Dynelectro and the EIC Accelerator: A Longer-Lived Electrolyser

Dynelectro, founded in 2018 by Søren Højgaard Jensen and based in Viby Sjælland, Denmark, builds solid oxide electrolysers, which split steam into hydrogen at around 750°C and can convert up to 90% of the electricity into hydrogen, and it uses a patented method it calls AC:DC that briefly reverses the voltage on the cells to slow their wear. It was selected in the EIC Accelerator's June 2023 cut-off with blended finance and received an EU grant of €2.50 million for HiFiMet, an €11.52 million project to build a "1 MW Dynamic Electrolyser Unit for cost-efficient production of PtX-based green methanol", running from March 2024 to August 2026, according to CORDIS. In July 2024 it announced an €11 million round from EIFO, Yara Growth Ventures, Vsquared Ventures, PSV Deeptech, The Footprint Firm and the EIC Fund, to deploy the 1 MW unit "at European Energy's Danish renewable energy facility", according to Dynelectro.

The only public report, to May 2025, says the project went through "design, procurement and assembly of the 1 MW electrolyser unit" using stacks from SolydEra, with stack degradation below 0.1% per 1,000 hours and efficiency above 85% at full load in pre-validation tests, according to the CORDIS reporting page. The report no longer mentions methanol; it describes a model with Yara and Fremsyn to make renewable methane from biogas CO2. In February 2026 Dynelectro announced a 1 MW unit at tulip grower Rainbow Colors in Andijk, the Netherlands, rather than in Denmark, according to Dynelectro. Its about page says "a 1 MW system is under delivery".

Where Dynelectro Stands Now

Dynelectro's first customer unit, a 250 kW electrolyser, left Denmark in June 2026 for Syntholene Energy's synthetic aviation fuel demonstration at Húsavík, Iceland, after producing one tonne of hydrogen in factory acceptance testing, according to Dynelectro, and was ready for production less than two weeks later, according to Dynelectro. In September 2026 it reported a 25,000-hour test of a 70-cell SolydEra stack, published with Aalborg University and DTU in Nature Communications, which it calls the longest solid oxide electrolysis stack operation ever reported, according to Dynelectro.

The Technology: Solid Oxide That Lasts

Solid oxide electrolysis is more efficient than the alkaline and PEM electrolysers that dominate the market, because part of the energy can come from heat, but its stacks have degraded quickly, especially under the changing loads of wind and solar power. Dynelectro's test showed the stack voltage rising only 0.05% per 1,000 hours over 22,000 hours after start-up, one tenth of the EU's 2030 target, and the company says this gives a stack lifetime of 7 to 10 years.

What the EIC Award Promised, and What the Record Shows

The award promised a 1 MW electrolyser for green methanol production. Dynelectro designed and assembled the unit and validated its stack performance, but the public record shows no 1 MW system operating at a customer site by the time the project ended in August 2026, and the methanol use has given way to hydrogen for a Dutch grower and plans for renewable methane. There is no final report.

1. 1 MW unit designed and assembledDeliveredPer first report.
2. Low stack degradationDeliveredPeer-reviewed, 2026.
3. 1 MW unit in operationUnder deliveryAndijk, Netherlands.
4. Green methanol productionNot reportedUse case changed.

The Money

The EU grant covered 22% of the project. Dynelectro lost DKK 27.8 million in 2024 and DKK 28.0 million in 2025, and its cash fell from DKK 44.4 million to DKK 19.9 million, according to accounts filed with the Danish Business Authority. Equity was negative at DKK 24.4 million at the end of 2025. Management says equity will be restored when convertible loan notes convert and expects a capital increase in spring 2027. Staff rose from 10 in 2023 to 23 in 2025.

What Cannot Be Checked

Why Europe Should Care

Europe's hydrogen plans depend on electrolysers that use less electricity, and solid oxide technology offers the highest efficiency if its lifetime problem is solved. Dynelectro has peer-reviewed evidence that it can be, and its first customer unit is running. It has not yet shown the megawatt-scale product at a customer site.

The Verdict

Dynelectro and the EIC have not been asked for comment for this article. It is based entirely on public records and published statements, linked throughout.