ProH+ divides its electrolysis stacks into three power ranges for which fixed active area sizes have been defined. 

Low power range (up to 300 W per cell): 

This range includes our electrolysis test systems with active areas of 4 cm² and 25 cm². 

Here, the focus was on our electrolysis test systems for the testing and validation of materials. 

In addition, we were able to show in a prototype that we can compress hydrogen up to 30 bar with hydraulic compression, in this size range, and can extend this concept for stacks in this performance or size range (see electrochemical compressors).

Medium power range (up to 1 kW per cell): 

Our cells with active areas of 200 cm² (for PEM and AEM operation) fall into this range.

Here, too, our concept of hydraulic compression allows any number of cells to be connected electrically in series (process media in parallel), so that any power can be built up here. 

Prototypes have been built here and successfully tested and evaluated for research projects. Stacks of 50 to 100 cells appear realistic. Currently we are working on the transition to an industrial product. Please contact us for feedback on the development status.

Upper power range (up to 3.3 kW per cell): 

This range includes our cells with active areas of 500 cm² (for PEM and AEM operation).

Here, too, our concept of hydraulic compression allows any number of cells to be connected electrically in series (process media in parallel), so that any power can be built up here. 

Prototypes have been built here and successfully tested for research projects. Stacks of 50 to 100 cells appear realistic. Currently we are working on the transition to an industrial product. Please contact us for feedback on the development status.