Plume raises $3.9M
Plume, a San Francisco geospatial-data startup that came out of Y Combinator, closed a $3.9M round led by AENU to fund an AI platform that uses natural language to analyse geospatial data for identifying optimal renewable‑energy sites. The company says it plans to expand across Europe and North America and was founded by Edouard Labarthe and Marc Watine. (x.com)
Plume has raised $3.9 million to build software that helps renewable-energy developers find project sites with plain-language prompts. (eu-startups.com) The round was led by AENU, with Y Combinator, Kima Ventures, Raise Phiture, Better Angle, and Collaborative Fund also participating, according to reports published on April 9 and April 10, 2026. (tech.eu, thesaasnews.com) Plume was founded in 2024 by Edouard Labarthe and Marc Watine, and Y Combinator lists the company as based in Paris with four employees. (ycombinator.com) Geospatial data is location data: maps, land-use records, grid connections, protected areas, and weather layers that determine whether a wind or solar project can actually be built. Plume says its software lets developers query that data in natural language instead of checking each source by hand. (ycombinator.com, startupresearcher.com) That matters because site selection and permitting can stretch for years before a project reaches construction. Tech.eu reported that Plume’s platform combines more than 150 continuously updated geographic datasets with artificial-intelligence agents that read unstructured planning and regulatory documents. (tech.eu) Startup Researcher reported that Plume says developers can qualify sites up to 20 times faster with the platform. The company told multiple outlets it will use the new funding to grow its team and expand across Europe and North America. (startupresearcher.com, eu-startups.com) Tech.eu identified Labarthe as a former Palantir employee and Watine as a former Harvard researcher focused on geospatial artificial intelligence. The same report said Plume’s software is aimed at prospecting, permit processing, and grid-connection work for renewable projects. (tech.eu) The pitch to investors is that faster screening can cut dead-end development work before companies spend months on land, legal, and grid studies. Plume is now using fresh capital to turn that pitch into a larger footprint on both sides of the Atlantic. (vestbee.com, eu-startups.com)
