HT-PEM Technology

Enabling decentralized hydrogen deblending, extraction and purification

Compare it to a sieve that is only permeable to hydrogen: When charged, the SIQENS stack transports hydrogen in the form of protons from the anode to the cathode.

H2 separation

H2 purification


Why does this matter? Most hydrogen solutions are only available for large scale plant designs. SIQENS Electrochemical Hydrogen Separation technology (EHS) unlocks local hydrogen production from renewable feedstock such as green methanol or biogas by purifying it to fuel cell grade quality. Or you can blend hydrogen into the gas grid and extract it at the point-of use.


Electrochemical Hydrogen Separation is uniquely suitable for separation and purification of H2

High purity

Purifies hydrogen
to fuel cell grade:
> 99.97%
ISO 14687:2019
SAE J2719-202003


90% less electricity
consumption compared
to water electrolysis:
2 – 5 kWhel/kg H2


Extraction from feed
gases with a wide range
of hydrogen content:
3 – 99%


Provides hydrogen on-
site even at small scale:
2 – 1000 kg/day

Hydrogen infrastructure

Addressing your challenges in last mile distribution and infrastructure of green hydrogen

Our Locations

Green hydrogen production

Using renewable electricity and water electrolysis

Hydrogen distribution

Road transportation, pipelines, and blending into the gas grid

Natural gas deblending


Separation of pure natural gas from H2/CH4-blends for hydrogen-sensitive customers

Gas network decarbonization


Extract H2 from the blended gas stream to reduce emissions from drive and compression turbines

Feedstock for green hydrogen

Hydrogen production via reforming of local biogas or renewable methanol

Hydrogen purification


Fuel cell grade hydrogen (> 99.97%) from reformate gas of biogas or renewable methanol

Hydrogen deblending


Extraction of pure hydrogen from H2/CH4-blends for direct use in commercial and mobility applications

Hydrogen refueling


Fuel cell grade hydrogen for small fleets of FCEVs, ranging from 2 – 1,000 kg H2 per day

Clean power generation

SIQENS Ecoport

Fuel cell energy for critical infrastructure: Using methanol as a hydrogen carrier

Hydrogen recycling


Extraction of H2 from industrial off-gases with a wide range of H2 content: 3–99%

Hydrogen blending in gas networks

Are you preparing to blend up to 20% of green hydrogen into your gas grid?

Your customers are not yet H2-ready and you are in need for applications of deblending at the point-of-use?

The SIQENS technology securely deblends hydrogen, separating fuel cell grade H2 and natural gas at the point-of-use. The modular scalable system has very low energy consumption and is thus an economical solution for decentralized applications.

DECENTRAL Deblending

Get in touch to prepare your
de-blending operations

Hydrogen refueling for mobility

Is availability and cost of green hydrogen slowing down the rollout of your commercial FCEVs?

Do you want to expand on the hydrogen refueling infrastructure making green hydrogen widely available for your vehicle fleet?

The SIQENS hydrogen refueling technology provides fuel cell grade green hydrogen from biogas or renewable methanol at the point-of-use. It can provide local green H2 from < 10 €/kg from 50 to 1,000 kg/day. This constitutes the fastest route to green hydrogen for vehicle fleets at 90 % lower electricity demand than electrolyzers.

The modular scalable system eliminates transportation of compressed hydrogen to the fuel station and provides commercial fuel cell vehicles with green hydrogen.

GREEN+DECENTRAL Fleet refueling

Green hydrogen as part of
your fleet fueling