
Fuel cell stack modules
A fuel cell stack module is a stack of cells consisting of a large number of bipolar plates, membrane electrode assemblies (MEAs), seals, end plates, and the tensioning system. Stack modules from EKPO contain additional system functionalities that greatly simplify integration into customer systems and result in a compact design. A special media supply assembly usually integrates pressure and temperature sensors, valves, water separators for the anode circuit, and optional customer-specific functions.
- High power density due to lightweight, compact stack design
- Robust component and stack design suitable for mass production, with long service life and minimal power degradation
- Proven cold-start performance and durability
- System simplification by integration of functions at the media supply assembly of the stack (sensors, actuators and valves)
- Metallic bipolar plates in patented design
PEMFC stack module NM20
PEM stack module based on metallic bipolar plates with a nominal electrical output of up to 400 kWel.
Benefits
- Highest efficiency and durability
- Higher operating temperature to minimize cooling system
- Mass production technology enabling low costs
- Sustainable stack design offering high recycling rate
- Enhanced power density by more than 50 % in heavy-duty applications
- Freeze start ability below -30 °C
Parameters
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.8 bara
- IP6k9k / IP67 housing with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- System ready design: direct DC/DC connection and mechanical mounting points for compact BOP integration

Applications
Heavy-Duty
Rail
Marine
Electrolyzers
Power Generator
System Integrators
PEMFC stack module NM12-twin
The NM12-twin PEMFC stack module is available with a cell count of 598 cells (2x 299 cells). At 2.5 bara operating pressure it achieves a power output of up to 205 kWel.
Parameters
- Customer-specific stack solutions with power levels up to 205 kWel
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.5 bara
- IP (6KX, X6K, X7) housing1 with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- Stack module validated acc. to IEC 62282 and GB/T 33978
- Developed for compact stack and system design
Applications

Heavy-Duty
Rail
Marine
Electrolyzers
Power Generator
System Integrators
PEMFC stack module NM12-single
The NM12-single stack module is available with a stack configuration of 358 cells. At 2.5 bara operating pressure it achieves a power output of up to 123 kWel.
Parameters
- Customer-specific stack solutions with power levels up to 123 kWel
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.5 bara
- IP (6KX, X6K, X7) housing with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- Stack module validated acc. to IEC 62282 and GB/T 33978
Applications

Light Commercial Vehicles
Heavy-Duty
Rail
Bus
Off-Highway
System Integrators
PEMFC stack module NM5-evo
The NM5-evo PEMFC stack module is currently available with a cell count of up to 335 cells. At 2.5 bara operating pressure it achieves a power output of up to 76 kWel.
Parameters
- Customer-specific stack solutions with power levels up to 76 kWel
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.5 bara
- IP (6KX, X6K, X7) housing with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- Stack module validated acc. to IEC 62282 and GB/T 33978
Applications

Passenger Cars
Light Commercial Vehicles
System Integrators
Material Handling
PEMFC stack module NM20
PEM stack module based on metallic bipolar plates with a nominal electrical output of up to 400 kWel.
Benefits
- Highest efficiency and durability
- Higher operating temperature to minimize cooling system
- Mass production technology enabling low costs
- Sustainable stack design offering high recycling rate
- Enhanced power density by more than 50 % in heavy-duty applications
- Freeze start ability below -30 °C
Parameters
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.8 bara
- IP6k9k / IP67 housing with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- System ready design: direct DC/DC connection and mechanical mounting points for compact BOP integration

Applications
Heavy-Duty
Rail
Marine
Electrolyzers
Power Generator
System Integrators
PEMFC stack module NM12-twin
The NM12-twin PEMFC stack module is available with a cell count of 598 cells (2x 299 cells). At 2.5 bara operating pressure it achieves a power output of up to 205 kWel.
Parameters
- Customer-specific stack solutions with power levels up to 205 kWel
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.5 bara
- IP (6KX, X6K, X7) housing1 with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- Stack module validated acc. to IEC 62282 and GB/T 33978
- Developed for compact stack and system design
Applications

Heavy-Duty
Rail
Marine
Electrolyzers
Power Generator
System Integrators
PEMFC stack module NM12-single
The NM12-single stack module is available with a stack configuration of 358 cells. At 2.5 bara operating pressure it achieves a power output of up to 123 kWel.
Parameters
- Customer-specific stack solutions with power levels up to 123 kWel
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.5 bara
- IP (6KX, X6K, X7) housing with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- Stack module validated acc. to IEC 62282 and GB/T 33978
Applications

Light Commercial Vehicles
Heavy-Duty
Rail
Bus
Off-Highway
System Integrators
PEMFC stack module NM5-evo
The NM5-evo PEMFC stack module is currently available with a cell count of up to 335 cells. At 2.5 bara operating pressure it achieves a power output of up to 76 kWel.
Parameters
- Customer-specific stack solutions with power levels up to 76 kWel
- Hydrogen-air operation
- Liquid-cooled
- Pressurized operation up to 2.5 bara
- IP (6KX, X6K, X7) housing with EMC shielding
- Compact integrated cell voltage monitoring (CVM)
- Integrated media control, water separators and media monitoring
- Robust sensors and actuators acc. to automotive standards
- Stack module validated acc. to IEC 62282 and GB/T 33978
Applications

Passenger Cars
Light Commercial Vehicles
System Integrators
Material Handling
LATEST NEWS

Driving Hydrogen Innovation – Review of the EKPO Tech Day: On November 4 and 5, EKPO focused entirely on demonstrating the success and potential of hydrogen mobility applications.
The heart of hydrogen mobility: EKPO showcases its high-performance NM12-single stack for automotive applications at IAA Mobility

Bipolar plates
In addition to complete stack modules, EKPO offers comprehensive expertise in plastic injection molding and coating technology. Our metal bipolar plates are manufactured in fully automated production processes and offer a functional plate design tailored to your needs.

Hydrogen technology
Why hydrogen is considered as one of the energy sources of the future.

Trade Fairs & Events
See our stack modules in action and get to know our fuel cell experts.

Bipolar plates
In addition to complete stack modules, EKPO offers comprehensive expertise in plastic injection molding and coating technology. Our metal bipolar plates are manufactured in fully automated production processes and offer a functional plate design tailored to your needs.

Hydrogen technology
Why hydrogen is considered as one of the energy sources of the future.

Trade Fairs & Events
See our stack modules in action and get to know our fuel cell experts.







