with machine learning, Overstory shows utilities in near real time exactly where vegetation threatens reliability and where wildfire risk is highest. In 2026, the company raised additional funding to expand its AI wildfire-prevention tools.
💡Key Concept
Vegetation management and wildfire risk: Vegetation management is the ongoing work of keeping trees and brush clear of power lines. When a branch contacts an energized line it can cause an outage or, in dry and windy conditions, ignite a wildfire. Because clearing every mile on a fixed schedule is expensive and imprecise, utilities increasingly want to target the specific spans where encroachment and ignition risk are greatest.
What Overstory Does
- Vegetation mapping — builds a detailed, current map of where vegetation is encroaching on power lines across the network
- Risk prioritization — pinpoints the highest-risk spans so crews focus effort where it matters most
- Wildfire-risk insight — highlights areas where dry vegetation near lines raises the chance of ignition
- Reliability support — helps prevent vegetation-caused outages before they happen
- Program planning — informs where and when to trim, replacing blanket cyclic trimming with targeted action
How AI Is Applied
Overstory's core technology is geospatial computer vision. The company ingests high-resolution satellite imagery and uses machine-learning models to interpret it — identifying individual trees and vegetation, estimating their height and proximity to conductors, and detecting where growth is closing the gap to a power line. This turns raw imagery into an actionable picture of encroachment that would take crews enormous time to gather on the ground.
Because the analysis can be refreshed as new imagery arrives, utilities get an up-to-date view rather than a snapshot from the last inspection cycle. The models rank spans by risk, weighing how close vegetation is and how likely contact is to cause an outage or ignition. That risk ranking is what lets a utility move away from trimming everything on a schedule and instead direct budget to the specific locations most likely to fail.
Who Uses Overstory
Overstory is used by electric utilities and grid operators responsible for maintaining reliable, safe power lines. Its buyers include vegetation-management teams, reliability engineers, and wildfire-mitigation groups within utilities, especially those operating in regions where drought and wind make wildfire a serious concern.
Pricing
Overstory is enterprise software with quote-based pricing. Cost depends on the size of the utility's service territory, how much of the network is analyzed, and how frequently the vegetation map is refreshed. Utilities contact Overstory directly for a tailored quote.
Company Details
| Detail | Info |
|---|---|
| Company | Overstory |
| Founded | 2018 |
| Headquarters | Amsterdam, Netherlands |
| Category | Vegetation management and wildfire-risk analytics |
| Core Technology | Satellite imagery with geospatial machine learning |
| 2026 Milestone | Raised funding to expand AI wildfire-prevention tools |
| Website | overstory.com |
Strengths
- Territory-wide visibility — maps vegetation risk across an entire network instead of sampling by inspection
- Targeted spending — helps redirect the largest maintenance budget toward the highest-risk spans
- Near real-time — refreshes as new satellite imagery arrives, rather than relying on stale survey data
- Wildfire focus — highlights ignition risk, a growing priority for utilities in fire-prone regions
- Scalable — satellite-plus-AI analysis covers large areas that would be impractical to survey on the ground
Limitations and Considerations
- Imagery dependent — accuracy relies on the resolution, recency, and availability of satellite imagery
- Analytics, not action — Overstory identifies risk, but utilities still need crews to do the physical clearing
- Model validation — remote detections benefit from field confirmation, especially in complex terrain or canopy
- Enterprise scope — built for utility programs and quote-based, not a self-serve consumer product
Key Takeaways
- Overstory uses satellite imagery and machine learning to map where vegetation is encroaching on power lines
- It gives utilities a near real-time view of reliability and wildfire risk, refreshed as new imagery arrives
- Risk-based prioritization lets utilities target the highest-risk spans instead of trimming everything on a fixed cycle
- Best for electric utilities that want to spend their vegetation-management budget more precisely and reduce wildfire risk
