This marks the start of Fortum’s long-term operational testing of hydrogen production at its Kalla Test Centre, a pilot-scale hydrogen production facility designed to test hydrogen technologies under real operating conditions. The site will serve as a platform for operational learning, technology validation and future project development through 2028.
Stargate Hydrogen’s electrolyser is one of two systems operating at the facility, placing Kalla among the first hydrogen sites in the Nordics to test multiple electrolyser technologies side by side.
The project represents a total investment of 20 million euros across construction and operational phases. Site preparation for the approximately 2 MW hydrogen production facility began in autumn 2024, and construction started in summer 2025. The first hydrogen was produced during commissioning in December 2025, and the site is expected to become fully operational during summer 2026.
For Stargate Hydrogen, the inauguration represents an important milestone. The successful deployment of the company’s electrolyser technology at Kalla demonstrates its readiness to support industrial applications and strategic energy projects across Europe.
“The inauguration of the Kalla Test Centre proves that Stargate Hydrogen has reached the maturity level required to be trusted by large industries” said Marko Virkebau, CEO of Stargate Hydrogen. “Delivering this project together with Fortum shows that our technology and our team are ready to support the growing hydrogen economy in the Nordics and beyond.”
Fortum has the Kalla Test Centre as the first step in building practical experience around hydrogen production and industrial decarbonisation.
“At Kalla, we are building the practical experience needed to develop hydrogen solutions” added Satu Sipola, Vice President, P2X & Project Execution at Fortum. “This step-by-step approach is essential to ensure both technical readiness and commercial viability, and Stargate Hydrogen demonstrated a high level of reliability and professionalism from start to finish.”
For additional information:
