Hydrogen.
Engineered.

Our first PEM stack assembly achieved stable proton conduction across 80 membrane-electrode assemblies at 0.8V cell voltage. Working in a 400 sq ft cleanroom, the Catalyst team proved that graphite bipolar plate geometry could be machined to ±15µm tolerances — the foundation every subsequent stack is built on.

The Series-A prototype stack delivered 200 kW continuous — enough to power a Class 8 truck at highway speed. Thermal management was solved through a proprietary coolant manifold design that keeps stack temperature within ±2°C across all 320 cells, eliminating the efficiency cliffs that plagued earlier architectures.

Fleet partners in the Ports of Long Beach and Houston deployed 47 Catalyst-powered Class 8 tractors on daily drayage cycles — 300+ miles per shift, back-to-back. The data returned something the models predicted but the market needed to see: total operating cost 23% below diesel at $4.20/kg H₂, and maintenance costs down 61% with no combustion components to service.

The GS-1000 module stacks four 250 kW units into a 1 MW footprint the size of a shipping container. Deployed at two Tier-1 data centers and three port authority backup systems, the GS-1000 has logged 99.9997% availability over 14 months — exceeding diesel generator SLAs without a single fuel delivery truck, without exhaust permitting, and without noise ordinance waivers.