Hydrogen Trucking Viability: The Battle for Heavy Transport

The logistics industry is currently facing its biggest shift since the invention of the diesel engine. As governments globally enforce stricter zero-emission mandates, fleet operators must decide where to invest their capital. The central debate is not whether to move away from diesel, but which technology will replace it: hydrogen fuel cells (FCEVs) or battery electric vehicles (BEVs). While batteries have taken the lead in passenger cars, the physics and economics of heavy-duty trucking tell a different, more complex story.

The Case for Hydrogen in Long-Haul

Hydrogen fuel cell trucks create electricity on board by mixing stored hydrogen gas with oxygen from the air. This technology offers distinct advantages for the specific demands of long-haul trucking.

Rapid Refueling and Uptime

Time is money in logistics. A Class 8 battery-electric truck can take 90 minutes or more to recharge, even with high-speed chargers. In contrast, a hydrogen truck can refill its tanks in 15 to 20 minutes. This mirrors the current diesel experience, allowing drivers to get back on the road quickly without changing their operational shifts.

Solving the Weight Penalty

This is the single strongest business case for hydrogen. Batteries are heavy. To achieve a 500-mile range, a battery-electric truck requires a battery pack that can weigh upwards of 10,000 pounds. In the U.S., trucks have a maximum gross vehicle weight rating (GVWR) of 80,000 pounds (with a 2,000-pound allowance for zero-emission vehicles).

Every pound of battery is a pound of freight the operator cannot carry. Hydrogen tanks are significantly lighter than the battery equivalent for long distances. For carriers paid by the ton, hydrogen offers superior payload capacity compared to current battery technology.

Range Capabilities

Hydrogen excels at distance. Daimler Truck successfully tested its Mercedes-Benz GenH2 truck, covering 1,047 kilometers (650 miles) on a single tank of liquid hydrogen. This capability makes hydrogen the frontrunner for cross-country routes where stopping every 300 miles to charge is logistically impossible.

The Battery Electric Advantage: Efficiency and Cost

While hydrogen wins on weight and speed, battery electric trucks (BEVs) are winning on energy efficiency and infrastructure maturity.

The Efficiency Equation

The physics of energy transfer favors batteries. Charging a battery and using that energy to turn a motor is roughly 75% to 80% efficient from grid to wheel.

Hydrogen is far less efficient. You must use electricity to split water (electrolysis), compress or liquefy the gas, transport it to a station, pump it into a truck, and convert it back to electricity. The round-trip efficiency is often between 30% and 40%. This means a fleet operator pays for two to three times as much electricity to move a hydrogen truck the same distance as a battery truck.

Lower Fuel Costs

Because of the efficiency loss described above, hydrogen fuel is expensive. As of late 2023, prices at the pump in California were often seen exceeding $30 per kilogram. While the Department of Energy aims to reduce clean hydrogen costs to $1 per kilogram within a decade (the “1 1 1” goal), the current operational cost is significantly higher than electricity.

The Tesla Semi Factor

Tesla has disrupted the expectations for heavy transport. PepsiCo is currently running a fleet of Tesla Semis out of Sacramento, California. Real-world data indicates these trucks are achieving close to their stated 500-mile range on a single charge. If battery energy density improves by even 20% in the next five years, the “range anxiety” argument for hydrogen may weaken.

The Infrastructure Gap

Both technologies face a massive infrastructure hurdle, but the challenges are different.

• Grid Capacity: Charging thousands of electric trucks requires massive amounts of power. A truck stop serving 50 electric trucks simultaneously would require as much power as a small town. Utility companies warn that grid upgrades to support this could take a decade.
• Hydrogen Stations: There are virtually no public hydrogen fueling stations for trucks outside of select corridors in California and Europe. Building a hydrogen station is complex and capital-intensive, often costing between $2 million and $5 million per location.

Key Players and Market Split

The industry appears to be moving toward a split future rather than a winner-takes-all scenario.

• Daimler Truck and Volvo Group: These two giants formed a joint venture called cellcentric. They are betting on a dual strategy: batteries for shorter regional routes and hydrogen fuel cells for demanding long-haul transport.
• Nikola Motor: Despite corporate turbulence, Nikola is one of the few companies actually delivering hydrogen fuel cell trucks to customers in North America. They view hydrogen as the only viable solution for non-stop hauling.
• Toyota: Toyota continues to supply fuel cell modules to heavy-truck manufacturers like Kenworth, pushing the narrative that hydrogen is essential for heavy industry.

Conclusion

The viability of hydrogen trucking depends on the specific use case. For regional delivery, drayage (port to warehouse), and routes under 300 miles, battery electric trucks are already the superior economic choice due to lower fuel costs. However, for irregular routes, heavy payloads, and team-driving operations that run 20 hours a day, hydrogen remains the most practical zero-emission alternative to diesel.

Frequently Asked Questions

Is hydrogen trucking safer than diesel? Hydrogen is highly flammable, but tanks are built to withstand extreme impacts. In some ways, it is safer than liquid fuels because hydrogen is lighter than air; if a tank leaks, the gas rises and dissipates rapidly rather than pooling on the ground like diesel or gasoline.

How much does a hydrogen truck cost compared to a diesel truck? Currently, a hydrogen fuel cell truck can cost upwards of $400,000 to $600,000, which is roughly three times the cost of a standard diesel tractor. However, government incentives like the Inflation Reduction Act (IRA) in the US aim to bridge this gap.

Can existing diesel engines run on hydrogen? Yes. Companies like Cummins are developing internal combustion engines that burn hydrogen instead of diesel. This is different from fuel cell technology. It is cheaper to manufacture but slightly less efficient and still produces small amounts of nitrogen oxides (NOx), meaning it is not strictly “zero emission” in the same way a fuel cell is.

Who is the biggest competitor to hydrogen trucks? The biggest competitor is the improving energy density of batteries. If solid-state batteries become commercially viable, they could double the range of electric trucks without adding weight, potentially rendering hydrogen unnecessary for all but the most extreme routes.