Fourier designs hydrogen electrolyzer modules no larger than two standard server racks, using arrays of small "blade" electrolyzers managed by software. Each module contains about 20 blades fed by a shared pump and powered by lightly modified, commodity data‑center power supplies. The company’s control software monitors individual blades similar to a battery management system, optimizing output and detecting degradation. Fourier has run two lab‑scale pilots that produce about one kilogram of hydrogen per hour with a pharmaceutical manufacturer and a solar energy company. It is deploying two commercial‑scale pilot plants—one at a petrochemical plant in Ohio and another at a Fremont, California aerospace parts company—expected to be operating by June. Fourier targets customers that need 6–20 kilograms per hour (roughly 300 kW to 1 MW of capacity). The company says it can deliver hydrogen for $6–$7 per kilogram (ex‑incentives) versus customer current prices of about $13–$14 per kilogram.

Total raised

$19M

Funding rounds

1

Latest round

Series A

Latest activity

Apr 2025