Technology and Performance.

HyET’s electrochemical hydrogen compressor (EHC) is capable of simultaneous silent compression and selective purification of hydrogen gas. Our technology can compress hydrogen up to 1000 bar in a single-stage, is highly effective and scalable to meet customer specifications. As our compressor has no moving parts, it is silent, reliable and low-maintenance. With our technology hydrogen can be compressed and purified in one step. All of this results in lower CAPEX and OPEX compared to conventional mechanical compression.


Electrochemical vs mechanical compressors

Electrochemical compressor

Mechanical compressor

CAPEX (€ [kg h2/day] 150-1500 2000
OPEX (€ [kg H2] < 1.0 1.5 - 2.0
Energy use (kWh/kg H2) < 4 6.6
Availability (%) 99+ 70

HyET broke the world record electrochemical compression and achieved 1000 bar in 2011 with a single stage laboratory cell.

PHAEDRUS final summary report (PDF)