120kW Hydrogen PEM Fuel Cell System for Heavy-Duty Power

High-power liquid-cooled PEM fuel cell system delivering 120kW for heavy-duty trucks, buses, construction equipment and industrial mobility. Designed for high-efficiency operation, rapid dynamic response and integration with 70MPa hydrogen infrastructure.

HYDRA-G 120kW Hydrogen Fuel Cell Advantages

Dynamic Load Response

•5.1kW/s load‑following •Smooth acceleration & hill‑climbing performance

Road‑Compliant Durability

•IP67‑rated
•MIL‑STD‑810G vibration‑validated
•Survives potholes, gravel, harsh braking

Simplified OEM Integration

•Compact liquid‑cooled package
•Fully integrated BoP
•Pre‑configured CAN bus
comms reduces OEM dev time

Cold Chain Resilience

•-30°C cold‑start
•Stable high‑temp operation
•Eliminates “range anxiety” in extreme climates

Precision Control for On‑Road Demands

HYDRA‑G 120kW is a responsive powertrain, not a static power source. Heavy‑duty vehicles require instantaneous power adjustments — idling at a traffic light or drawing maximum current on a highway on‑ramp.

⚡ Transient Performance

Manages rapid load shifts without voltage collapse, protecting vehicle electronics and ensuring consistent torque delivery.

🌡️ Thermal Management

High‑efficiency liquid cooling maintains optimal stack temperature during prolonged high‑power output, extending stack lifespan and reducing maintenance.

🛡️ Safety Interlocks

Multi‑layer safety protocols monitor hydrogen concentration, pressure differentials, and isolation resistance, ensuring ISO 26262 functional safety compliance.

Powering the Transition to Zero‑Emission Freight

Long‑Haul Heavy Trucks

650‑1000km range with 8‑20 minute refueling. Diesel‑like performance, zero emissions.

Transit Buses & Municipal Fleets

Zero‑emission public transport with rapid depot refueling and 61.25% peak efficiency.

Construction & Off‑Highway Machinery

MIL‑STD‑810G vibration compliance for demanding environments. -30°C cold start.

HYDRA‑G 120kW vs. Alternatives

Feature	HYDRA‑G 120kW	Leading alternatives	Diesel (Genset)	Li‑Ion ESS
Mass Power Density	510W/kg (system)	~400W/kg	Low (engine block)	<200W/kg (pack)
Peak Efficiency	61.25%	57%	40%	>90% (motor)
Dynamic Response	5.1kW/s	3kW/s	—	Instant
Operational Range	650‑1000km	500‑800km	800‑1200km	200‑400km
Refuel / Recharge	8‑20 min	8‑20 min	5‑15 min	1‑8 hours
Payload Impact	Low (light tanks)	Low	Medium	High (heavy batteries)
Cold Start	-30°C	-30°C	Requires pre‑heat	Limited below 0°C
Operating Temperature	-30°C to +55°C	—	—	0°C to +40°C
Maintenance	Low (no oil)	Low	High (oil/filters/DEF)	Medium (degrad.)
Stealth / Comfort	Silent / Low Vibration	Low Noise	Loud / High Vibration	Silent
Emissions	Zero (H₂O)	Zero (H₂O)	CO₂, NOx, PM	Grid‑dependent
Certification	CAERI	ISO/SAE	—	—
Protection	IP67 / MIL‑STD‑810G	IP6K9K	—	—

HYDRA‑G 120kW Specifications

Parameter	Value
Rated Power	120 kW
Peak Power	126 kW
Stack Technology	High‑Performance Composite Plates
Mass Power Density	510 W/kg
Peak Efficiency	61.25%
Dynamic Response	5.1 kW/s
Working Voltage	450V – 750V DC
Operating Temp	-30°C to +55°C
Hydrogen Pressure	70MPa CGH₂ Ready
Cooling Method	Liquid‑Cooled
Protection Rating	IP67
Vibration Standard	MIL‑STD‑810G Compliant
Certification	CAERI Type Approval

Frequently Asked Questions

Q: Why is 5.1kW/s dynamic response important for trucks?

A: 5.1kW/s dynamic response allows the fuel cell system to respond quickly to changes in vehicle power demand, supporting smooth acceleration, hill climbing and transient driving conditions.

Q: Is HYDRA‑G 120kW compatible with existing 70MPa refueling stations?

A: Yes. The system is designed for standard 70MPa CGH₂ infrastructure. We provide TPRD‑compliant interfaces for safe coupling.

Q: What is the difference between the HYDRA-G 120kW and 205kW hydrogen fuel cell systems?

A: 120kW is optimized for mobile applications (trucks/buses) with a focus on dynamic response and road vibration resistance. 205kW is optimized for stationary/marine use, focusing on maximum power density (702W/kg) and parallel scalability for MW‑level power.

Q: How does HYDRA-G 120kW TCO compare with diesel for fleet operations?

A: Total cost of ownership depends on hydrogen price, vehicle utilization, maintenance costs, infrastructure and local incentives. HYDRA-G can reduce maintenance requirements through an electric powertrain with no engine oil, conventional exhaust after-treatment or diesel fuel-system maintenance. Contact SOLIDHYDRO for an application-specific TCO assessment.

Power Your Heavy-Duty Fleet with 120kW Hydrogen

Talk to SOLIDHYDRO engineers about fuel cell integration, powertrain sizing, hydrogen supply and fleet applications.

Talk to SOLIDHYDRO

Need technical information, product specifications or application support? Contact our engineering team.