Endra, a Stockholm-based startup that builds AI software for mechanical, electrical and plumbing (MEP) engineering in buildings, has acquired Planlabs, a Swiss company that uses AI to automate the design of building systems. The deal was reported by Tech.eu on September 15, 2026, alongside the launch of Endra's new electrical design platform, Power Studio.
Terms were not disclosed.
Planlabs' five-person team will join Endra, and its technology will be used to build out Endra's mechanical engineering capabilities once the two are integrated. Endra said it also plans to add a plumbing module in 2027, which would give it products in all three MEP disciplines.
What Planlabs built
Planlabs was founded in Switzerland in 2024. It developed software that combines geometry, data and physics engines to generate designs for building systems automatically.
Rea Sodero, Planlabs' co-founder and chief executive, said the company was founded on the idea that mechanical engineering could be done differently, using automation to produce coordinated systems that do not clash with one another while engineers stay in control of the result.
Planlabs' funding and investors were not reported.
“With Endra, we have found a team that shares this vision and has the ambition, technology and reach to bring it to engineers around the world. Together, we have the opportunity to build something much bigger: a platform that transforms how every MEP discipline is engineered.”
Why Endra is buying
Endra started with electrical engineering, and the Planlabs deal is how it plans to cover mechanical systems. Instead of building a mechanical product from the ground up, it is taking on a team that has already spent two years working on automated design for those systems.
Sodero said Planlabs had found in Endra a team with the same vision and with the ambition, technology and reach to bring it to engineers worldwide, and that together they could build a platform covering every MEP discipline.
The acquisition was announced together with Power Studio, Endra's agentic platform for electrical engineering. It combines electrical design, calculations, simulation and documentation in one system. Engineers set project requirements, hand tasks to AI agents and review what the agents produce. Endra said the platform can complete the electrical design of a 500,000-square-foot commercial building in under a day, compared with about two months using traditional methods.
How Power Studio works
Power Studio includes Playbooks, which apply a firm's own engineering standards across its projects, and AI agents for tasks such as routing and unit placement. A physics engine checks designs against physical constraints and building codes, and a Type Rooms feature lets a single room design be copied to every matching room in a building.
Its document engine can produce Revit models, single-line diagrams, shop drawings, panelboard schedules and bills of materials, all linked to the underlying design. Endra said engineers keep control throughout and that customer data is not used to train its models.
Niklas Lindgren, Endra's chief executive and co-founder, said the software handles repetitive work so that engineers have more time for judgment and design, with engineers setting requirements and signing off at each stage.
The founders and the funding
Endra was founded in October 2024 by Lindgren and Anton Juric on the commercial side and David Rydberg and Gustav Hammarlund on the technical side, according to HackerNoon. It signed its first customers in August 2025.
The company raised a $20 million seed round led by Notion Capital in December 2025, followed by a $50 million Series A led by Andreessen Horowitz, with Notion Capital and Norrsken VC also backing the company, HackerNoon reported. That brings its total funding to about $74 million. Endra has opened offices in New York, San Francisco and London as it expands into the United States and adapts its software to American and British building codes.
HackerNoon framed Endra's growth against a boom in data centre construction that is outpacing the supply of engineers. Buying Planlabs gives it a specialist team in a discipline it had not yet covered, a little under a year after its seed round.
