Somewhere between the Port of Oakland and a Central Valley warehouse, a 40-ton truck merges onto the interstate, indistinguishable from the diesel rigs around it except for one detail: the only thing coming out of its exhaust stack is water vapor. The truck is one of 30 hydrogen-powered Class 8 rigs now running daily freight routes across Northern California as part of the NorCAL ZERO project, a state-funded demonstration that represents the most ambitious real-world test of hydrogen trucking the United States has ever attempted.
A parallel fleet near the Port of Los Angeles is doing the same thing on Southern California freeways. Together, these programs are trying to answer a question the freight industry has debated for years: can hydrogen fuel cells replace diesel in the hardest vehicle segment to decarbonize, the 80,000-pound big rig?
Thirty trucks, two ports, and a growing fueling network
The NorCAL ZERO project, funded by the California Air Resources Board and the California Energy Commission, has deployed 30 Class 8 fuel cell electric trucks for regional and drayage operations in the San Francisco Bay Area and Central Valley. The trucks refuel at dedicated 700-bar hydrogen stations, and the entire fleet is designed to operate for roughly six years. The project’s stated target is to eliminate 100 percent of tailpipe greenhouse gas and criteria pollutant emissions from those vehicle operations over that span.
On the fueling side, FirstElement Fuel has expanded its True Zero hydrogen network with a heavy-duty-capable station in Oakland. In an announcement distributed via a national wire service, the company said the site is its 41st retail location and described hardware capable of delivering roughly 80 kilograms of hydrogen in under 10 minutes. That figure comes from the company’s own press materials; no independent test has confirmed this throughput under real-world queuing conditions, where multiple trucks may arrive at once and on-site storage must be replenished between fills. For a Class 8 drayage truck, 80 kilograms is a meaningful fill, enough to cover full shifts between the port and regional warehouses without a midday stop. The speed matters because downtime kills productivity in freight hauling. A truck that needs hours to recharge a battery loses revenue. One that refuels in minutes stays on the road…