en.Wedoany.com Reported - Syntholene Energy Corp.'s solid oxide electrolyzer cell (SOEC) demonstration plant in Husavik, Iceland, has produced its first 500 kg of green electrolytic hydrogen. The plant operates in conjunction with a geothermal heat source, and preliminary test data show hydrogen purity exceeding 99.9%, consistent with the equipment's design specifications.
Syntholene CEO Dan Sutton stated that the successful hydrogen production from the thermally coupled SOEC system confirms that the entire facility is operating in line with design standards, and all current commissioning work has been completed. In the coming months, the company will focus on long-term operational testing and commission a third-party organization to independently verify the system's overall performance.
Based on the demonstration plant's trial operation data, the company assesses that the power consumption of the electrolyzer stacks and the entire system aligns with the manufacturer's technical parameters: approximately 33.5 kWh per kilogram of hydrogen for a single electrolyzer stack, and a total system consumption of approximately 37.8-40.0 kWh per kilogram of hydrogen. These preliminary observed values still require confirmation through sustained operational testing and independent third-party verification.
The company has now initiated continuous operation testing of the demonstration plant to continuously evaluate electrolyzer stack performance, system energy efficiency, thermal coupling effectiveness, equipment stability, and project operational economics under long-term conditions. The test data will be used for subsequent engineering optimization, commercial project development, financing advancement, and strategic partnership implementation. Syntholene plans to release a full set of third-party independently verified performance data in the fourth quarter of 2026.
The demonstration plant aims to validate an integrated solution combining geothermal heat sources with high-temperature electrolysis technology to create a low-cost hydrogen production pathway, supplying feedstock hydrogen for synthetic fuel production. Data from the International Energy Agency (IEA) indicates that hydrogen is the primary cost driver in synthetic aviation fuel production, making low-cost hydrogen production crucial for the market price competitiveness of synthetic fuels.
Syntholene is advancing the commercialization of its proprietary innovative thermally coupled integrated production system, with its flagship product being ultra-high-purity synthetic aviation kerosene, targeting a 70% reduction in production costs compared to current mainstream competing technologies. The company operates the world's first geothermal-coupled high-temperature electrolysis demonstration plant in Husavik, Iceland, which is now stably producing high-purity hydrogen.
