Fourier, a hydrogen production systems company based in Palo Alto, California, has raised $18.5 million in Series A funding.

The round was led by Airbus Ventures. The newly secured capital will support the expansion of Fourier’s engineering initiatives, particularly to integrate its technology into key energy infrastructure.

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Founded by CEO Siva Yellamraju and Ali-Amir Aldan, Fourier employs a modular approach that lowers upfront costs, streamlines deployment, and allows for scalable growth as demand increases. Central to its innovation is a highly modular, software-defined system architecture that optimizes performance in real-time.