Project overview
Objectives, scope, and technical context.
The WILO H2 Powerplant is one of the most advanced and sustainable hydrogen solutions for decentralized energy supply. The plant uses electricity from renewable sources such as photovoltaics and wind power to produce green hydrogen through electrolysis. The hydrogen is available for a range of applications.
A key component of the system is the storage of the produced hydrogen. It serves as an energy carrier for later reconversion to electricity via a fuel cell, for supplying a hydrogen refueling station, and for further energy applications within the overall concept. The goal of the project was to make renewable energy flexibly storable and enable comprehensive use of the energy generated.
The engineered solution
Technical, operational, and infrastructural.
VAKO developed and manufactured a hydrogen storage vessel for the stationary storage of the hydrogen produced at the WILO H2 Powerplant.
The vessel enables the safe stockpiling of the energy carrier and creates the flexibility needed between production, storage, and use. The storage solution is an integral part of the overall system and supports the efficient use of renewable energy. It supplies the fuel cell and other consumers and helps buffer surplus energy as needed, making it available with a time delay.
The challenge
Technical and regulatory core requirements.
For the reliable storage of hydrogen, high standards in safety, operational availability, and system integration had to be met. The storage solution needed to support continuous electrolysis operation while ensuring a demand-based supply to the connected consumers.
Particular importance was placed on designing the system for stationary applications with variable load profiles. Attention to detail was needed for the pressure vessel technology, hydrogen compatibility of the materials used, and integration into the overarching energy and load management system.
VAKO’s contribution
Engineering and fabrication – all from VAKO.
VAKO was responsible for the development and production of the hydrogen storage vessels for the project. From the technical design through structural implementation to quality-assured manufacturing, VAKO delivered a storage solution tailored to the requirements of the WILO H2 Powerplant. The result is a durable and reliable storage system that makes a significant contribution to a sustainable energy supply.
Results and added value
Reliable performance and long-term benefits.
The WILO H2 Powerplant represents a forward-looking energy system that combines renewable power generation, hydrogen production, and energy storage. The plant demonstrates how green hydrogen can be integrated into the energy supply–flexibly and efficiently.
The VAKO storage vessels contribute to the system’s supply security and flexibility. Through the reliable storage of the produced hydrogen, the project supports the sustainable use of renewable energy and serves as an example of the successful implementation of state-of-the-art hydrogen technologies.
