Vesiro raises €1.6M to cut server costs and energy use through a performance-enhancing Elasticsearch plugin
Gothenburg-based Vesiro, a Chalmers University spinout, has raised €1.6M in a seed round. The funding will be used to scale its Elasticsearch plug-in, which reduces server costs and energy consumption in large-scale data analysis. The round was led by Chalmers Ventures, with Industrifonden as co-lead, alongside Staffan Truvé and a group of new and existing angel investors.
GOTHENBURG, Sweden (February 10, 2026) The rapid growth of global data creation is putting increasing pressure on servers and data centers. Server halls are major energy consumers, and their footprint is growing. In 2021, server halls accounted for roughly one percent of global energy use, a figure expected to rise to ten percent by 2030.
Vesiro, a Chalmers University spinout, develops a performance-enhancing plug-in for Elasticsearch. The software helps companies with large Elasticsearch clusters reduce server costs by increasing the search performance in their existing Elasticsearch instances. Internal benchmarks and pilot customer tests show that Vesiro’s software enables up to three times faster search, which can enable customers to reduce the number of required servers by up to 50 percent.
"Data volumes are growing faster than today’s infrastructure can handle, and our technology makes it possible to analyze large datasets using far fewer servers. This lowers costs while also reducing energy consumption," says Oskar Hagman, co-founder and CEO of Vesiro.
The solution is particularly relevant for companies with high server costs connected to their use of Elasticsearch, for example, in industries like business intelligence, e-commerce and AI. By delivering up to twice the search performance of standard Elasticsearch deployments, the plugin enables organizations to achieve the same results with significantly fewer servers, unlocking substantial cost and energy savings without replacing their current systems.
"Our focus is to make it easy for customers to get value from our technology. With our current solution, companies can achieve significant performance gains and cost savings while keeping their existing systems in place," says Oscar Widén, co-founder and COO of Vesiro.
The company was founded by Hagman and Widén, both alumni of Chalmers’ entrepreneurship program, together with Örjan Vestgöte, a well-known Swedish innovator and the inventor behind the core algorithm.
Vesiro has now raised €1.6M in a seed funding round with participation from Chalmers Ventures, Industrifonden, Länsförsäkringar Göteborg & Bohuslän, Yuncture, First Gate Invest, E14 Invest, Mach One, and angel investors Stefan Mahlstein, Staffan Truvé, Jan Sparud, Petter Eriksson and Magnus Lundgren. The funding will be used primarily to expand the technical team and accelerate product development and market rollout.
"Vesiro is a strong example of how advanced research at Chalmers can be turned into a scalable company, and this journey from idea to a well-funded seed round is exactly what we aim to enable for more entrepreneurs. Vesiro will have an impact on sectors such as business intelligence and e-commerce. In the long term, it has the potential to help global tech companies become far more efficient, reduce their cost for hardware and energy use,” says Oskar Svarfvar, Seed Investment Manager at Chalmers Ventures.
“Vesiro has developed an innovative search algorithm that unlocks value for a broad set of customers struggling with the rapid growth of unstructured data. The solution shows strong potential as a highly scalable and easy-to-integrate addition to existing systems, and we are glad to welcome Vesiro to Industrifonden’s portfolio,” says Tobias Elmquist, Senior Investment Director at Industrifonden.
About Chalmers Ventures
Chalmers Ventures is a leading Tech Investor and Venture Builder in the Nordics, dedicated to creating global growth companies and taking new technology from lab to market. The focus is on university spin-outs and deep tech. We employ a unique dual approach that integrates venture creation with tech investments, harnessing the potential of new research and deep tech within Chalmers. Our expertise lies in initiating and nurturing companies from groundbreaking research, ensuring a robust pipeline of high-quality ventures in which we invest and act as active owners. Our involvement extends through the entire company lifecycle until exit, with the aim to generate substantial business success and make a positive global impact.
About Industrifonden
Industrifonden is Sweden’s Venture Capital Fund looking for unique, scalable innovation that has a meaningful impact on our society. Industrifonden manages more than SEK 5 billion and invest in early-stage companies, from seed to A-round funding with a reach across the Nordics. The investment focus includes specialized technologies and businesses within Deep Tech, Life Science and Transformative Tech. Industrifonden has an evergreen structure which allows a long-term focus on value creation. Read more at industrifonden.com.
