Infinity high-pressure PEM electrolyzers have been developed for integration into XStorra® regenerative fuel cell systems or other applications requiring hydrogen fuel. Employing Infinity’s patented all-bonded metal cell structure concept, stacks have been developed to generate hydrogen at greater than 2,000 psi (138 bar). Stacks are designed for differential pressure operation with oxygen generation at ambient pressure for safety and simplification of the balance of plant.