There are different types of electrolyzers. The three main types are described as:
polymer electrolyte membrane (PEM). This is also referred to as a proton-exchange membrane.
alkaline electrolyzers (AE), which include alkaline-water electrolyzers (AWE).
solid oxide electrolysis cells (SEOC)
Our patented eDynamic electrolyzer utilizes membrane based, advanced alkaline technology that incorporates anion exchange membranes.  The electrolyzer is designed to run at high current densities within a wide dynamic range.
The different types have distinct combinations of characteristics, and choosing which to adopt involves balancing tradeoffs.
Ours is the only electrolyzer that is at once very low CapEx, very high current density, and operates across a wide dynamic range so that plant managers can easily adjust production rates depending on energy price, green energy availability, and/or demand for hydrogen.