There is a simple, terrifying equation for a utility manager in a fire-prone region: one tree, one power line, one spark. For decades, the solution has been brute force,send crews out to trim everything within a certain distance, a costly and imprecise operation that still misses the real threats. Overstory, an Amsterdam-based startup, has built a business on a different premise: you can see the entire forest from space, and you can teach a machine to spot the single dangerous branch.
Founded in 2018, Overstory sells AI-powered vegetation intelligence to electric utilities on a per-mile SaaS basis. Its models ingest high-resolution satellite imagery, analyze a one-to-two-kilometer buffer around power lines, and estimate which trees pose the greatest threat based on species, health, growth rate, and local conditions like terrain and wildfire fuel maps [Perplexity Sonar Pro Brief]. The goal is to turn a multi-billion-dollar annual operational expense,vegetation management,from a blunt instrument into a targeted risk-mitigation program. The company now serves over 50 utilities globally, with about 90% of its customers in North America [TechCrunch, Oct 2023] [Startup Intros].
A data flywheel fueled by arborists and satellites
The core of Overstory's product is a proprietary AI infrastructure built to process satellite imagery at a global scale. The company's models don't just map trees; they are trained to understand grid-vegetation interaction. This requires a specific data flywheel. In-house arborists and contributions from key customers help label and validate the AI's predictions, refining its ability to determine a tree's height, species, and health from orbit [Overstory Blog, 2026].
This focus creates a tangible return on investment that utilities can quantify. An unplanned outage can cost hundreds of thousands of dollars per hour. A wildfire sparked by a downed line can lead to liabilities in the billions. By predicting where contact is most likely, Overstory aims to help utilities shift spending from reactive emergency trimming to proactive, optimized cycles, potentially saving millions while improving safety.
The team and the Series B scale-up
Overstory was co-founded by Indra den Bakker, who brought a background in data science and geospatial machine learning, and Anniek Schouten, with experience in sustainability strategy and operations [Perplexity Sonar Pro Brief]. The company is now led by CEO Fiona Spruill, who transitioned from Chief Product Officer to the top role [Apple Podcasts, 2026]. It has grown into a remote-first team of more than 100 people distributed across Amsterdam, Lisbon, and the U.S., with over 50% female leadership [LinkedIn, 2026] [Overstory].
A $43 million Series B round in November 2025, led by European climate-tech growth firm Blume Equity, signaled investor confidence in this scaling phase [Overstory Blog, Nov 2025]. The capital is earmarked for advancing its AI risk models and expanding its reach. The funding history shows a steady climb from a $1.7 million seed led by Pale Blue Dot to today's war chest.
2020 Seed | 1.7 | M USD
2023 Series A | 14 | M USD
2025 Series B | 43 | M USD
Where the wheels could come off
Overstory operates in a competitive and technically demanding space. Its most direct competitor is AiDash, another AI-for-infrastructure company, while broader geospatial giants like Planet Labs offer raw imagery and analytics tools. The risks for Overstory are not trivial.
- Model accuracy under pressure. The AI's predictions are only as good as its training data and its performance under novel, climate-driven conditions like unprecedented drought or wind patterns. A missed high-risk tree could have catastrophic consequences, putting immense pressure on model reliability.
- Sales motion in a conservative sector. Selling to regulated utilities is famously slow. While the ROI case is strong, convincing risk-averse, budget-constrained organizations to adopt a new software platform and change long-standing operational workflows is a marathon, not a sprint.
- The commodity imagery trap. The company's edge is in its proprietary AI, not in owning satellites. It relies on commercial imagery providers. If those costs rise significantly or if a competitor vertically integrates, it could squeeze margins.
The company's answer to these risks is its focused data flywheel and its growing roster of flagship customers, including four of the top ten U.S. utilities [Startup Intros]. Each new utility provides more terrain-specific data, theoretically making the models smarter and creating a barrier to entry for generic mapping tools.
The next twelve months
The immediate roadmap is about proving the Series B thesis: that Overstory can move from a valuable tool for a few dozen utilities to a standard layer of operational intelligence for the global industry. Key milestones to watch will be the announced rollout of its next-generation wildfire risk models [I amsterdam, 2025] and expansion into new geographic markets, potentially in Europe where regulatory pressure on grid resilience is mounting.
Landing a major investor like Blume Equity, which focuses on scaling proven climate solutions, suggests the next phase is about commercialization and market capture as much as technical R&D. The hiring of a Chief Technology Officer, as indicated by a recent public search, points to a strengthening of the technical leadership bench for this scale [LinkedIn, 2026].
On the back of an envelope, the unit economics tell a compelling story. If a utility spends, say, $1,000 per mile annually on traditional vegetation management, and Overstory's platform can identify and prevent just 10% of unnecessary trimming and emergency work, the savings quickly outstrip its SaaS fee. For a utility with 10,000 miles of line, that's a potential eight-figure annual impact. The real test isn't the satellite's eye, but the budget manager's spreadsheet.
Overstory's bet is that in the age of climate-driven grid stress, the incumbent it must beat isn't another software startup. It's the legacy practice of sending a crew into the woods with a chainsaw and a hope.
Sources
- [TechCrunch, Oct 2023] Overstory Raises $14M Series A | https://www.businesswire.com/news/home/20231019013988/en/Overstory-Raises-$14M-Series-A-to-Help-Solve-Climate-and-Biodiversity-Crises
- [Startup Intros] Overstory: Funding, Team & Investors | https://startupintros.com/orgs/overstory
- [Overstory Blog, 2026] A Year of Resilience: A Letter from Fiona Spruill | https://www.overstory.com/blog/a-year-of-resilience
- [Apple Podcasts, 2026] Overstory CEO Fiona Spruill - Watt It Takes | https://podcasts.apple.com/us/podcast/overstory-ceo-fiona-spruill/id1554962073?i=1000697417250
- [LinkedIn, 2026] Company description and team details | https://www.linkedin.com/company/overstoryai
- [Overstory] Company homepage and about page | https://www.overstory.com/
- [Overstory Blog, Nov 2025] Series B announcement | https://www.overstory.com/blog/series-a-announcement
- [I amsterdam, 2025] Rollout of next-generation AI risk models | https://www.iamsterdam.com/
- [Business Wire, Oct 2023] Overstory Raises $14M Series A | https://www.businesswire.com/news/home/20231019013988/en/Overstory-Raises-$14M-Series-A-to-Help-Solve-Climate-and-Biodiversity-Crises