Theion recently closed a $16M million Series A funding round, led by venture firm Team Global, with additional backing from Geschwister Oetker Beteiligungen and solar energy company Enpal. The funding will support the commercialization of Theion’s proprietary battery platform, with strategic applications across aviation, mobility, and stationary storage sectors.
Theion’s innovation is centered around sulfur’s gamma-monoclinic crystal structure, addressing key limitations in sulfur battery designs—particularly cycle life and material stability. The company aims to reach over 1,000 charge cycles, considered a baseline for commercial feasibility in both mobility and stationary energy storage.
Using sulfur—a readily available and inexpensive material—Theion eliminates the need for nickel and cobalt, which are both cost-intensive and environmentally taxing. The result is a cathode material cost reduction of up to 99%, improved manufacturing efficiency, and reduced carbon footprint during production.
Theion plans to introduce its battery technology across three primary markets:
By diversifying initial use cases, Theion seeks to accelerate technology validation across sectors with distinct performance and cost requirements.
Theion’s CEO, Dr. Ulrich Ehmes, emphasizes the importance of developing scalable European battery technologies to meet growing demand and reduce reliance on imported raw materials. Battery demand is expected to triple by 2030, reaching approximately 8 TWh per year and driving an estimated $540 billion in annual market value.
Team Global CEO Lukasz Gadowski commented on the strategic relevance of crystal sulfur batteries, highlighting their potential to support “safe, sustainable, and cost-efficient electrification” across sectors. The reduced environmental footprint and modular design of theion’s technology may contribute to more adaptable energy storage systems in line with EU sustainability objectives.
By focusing on a supply chain rooted in widely available materials, Theion is contributing to a shift toward more resilient and environmentally responsible battery production across Europe. If successful, this approach could reshape sourcing strategies, cost structures, and R&D investments in sectors heavily dependent on battery performance.
