1. Low-cost Supply of Green Hydrogen Using Renewable Energy
To promote the wider use of green hydrogen produced using renewable energy such as wind and photovoltaics, Hitachi is developing a technique for hydrogen production that connects to the grid. This involves optimizing the configuration of the power control equipment and how the electrolysis systems are connected as well as the development of operational control techniques based on tiered control in order to achieve highly efficient production of hydrogen using curtailed power and variable grid-connected renewable energy. Hitachi has also been conducting tests on a virtual plant that models the behavior of wind and other generation plant and incorporates a physical model of the electrolysis process to devise a scalable green hydrogen production system suitable for use across distributed sites as well as at large electricity sites.
Through initiatives that include collaboration between industry, academia, and government on demonstration projects for hydrogen-using green energy systems like this, Hitachi is working toward the production of green hydrogen at the low cost of 30 yen/m3 or less and the wider adoption of hydrogen in Japan and elsewhere.
[01]Tiered control and scalable design of grid-linked electrolyzers