Green Energy Storage (GES), an Italian innovative company in the field of green energy storage, and engineering consultancy, inspection and certification group RINA, have signed a framework agreement for the development of a hydrogen battery designed by GES.
The first prototype is expected to be unveiled in December 2025. This new generation of batteries is based on a hybrid hydrogen/liquid technology using a manganese-based liquid electrolyte. The cell integrates hydrogen production and reabsorption in a closed cycle, eliminating the need for external tanks.
Key technical features of the battery include:
- Green chemistry: abundant active materials (manganese), non-toxic, recyclable, and with a low environmental footprint;
- Modularity and scalability: independent energy and power components, expandable up to the MegaWatt (MW) scale.
This technology offers long lifespan and reliable performance. Its estimated lifecycle exceeds 12,000 cycles – equivalent to around 15–20 years of use – thus ensuring significant cost optimisation (LCOS) and a reduction in the volume of materials required compared to conventional flow batteries.
The system incorporates advanced hardware and software components: in-house production of membranes and catalysts ensures direct control over quality and efficiency, while the integration of AI-enabled sensors, machine learning algorithms, and an advanced Battery Management System (BMS) is designed to guarantee maximum operational safety, predictive diagnostics, and seamless integration with hybrid systems.
The project is part of the IPCEI (“Important Projects of Common European Interest”) funded by the European Union under NextGenerationEU. For this initiative, GES received €61.5m in funding, covering approximately 98.5% of the total costs of the project.
The agreement marks the beginning of a strategic journey that will support GES in moving from a laboratory-scale prototype to a market-ready product, with RINA actively involved in several stages. Specifically, RINA will be responsible for technology validation – ensuring the solution meets its standards of reliability and performance – and for the engineering optimisation of the system to make it efficient, scalable, and compliant with applicable regulations. In addition, leveraging its experience in supporting businesses in market entry, RINA will assist GES in defining its go-to-market strategy, facilitating the commercialisation of the technology.
Matteo Mazzotta, GES CEO, said: “This partnership is a key milestone in accelerating the development of our technology. RINA’s contribution, with its international experience and strong engineering and regulatory expertise, not only strengthens the technical soundness of our project but also confirms its value in view of future industrialisation.”
Michele Budetta, CEO RINA Consulting, added: “We are delighted to support GES in the development of such an innovative and promising technology. Our role will be to guide GES from the laboratory to the market, helping to make this solution technologically robust, regulatory-compliant, and ready to meet the energy challenges of the future.”
Image: Development of hydrogen battery by RINA and GES (source: RINA)
