HEIONTEC and Celtrix Launch Strategic Partnership to Manufacture Innovative Energy Cells for Self-Sustaining Sensors

Lübeck / Itzehoe – HEIONTEC and Celtrix GmbH have entered into a strategic technology partnership. The goal of the collaboration is to manufacture thermoelectrochemical generator cells (TEC-G cells) based on the technology developed by HEIONTEC for harnessing ambient heat. In the future, these innovative energy cells will supply sensors and other ultra-low-power systems with energy in a self-sufficient, battery-free manner and with significantly reduced maintenance requirements.

Through this partnership, both companies are bridging the gap between technological development and industrial cell production. The goal is to gradually bring the technology developed by HEIONTEC to market readiness and make it available for future applications in the field of energy-autonomous sensor technology.

As a first step, Celtrix will manufacture initial prototypes based on HEIONTEC’s technology. Looking ahead, the collaboration is intended to evolve toward scaling up and industrial mass production. In this way, the partners are combining HEIONTEC’s technological innovation with Celtrix’s expertise in battery and cell manufacturing.

HEIONTEC develops thermoelectrochemical generator cells (TEC-G) that generate electrical energy directly from ambient heat. This allows sensors and other ultra-low-power systems to operate for long periods with minimal maintenance or entirely without batteries. The technology is particularly well-suited for applications where replacing a battery is technically difficult, cost-prohibitive, or impossible.

Celtrix brings to the partnership its expertise in the development, manufacturing, and industrialization of specialized battery cells and energy systems. The Itzehoe-based company focuses on application-specific cell and battery systems for demanding technical applications where standard solutions reach their limits.

“Together with HEIONTEC, we are working on a technology that holds great potential for self-sufficient sensor technology and low-maintenance energy systems,” says Stefan Klebor, co-founder of Celtrix GmbH. “Our contribution is to turn a promising technology into production-ready cells—initially as prototypes and, looking ahead, with a view to future series production.”

HEIONTEC also views the partnership as an important step toward market readiness. Through the collaboration with Celtrix, development, prototyping, and scaling are to be more closely integrated to accelerate the transfer of the technology into concrete applications.

“This partnership demonstrates the potential that arises when we bring together technology, entrepreneurial spirit, and industrial implementation expertise in Schleswig-Holstein,” says Andreas Heine, founder and CEO of HEIONTEC. “HEIONTEC developed the technology, while Celtrix contributes its expertise in cell manufacturing and industrialization. Together, we aim to bring a solution to the world from Schleswig-Holstein that can make sensor applications more independent, low-maintenance, and sustainable.”

The collaboration emerged as part of GATEWAY49’s Excellence Track Renewable Energy. Support from Lübeck’s startup ecosystem facilitated the networking of the two companies and significantly accelerated the technology transfer.

Through this partnership, HEIONTEC and Celtrix are combining their complementary strengths: HEIONTEC contributes the technology for generating energy from ambient heat, while Celtrix brings the expertise to translate this into functional cell prototypes and scalable manufacturing processes. Together, the two companies aim to help make sensor applications more energy-self-sufficient, require less maintenance, and be more easily scalable on an industrial scale.