Beijing Wltech adopts customized integrated solution of hydrogen production-storage-application with solar energy, builds a hydrogen electricity coupling system of "renewable energy + hydrogen + control", constructs distributed solar station according to local civil conditions, storage, configures customized intelligent DC micro grid combined with hydrogen energy, adopts the optimal economic operation strategy, generates and uses zero carbon green electricity, storages green hydrogen energy, assists industrial parks and urban and rural city transition to a zero carbon economy, contributes to achieve global carbon neutrality goals.