Dynelectro Dispatches 250 kW Dynamic Electrolyser Unit to Syntholene’s Iceland

Dynelectro ApS has dispatched its first 250 kW Dynamic Electrolyser Unit (DEU) to Syntholene Energy’s electro-Sustainable Aviation Fuel (eSAF) demonstration project in Húsavík, Iceland.
The deployment marks an important milestone for electrolyser OEM Dynelectro, as the company transitions from factory validation to customer-site operation of its high-temperature SOEC electrolyser technology.
While SOEC technology is known for its industry-leading system efficiency of up to 90% conversion of electricity into hydrogen, Dynelectro’s proprietary AC:DC technology enables dynamic 0–100% load operation within seconds and an unprecedented SOEC stack lifetime of 7–10 years. This removes a key trade-off traditionally faced by project developers between electrolyser flexibility, efficiency, and stack lifetime.
Prior to shipment, the electrolyser successfully completed Factory Acceptance Testing (FAT) at Eltronic PtX’s assembly site and, during commissioning and validation activities, produced one tonne of hydrogen. The system incorporates SolydEra’s G8X stacks and is designed to support industrial Power-to-X applications, including e-fuels, methanol, ammonia, and sustainable aviation fuel.
“This deployment represents an important step in proving our proprietary SOEC electrolysis solution under real operating conditions,” said Sune Lilbaek, CEO of Dynelectro. “Our objective is to enable the world’s lowest available levelized cost of hydrogen while demonstrating the capabilities of the modular system architecture and execution model required for future MW-scale deployments.”
Dynelectro’s DEU is supported by several European technology and industrial partners. Notably, Eltronic PtX contributed design-for-manufacturing (DFM), assembly, and FAT services, while SolydEra supplied the large G8X solid oxide stacks used in the unit. Syntholene Energy is developing the eSAF demonstration project, which aims to integrate geothermal heat with high-temperature electrolysis for synthetic aviation fuel production.
The deployment is expected to generate valuable operational data to support the future optimization and scale-up of Dynelectro’s Dynamic Electrolyser Unit platform, as well as broader commercial Power-to-X deployments.
Following its arrival in Iceland, the 250 kW Dynamic Electrolyser Unit will enter the commissioning phase, with first operation expected before the end of June 2026.

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