About us

Inspired by the idea of developing a sustainable and economical energy storage system, JenaBatteries was founded in 2013 by an interdisciplinary team of research scientists at Jena University and economics experts.

Soon, the founding team led by Martin Hager, Tobias Janoschka and Ulrich Schubert, with the support of Deutsche Effecten- und Wechsel-Beteiligungsgesellschaft AG (DEWB), took the idea from the lab to a kW-scale battery demonstrator.

With this metal-free redox flow battery the foundation for a new technology was laid. In 2015, the technology won the IQ Innovation Prize („IQ Innovationspreis Mitteldeutschland“) and in 2017 the Thuringian Research Prize („Thüringer Forschungspreis“). The juries acknowledged the innovative approach towards a safe, sustainable form of energy storage. In 2016, strategic investment replaced the initial venture capital. The family-ownedWirthwein AG and the Ranft Group took a stake in the company. Dr Olaf Conrad was appointed Managing Director – and, thus, the next important steps were taken to position JenaBatteries for further successful and financially sound growth.


Sustainable solution
for green energy

In a world powered by renewable energy, JenaBatteries is the leading supplier of metal-free stationary energy storage offering a sustainable alternative to metal-based solutions containing lithium, vanadium, lead or other critical scarce metals. Our innovative redox flow batteries make an important contribution to the conversion of the energy system and will have been integrated into numerous energy systems by 2030. JenaBatteries can reliably deliver – even when metal resources for competing technologies are in short supply – safe, sustainable batteries of high quality and at predictable costs.


Philipp Hammans

Chief Executive Officer


Dr. Matthias R. Jacob

Chief Operating Officer


Dr. Tobias Janoschka

Chief Technology Officer /



Having studied chemistry (Dipl.) and economics (M. Sc.) at Jena University, he founded JenaBatteries GmbH with an interdisciplinary team of research scientists and economics experts in 2013. He won the Thuringian Research Prize, the IQ Innovation Prize, the Fund Scholarship of the German Chemical Industry Fund and the STIFT Prize for applied-oriented theses.

Dr. André Brosowski

Chief Sustainability Officer


Dr. Sven Gensler

Chief Finance Officer


What we stand for

Environmentally conscious action
Pioneering in the field of sustainable energy storage, we care for the environment. We acknowledge the impact of our business activities on the environment and are committed to act environmentally friendly. The company is committed to preventive measures (e. g. prefer train travel over car travel) and the use of environmentally friendly technologies (e. g. avoid emissions, save energy). Replacing battery metals by innovative sustainable non-metallic materials contributes to saving our natural resources.
We only promise what we can deliver. We consider transparency regarding our product features, electrical parameters and quality standards of highest importance. JenaBatteries strives to earn the unrestricted trust of its partners and regards all promises as an obligation. The company considers fairness in business partner relations to be the basis for mutual success. Our reliable employees accomplish projects efficient and in time, thus making their contribution to a successful conversion of the energy system.   
We are strongly committed to equal employment opportunities and compliance with all applicable laws that prohibit discrimination in the workplace, especially discrimination based on age, ethnicity, colour, gender, sexual orientation, gender identity, national origin, religion or disability. This applies to all actions, including hiring, training, job rotations, promotions, compensation, benefits, disciplinary action and termination. We strive for gender equality at all job levels and make sure we abide by the principles of the European Charter for Researchers and the Code of Conduct for the Recruitment of Researchers. JenaBatteries prohibits sexual harassment and other forms of harassment in the workplace. At JenaBatteries, we promote a diverse and inclusive workplace where we treat each other with respect and dignity.
Ethical business conduct

JenaBatteries follows the highest standards of integrity in all business areas, including fair business, fair advertising and fair competition. The company applies the relevant anti-corruption and anti-trust laws. All forms of bribery, corruption, extortion and embezzlement are prohibited. Only gifts customary in business and ethically unobjectionable are permitted. At JenaBatteries, we respect human rights and accept the United Nations Universal Declaration of Human Rights. Our metal-free battery technology fosters the prevention of human rights violations as mining under critical circumstances is not required.

We develop our products exclusively for civil purpose; the company does not produce for military use or military markets.


We cooperate with two strong, independent strategic partners, Wirthwein AG and Ranft Group.

In 2016, strategic investment replaced the initial venture capital. The family-owned Wirthwein AG and the Ranft Group took a stake in the company. Since then, both investors have supported our market entry and facilitated the start of serial production. They also advise on aligning technology with our business strategy. Their expertise in manufacturing and finance perfectly matches with our expertise in developing high-tech battery components and sales.  


Specialist company

JenaBatteries is a certified specialist company under the German Water Management Act (WHG). We are allowed to install, repair, decommission and clean redox flow batteries.


JenaBatteries Headquarters


JenaBatteries GmbH
Otto-Schott-Straße 15
07745 Jena

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JenaBatteries Production


JenaBatteries GmbH
Am Zementwerk 7
07745 Jena

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