Infiniteria announced the appointment of Kajsa Ryttberg-Wallgren as Chief Executive Officer, effective December 1
Ms Ryttberg-Wallgren succeeds Stefano Madeddu, who will stay in Infiniteria as an advisor after heading the company since its inception in 2023. Ms Ryttberg-Wallgren joins Infiniteria from Stegra, the Swedish company focusing on decarbonising the hard-to-abate steel industry, where she was Chief Growth Officer since 2021. She brings experience in industrial businesses and in establishing new businesses across the world, having previously occupied executive roles in a range of Scandinavian companies such as PIAB, Yara International, Sandvik and Sapa. She is also a Board member of PowerCell Group and WTR Group AB.
Anand Jagannathan, Senior Partner of Antin Infrastructure Partners NextGen strategy, commented: “We’re delighted to welcome Kajsa Ryttberg-Wallgren as CEO of Infiniteria. She offers a strong combination of Swedish industrial experience, a track record in international expansion and strong sustainability credentials, all of which are highly relevant for Infiniteria and the journey ahead of us. We’d like to thank Stefano Madeddu for his many contributions to Infiniteria, establishing the joint venture and putting it on track for growth across Europe. We’re very pleased that he will continue to be involved with the business in an advisory capacity, allowing us to continue drawing on his valuable experience.”
Kajsa Ryttberg-Wallgren added: “I am truly excited to join Infiniteria as CEO at such a pivotal moment. Thanks to Stefano Madeddu, the team, and our partners, we now stand with a first-of-its-kind plant nearing completion and a production and business concept ready to scale. I am grateful to Antin for their trust and look forward to working closely with the entire organisation as we enter commissioning and expand across Europe. Together, we will build a circular and profitable business that makes a real difference for the planet and the generations to come.”
Infiniteria is building its first plant in Uddevalla, Sweden, at the moment, which is expected to start operations in 2026, while planning to establish further end-of-life tyre recycling plants across Europe. The company relies on Enviro’s patented tyre pyrolysis technology to produce reusable materials from end-of-life tyres, forming a fully circular process that will contribute to a reduction in carbon dioxide emissions. The delivery and installation of the five pyrolysis reactors for the tyre recycling plant in Uddevalla were completed in October 2025 in accordance with the schedule previously communicated by Enviro.
The construction of the plant, which has been ongoing for about 1.5 years, is now approaching the point where the majority of the process equipment has been delivered and installed, and the main focus is on further installation. The provisional acceptance certificate (PAC) is expected to be reached in mid-2026. In the first phase, the plant will have an annual capacity to process 34,500 tons of end-of-life tyres.
