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.

From May 27 to 29, 2026, the international energy harvesting community gathered in Madrid to discuss the latest developments and applications in battery-free and renewable energy supply. The conference was organized by, among others, the Power Sources Manufacturers Association (PSMA), which HEIONTEC recently joined.

How can a startup strategically and realistically tap into international markets with limited resources? This was precisely the question addressed by the workshop “Where Is It Worth Going? Strategic Market Research for Startups,” hosted by startuphub.SH in Kiel, in which HEIONTEC also participated.

We will be exhibiting at the Hannover Messe from April 22–24, 2026, and we cordially invite you to visit us at the German Accelerator joint booth.

We are pleased to announce that HEIONTEC is part of the de:hub Renewable Energy – Excellence Track within the GATEWAY49 accelerator program.

HEIONTEC's technology for generating electricity from ambient heat was recently featured on television: In its “Lokalzeit” program, Westdeutscher Rundfunk (WDR) reported on the development and current state of the research.

The development of a completely new energy source can only succeed through the collaboration of bright minds from the fields of science, technology, and entrepreneurship. At HEIONTEC, people work together who share a common vision: to make ambient heat accessible as a reliable, sustainable, and self-sufficient source of electricity.

HEIONTEC continues its international growth course and has established its own US subsidiary. With this step, the company is strengthening its presence in one of the world's most important technology and energy markets and creating the structural basis for research partnerships, pilot projects, and future commercialization in North America.

HEIONTEC has reached a key technological milestone: for the first time, a fully functional button cell based on its proprietary TEC-G technology has been manufactured and successfully tested in the laboratory. This means that an independently produced, standardized cell format is now available, which forms the basis for performance validation, long-term measurements, and preparation for pilot production.

As our TEC-G technology becomes more visible, we are increasingly receiving reviews and comments generated by generic AI systems such as ChatGPT, Claude, or Gemini. At first glance, these AI-based assessments seem plausible—but when it comes to innovative technologies, they are often way off the mark.

An inspiring evening at hubraum Berlin during the “Renewable Energies” Pitch Night: HEIONTEC presented its TEC-G technology (“electricity from ambient heat”) (pictured: founder & CEO Andreas Heine) and held numerous valuable discussions with investors, experts, and the team from StartUp SH.

Düsseldorf University of Applied Sciences (HSD), under the direction of Prof. Dr. Jens Bockstette, has investigated the electrical properties of our cells in a series of independent measurements. The results are clear: HEIONTEC cells behave in accordance with the characteristics of thermo-electro-chemical generator cells (TEC-G).

HEIONIT GmbH and Smart Product Concepts Limited, Hong Kong, have agreed to collaborate on the planning and implementation of an initial device featuring HEIONTEC's proprietary TEC-G technology. SPC is an international development and production partner that supports companies from the product idea to market launch, with many years of expertise in design, manufacturing, sales, and IoT solutions.

Energy is the foundation of modern societies – and has long become a geopolitical power factor. Crises, conflicts, and market disruptions have revealed how vulnerable global energy systems are: supply gaps, rising prices, increasing import dependencies, and immense pressure to decarbonize.

More than €100,000 crowdfunded in just one week on FunderNation!

HEIONTEC launches crowd investing on FunderNation – market leader in digital corporate financing for deep tech and technology companies! We are excited to take the next step together towards industrialization, market entry, and global scaling.

We are delighted to announce that HEIONTEC is now officially receiving funding for a ZIM feasibility study!

Prof. Dr. Jochen Lauterbach, Smartstate Endowed Chair for Strategic Approaches to the Generation of Electricity (SAGE) at the University of South Carolina, and Kater Heine, CEO of HEIONTEC, are laying the foundation for a research collaboration with the aim of further optimizing the technology and tapping into the US market.

More information will follow soon – stay tuned!

HEIONIT GmbH, a leading company in the field of sustainable energy generation and resource utilization, is pleased to introduce Dr. Peter Commer as a new member of its team.

HEIONIT GmbH and the Düsseldorf University of Applied Sciences have agreed on a joint research cooperation to develop a demonstrator that generates electricity exclusively from ambient heat - for the first time without a temperature gradient.

Our team is growing: we warmly welcome Dr. Frank Schneider!

Our team is growing: we warmly welcome Katharina von Heydebreck as our new CMO!

An article by the Fraunhofer Institute on the use of waste heat with the help of THERMOELEKTRIK is well worth reading.