Overstory Series B Round, November 2025

Overstory, a vegetation intelligence company serving electric utilities, has closed a $43 million Series B round to scale its AI-driven wildfire prevention and grid resilience platform. The funding will support further development of its AI-based risk models, expansion of its wildfire offering, and global growth.

The Series B is led by Blume Equity, with participation from Energy Impact Partners and existing investors B Capital, Semapa Next, Pale Blue Dot, CapitalT, Convective Capital, Bentley Systems, MCJ and Moxxie Ventures. Overstory uses high-resolution satellite imagery and artificial intelligence to map and analyse vegetation around power infrastructure, helping utilities identify tree-by-tree risks that can trigger outages or wildfires and optimising where crews should be deployed.

Vegetation is a leading cause of power interruptions and utility-sparked wildfires, and vegetation management is often among a utility’s largest operating expenses. Rising tree mortality, labour costs, electricity demand and more frequent extreme weather events have increased pressure on utilities to manage this risk more precisely. Overstory’s platform turns satellite and other remote sensing data into actionable intelligence, enabling targeted trimming, clearance and asset maintenance to reduce outages, prevent fires and keep power systems safe and affordable.

The company has grown rapidly over the past seven years and now works with six of the ten largest utilities across the Americas. Its team has expanded to more than 80 people from 16 nationalities, covering machine learning, data science, arboriculture and wildfire expertise. Overstory has also appointed Tamara Mendelsohn, a former Eventbrite CMO with experience scaling a business from seed to IPO, as Chief Operating Officer to help guide its next phase of growth.

Alongside the funding, Overstory has launched the next evolution of its Wildfire Intelligence product, featuring a proprietary Fuel Detection Model. This model identifies where the most hazardous fuels are located across a utility’s network—areas where a spark is most likely to ignite and spread—so operators can prioritise the specific locations and actions that will have the greatest impact on wildfire mitigation. Unlike generic, publicly available fire-risk maps, the system provides asset-level recommendations tailored to each grid.

The company positions its technology as a practical climate solution that both reduces the risk of climate-driven disasters and improves the economics of utility operations. By giving utilities precise, data-driven visibility into vegetation and fuel risks, Overstory aims to help them build more resilient, reliable grids and keep communities safer as extreme weather and wildfire threats intensify.