Repsol acquires minority stake in Stargate Hydrogen

Repsol and Stargate Hydrogen have entered into an alliance in Spain. Repsol´s Corporate Venture arm has acquired a minority stake in Stargate Hydrogen’s share capital. The integration of Repsol as a partner will allow the company to boost its manufacturing capacity, speed up research and development initiatives, and strengthen its commercial operations across Europe, the Middle East, and Asia. 

The alliance aims to reduce the cost of renewable hydrogen production. Stargate Hydrogen achieved completion of its series A funding round, raising €11 million in equity investments from strategic customers and financial investors earlier in 2025. 

Earlier in June 2025, Stargate Hydrogen inaugurated its new factory, which is dedicated to the production of alkaline electrolysis stacks and systems in Estonia. In the first phase, the factory can deliver 140 MW of alkaline electrolysers annually. This can be increased to over 1 GW with the help of minor additional investments.