Posted in | Hydrogen Equipment

Containerized PEM Hydrogen Generators: 246 to 492 Nm³/h

In sites where plant space is at a premium, customers may choose to install their electrolyzers outside. In other cases, customers may prefer to configure an electrolyzer for a more turnkey operation. To fulfill those requirements, Nel Hydrogen recommends containerization.

The M Series MC250 and MC500 units are supplied and placed in free-standing containers for ultimate flexibility.

Containerized M Series electrolyzers can generate up to 492 Nm3/hour of hydrogen gas at 99.9995% purity on-demand. Common applications include industrial process gas, renewable energy storage, and hydrogen fueling.


  • Pure hydrogen at process pressure – up to 30 barg (435 psig) hydrogen and 99.9995% purity
  • Cost-effective hydrogen supply – tracks electric costs
  • Increased safety – caustic chemicals are not used
  • Virtually zero stored hydrogen – removes the hazard of flooding the space
  • Large capacity with minimal footprint – only a fraction of space needed compared to storing large volumes of gas or liquid hydrogen
  • Dependable supply of hydrogen—field-proven reliability
  • Containerized design – versatile plant configurations
  • Automated – safe operation without manual involvement


Source: Nel Hydrogen

Specifications MC250 MC500
Net Production Rate 246 Nm3/h 492 Nm3/h
Production Capacity Dynamic Range 10 to 100% 10 to 100%
Average Power Consumption at Stack1 4.5 kWh/Nm3 4.5 kWh/Nm3
Purity – with optional high purity dryer 99.9995% 99.9995%
O2-Content in H2 <1 ppm v <1 ppm v
H2O-Content in H2 <5 ppm v <5 ppm v
Delivery Pressure 30 barg 30 barg


Electrolyser Container2 – W x D X H

Rectifier Transformer Container2 – W x D X H


12.2 m x 2.5 m x 3 m

6.1 m x 2.5 m x 2.6 m


12.2 m x 2.5 m x 3 m

Two: 6.1 m x 2.5 m x 2.6 m

Ambient Temperature -20 to 40 ⁰C -20 to 40 ⁰C
Electrolyte Proton Exchange
Proton Exchange
Feed Water Consumption 0.9 l/Nm3 0.9 l/Nm3


For reference only—specifications are subject to change. Customers can contact Nel Hydrogen for solutions that best fit their requirements.

1 Depends on configuration and operating conditions.

2 Plus vent and rooftop equipment, site specific.

Other Equipment by this Supplier