Repsol, a global integrated energy group headquartered in Spain, has entered into an alliance with Estonian company Stargate Hydrogen, a European innovator specialising in next-generation alkaline electrolysers for efficient and cost-effective green hydrogen production.
“Repsol is the largest producer and consumer of hydrogen in Spain; therefore, it has extensive first-hand experience of the complexities of hydrogen projects,” said Marko Virkebau, CEO of Stargate Hydrogen.
The transaction, in which Repsol´s Corporate Venture arm acquired a minority stake (3,6%) in Stargate Hydrogen’s share capital, strengthens Stargate´s position as an international benchmark in technological leadership and competitiveness in the renewable hydrogen sector.
“We are delighted that this partnership will allow us to work together on multiple fronts, from R&D and product development to commercial deployment of Stargate’s innovative electrolyser technology,” added Virkebau.
Stargate Hydrogen scales R&D and manufacturing in 2025
Earlier in 2025, Stargate Hydrogen secured an €11 million Series A funding round and inaugurated its new factory. Leveraging this capital, the company scaled up its manufacturing capacity, significantly enhanced its internal testing capabilities, and initiated plans to forge strategic partnerships with leading players in the global green hydrogen ecosystem.
“We are delighted that this partnership will allow us to work together on multiple fronts, from R&D and product development to commercial deployment of Stargate’s innovative electrolyser technology.”
Marko Virkebau, CEO of Stargate Hydrogen
The integration of Repsol as an industry partner further builds on this momentum, supporting the continued expansion of manufacturing operations, accelerating research and development efforts, and strengthening commercial activities across Europe, the Middle East, and Asia.
Repsol supports Stargate’s scalable hydrogen tech
“Renewable hydrogen is essential to our decarbonisation roadmap. What we are looking for are innovative approaches to its production, enabling more efficient production. We have closely followed Stargate Hydrogen’s work in recent years and are confident that it can be a great ally for us to accelerate our renewable hydrogen developments,” said Gema García, Director of Open Innovation and Corporate Venturing at Repsol. By 2030, the group plans to reach between 600 MW and 700 MW of installed hydrogen capacity.
The companies share the same goal: significantly reducing the cost of renewable hydrogen production to accelerate the decarbonisation of heavy industries and enhance Europe’s energy independence in critical energy production technologies. Stargate Hydrogen´s current manufacturing capacity is 140 MW per year, which can be scaled up to 1GW+ with modest additional investments.
GOOD TO KNOW
- Stargate Hydrogen was founded in 2021 to make green hydrogen affordable for hard-to-decarbonise industries like steel, fertilisers, and chemicals.
- The company’s focus: improve electrolyser efficiency and cut costs using novel ceramic catalysts and patented stack design.
- With more than € 50M in funding from strong investors and IPCEI status, Stargate is scaling production to 140 MW annually.
- Stargate is one of the few electrolyser manufacturers recognised as IPCEI (Important Project of Common European Interest).
- The company’s customers include Fortum, Utilitas, ABB and many others across Europe, Turkey, the Middle East, and India.
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