Horizon subsidiary HET Hydrogen has delivered what it claims to be the world's first 5 MW electrolysis system based on anion exchange membrane technology (AEM) to the industrial park of Rockcheck Steel in Tianjin. Horizon describes the delivery as a milestone on the path to commercializing AEM products at the megawatt scale. The system, designated HET-A1000, was introduced by the company at the end of 2024. According to Horizon, it is characterized by low power consumption, a wide operating range, rapid dynamic response, and the use of cost-effective materials.
Integrated system of photovoltaics, electrolysis, and blast furnaceHorizon secured the first deployment in early 2025 with Tianjin Zhonghe Energy Management, a subsidiary of the Rockcheck Steel Group. According to Horizon, the "Low-Carbon Smelting Project Using Green Hydrogen" will create the world's first integrated system combining photovoltaics, AEM hydrogen production, and hydrogen-enriched blast furnace smelting.
Hydrogen production from locally generated solar power
A new building-integrated photovoltaic system (BIPV) with 17 MW is to be constructed in the industrial area. This will supply two 5 MW AEM electrolysis systems, each expected to produce 1,000 m3 i.N. of green hydrogen per hour. The hydrogen is to be used in Rockcheck Steel's blast furnaces to enrich them, reducing coal consumption and CO2 emissions. Horizon is currently working with the customer on commissioning the facilities.
Scaling as a test for AEM technologyWith the deployment of the 5 MW AEM system, Horizon aims to demonstrate the scalability of the technology. The hydrogen industry has long faced the challenge of validating promising technologies without a clear path to scale effects, according to the company. The modular systems are intended to offer a scalable approach for hydrogen metallurgy as well as for the decarbonization of heavy industry, chemicals, and transportation. Horizon intends to further increase the performance of the AEM electrolysis systems and optimize costs.
