Zurich-based Climate and PropTech startup viboo, founded in 2022, has closed its second financing round at €3.3 million. The round was led by Realyze Ventures, with participation from Zürcher Kantonalbank, existing investors HTGF and Swisscom, and new backers. The capital will fund market entry in Germany and product expansion from an energy management tool to a holistic building management system.
viboo has developed a cloud-based building management system that can be retrofitted and wirelessly connects with common IoT devices such as smart thermostats in commercial buildings. Its AI learns heating behaviour and controls it proactively, targeting savings without compromising comfort and with minimal upfront investment. The platform is deployed in more than 100 buildings and has delivered average energy savings of 27%. Customer contract volumes multiplied eightfold from winter 2023/24 to winter 2024/25.
The company’s approach avoids proprietary hardware, instead integrating with products from leading building technology manufacturers through open software interfaces. An installer app enables rapid deployment by any qualified installer. viboo sells directly to municipalities and real estate owners and partners with installation and facility management providers.
Fresh funding will support the German rollout, where demand is being propelled by the Building Energy Act, and will extend the platform with modules such as individual heating cost billing. With its LP network in German real estate, Realyze Ventures will support go-to-market efforts. First LPs have already contracted viboo for building implementations.
Felix Bünning, Co-Founder of viboo, said: “We have built a strong foundation in Switzerland – with more than 40 satisfied customers, some already rolling out across portfolios, and significant energy savings in existing buildings. Our solution convinces because it is easy to implement, delivers fast results, and generates immediate savings. Now we are taking the next big step with our entry into our first EU market, where a combination of energy prices and regulation creates a strong pull. Realyze Ventures was our preferred partner from the start, thanks to their deep industry expertise and excellent network. With Zürcher Kantonalbank, we are also adding one of Switzerland’s most renowned early-stage investors.”
Marnix Roes, Investment Manager at Realyze Ventures, said: “With viboo, we are investing in an innovative software solution that drives the decarbonization of existing buildings and addresses a huge market. The easy and fast implementation, combined with rapid ROI leads to high satisfaction among customers and users. Through our broad Realyze Ventures ecosystem, we will actively accelerate viboo’s go-to-market in Germany.”
Nicola Leuenberger, Investment Manager at Zürcher Kantonalbank, added: “viboo clearly demonstrates how economic and ecological goals go hand in hand. With a plug-and-play solution delivering 20–40% energy savings annually, viboo should be on every real estate asset manager’s roadmap. We look forward to supporting viboo in the upcoming scaling phase.”
Read the orginal article: https://www.eu-startups.com/2025/10/zurich-based-viboo-closes-e3-3-million-to-scale-ai-driven-building-management-in-germany/
