Proton OnSite, the US subsidiary of Nel ASA, has received combined purchase orders for electrolyser cell stacks from United Technologies Aerospace Systems (UTAS) for the US and UK submarine fleets, at a value of more than $2.34m.

The electrolyser stacks produce critical life support oxygen (O2) for Navy crews on multiple classes of nuclear powered submarines and will be delivered under an exclusive contract.

“We are very proud to work with our partner UTAS and the Navy customers for our cell stacks. These new orders demonstrate the continuing success of our world class manufacturing and quality systems, as well as the robustness of our industry leading PEM technology that is delivering mission critical oxygen to the sailors onboard these Navy submarine fleets,” said Steve Szymanski, Director Project and Government Business Development for Nel.

The purchase orders, valued at more than $2.3m, will be part of an exclusive contract with UTAS, and follows Proton’s long history of supplying PEM electrolyser stacks for the production of critical life sustaining oxygen on board Navy submarines for over a decade. The cell stack technology jointly developed by Proton and UTAS for their Navy customers has also been integrated into commercial electrolysers under Proton’s C Series® product line.