The Nordic start-up has launched or announced multiple alkaline electrolyser modules since its establishment. In 2024, it unveiled its 25kW module and stated its intention to develop larger designs exceeding 250kW.

Anders Johansson, the company’s CEO, said the agreement with Uniper is a “strong endorsement” of Hymeth’s Hyaeon technology.

Uniper is expected to install the system in Malmö, where it operates the 448MW Öresundsverket gas-fired power plant.

While not yet confirmed, the 25kW alkaline electrolyser is likely to be deployed at the site, which has been reinstated as part of Sweden’s electricity preparedness system.

Integrating an electrolyser could allow Uniper to test how flexible hydrogen production can respond to grid conditions.

Mikael Nilsson, Plant Manager at Uniper, highlighted, “Hydrogen is important for achieving a climate-neutral energy system.” Uniper is targeting carbon-neutral power generation by 2040.

Nevertheless, the company did narrow its near-to-mid-term investment strategy in its H1 2025 report, amid delays in German power plant auctions and slow hydrogen ramp-up. Instead, it plans to refocus capital on renewables and gas-fired assets.