Altor Equity Partners is a private equity firm founded in 2003 by Harald Mix and colleagues. Headquartered in Stockholm, the firm manages over €6 billion across several funds and maintains offices throughout the Nordic and DACH regions. It focuses on leveraged buyouts and growth investments in mid-market companies, working closely with management teams and a network of industry experts to improve operations and drive long-term value.
Its investment approach combines transforming established businesses with backing younger companies showing strong potential. Sectors of interest include consumer goods, traditional manufacturing, technology, cleantech, and battery technology. Since inception, Altor has invested in nearly 100 firms and supported more than 300 add-on acquisitions. Through active ownership, the firm aims to raise performance and deliver steady returns, earning rankings among top global private equity players.
Clean technology and battery projects form an important part of Altor’s portfolio. In early 2024, the firm acquired Permascand, a Swedish specialist in electrochemical solutions for hydrogen production. Its first battery investment dates back to 2007 with NorthStar Battery Company, which produces advanced battery products. A 30 percent stake in Vianode came in 2022, targeting synthetic graphite with lower emissions for European energy storage. Aira, a series B investment in late 2023, develops intelligent heat pumps, solar systems, and home energy storage to reduce residential emissions. In 2023, Altor led a €1.5 billion raise for H2 Green Steel, set to build a large-scale green steel plant, and it has backed OX2 and Svea Solar in renewable energy ventures.
