Hydrogen energy is an important choice for future energy transition, with the advantages of high energy density, zero emission, etc. In order to promote the sound, orderly and sustainable development of the hydrogen energy industry, XJ, based on large-scale new energy hydrogen production, utilization of industrial residual hydrogen, integrated energy station, hydrogen energy storage and other scenarios, has developed core products such as source-grid-load-hydrogen-storage coordinated control system, hydrogen production monitoring system and hydrogen production power supply, and created overall solutions for large-scale hydrogen production from new energy sources, industrial by-product hydrogen, hydrogen-electricity coupling, etc. to provide one-stop technical services. In terms of application performance, XJ has participated in demonstration projects such as the first off-grid PV seawater hydrogen production in China, residual hydrogen cogeneration of Kaiyuan Chemical Co., Ltd., Henan Energy and electricity-hydrogen coupling grid connection empirical platform of Ningxia Electric Power Research Institute.