© Craig Knight/LinkedIn
HET Hydrogen’s containerised system was delivered to the undisclosed site and is due to be commissioned “over the coming weeks.”
H2 View understands the unit will be installed at a customer site to replace merchant-supplied grey hydrogen.
The scale of the unit is significant. AEM electrolysers have remained limited to smaller-scale deployments.
AEM is pitched as a low-capital electrolyser alternative that can achieve the flexibility and small footprint of PEM systems without the use of precious metals or PFAS materials. But the technology remains limited by its susceptibility to degradation by avoiding those materials.
However, Horizon claims its AEM electrolyser has an expected life of 35,000 hours – on par with some PEM systems. It also offers a refurbishment plant for “up to 20 years of operations.”
The system also offers a cold start-up time of under 30 minutes, with an operating range of 10% to 110% of nominal load.
In a LinkedIn post, HET’s co-founder, Craig Knight, claimed, “Alkaline and PEM electrolysers have plenty to fear from this new technology.
“The HET AEM platform embodies the almost unbelievable triple benefits of low-capex, low-opex, and long-service life.”
HET also develops PEM technologies. In 2024, the firm announced plans to build a gigawatt-capacity electrolyser in India.
The company’s AEM systems are also expected to be deployed at a Chinese steelworks this year. In August 2025, Horizon said would be installed at Tianjin-based Rockcheck Steel’s facility to produce hydrogen for injection into its blast furnace
