Dynelectro’s 250 kW electrolyser completes 1000 hrs of operation in Iceland

The achievement marks the completion of phase one of the operating programme and represents an important step towards the commercial deployment of high-temperature solid oxide electrolysis technology.

The dynamic electrolyser unit (DEU) was commissioned and producing hydrogen within ten days of arriving in Iceland and has since operated continuously whilst integrated with Syntholene’s geothermal heat infrastructure. Since its first hydrogen production during factory acceptance testing in Denmark, the DEU has produced more than six t of hydrogen.

At the heart of the system are SolydEra G8X solid oxide stacks, integrated by Dynelectro into its turnkey electrolyser platform.

From technology to industrial deployment

The Húsavík project brings together three complementary areas of expertise: Syntholene’s geothermal and thermal integration, SolydEra’s industrial solid oxide stack technology and Dynelectro’s system integration, power electronics, and dynamic AC:DC control technology.

Dynelectro’s patented dynamic AC:DC technology actively manages the electrical conditions applied to the stacks with the objective of supporting stable operation and reducing degradation under dynamic operating conditions.

The combination is designed to address one of the key challenges facing high-temperature electrolysis: bringing together efficiency, durability, and flexible operation in a solution capable of moving towards industrial scale.

“Húsavík proves a complete, repeat-module solid oxide electrolysis cell (SOEC) electrolyser platform. This is the same DEU design we will scale into MW-class commercial plants and seeing it commission in days and then run without intervention is exactly the validation we need before we do that at scale,” said Sune Lilbæk, CEO of Dynelectro.

For SolydEra, the installation provides an important opportunity to validate its latest G8X stack platform in a real electrolysis application.

Alexander Liberov, CEO of SolydEra, stated: “Husavik is an important milestone for our G8X platform, as it represents its first deployment in electrolysis operation. SolydEra’s role in the project is to provide the solid oxide stack technology that Dynelectro integrates into its DEU. The operating experience being generated in Iceland provides valuable validation for our G8X stack platform in a real industrial application.”

Building the case for scalable SOEC

High-temperature solid oxide electrolysis can use steam and available process heat to reduce the amount of electricity required for hydrogen production, creating significant potential for industrial applications where heat integration is available.

The Húsavík installation provides a real-world environment in which these benefits can be evaluated together with system durability, operational flexibility, and performance.

With phase one now completed, the programme is moving into phase two, which will focus on operation at higher loads, including sustained operation at or near full available power.

Further data will be collected on electrical efficiency, hydrogen production, thermal integration, and system stability. Syntholene intends for the combined datasets to undergo independent third-party validation and support further engineering optimisation, techno-economic analysis, and future commercial-scale projects.

“This is precisely the type of operating evidence the SOEC sector needs. Moving from efficient cells to bankable industrial assets requires proven stacks, intelligent control, rapid commissioning, and stable operation in a real process environment. That is what the Húsavík programme is now demonstrating,” commented Sune Lilbæk, CEO of Dynelectro.

The project also reflects SolydEra’s strategy of working with industrial partners and system integrators to bring its stack technology into a growing range of commercial applications.

“Projects like Húsavík reflect the way we want to bring our technology to market: working with strong partners who integrate our stack platform into their own solutions and system architectures. For SolydEra, these industrial partnerships are key to expanding the deployment of our technology across different applications and markets,” said Dr Alexander Liberov, CEO of SolydEra.

Read the article online at: https://www.globalhydrogenreview.com/hydrogen/07102026/dynelectros-250-kw-electrolyser-completes-1000-hrs-of-operation-in-iceland/