Hystar AS, a leading provider of the world’s most efficient PEM electrolyzers, has announced a strategic collaboration with McDermott to develop a comprehensive 100-megawatt (MW) green H₂ plant design. This collaboration marks a significant milestone in Hystar’s mission to accelerate global deployment of its large-scale green H₂ solution.

Under the agreement, Hystar will provide its proprietary, high-efficiency and high-safety PEM electrolyzer technology. McDermott will leverage its extensive global expertise as an engineering, procurement and construction (EPC) provider for major energy infrastructure. With more than a century of engineering excellence, McDermott has delivered numerous large-scale H₂, ammonia, and low-carbon projects. Its portfolio includes pre-FEED, FEED and EPC execution for blue and green H₂ facilities, ammonia plants, H₂ hubs and modularized energy projects worldwide.

By combining Hystar’s game-changing electrolyzer technology with McDermott’s proven H₂ execution expertise, the companies will develop a full-facility reference design optimized for scalability, flexibility, safety and cost efficiency.

The 100-MW reference plant will serve as a blueprint for future commercial H₂ projects, enabling faster development and streamlined delivery for industries such as refineries, ammonia, steel, heavy transport and synthetic fuels. The collaboration aims to offer customers an integrated, ready-to-deploy plant architecture that reduces technical risk, simplifies procurement, and shortens time to market.

“This collaboration reflects our shared commitment to advancing the energy transition,” said Rob Shaul, McDermott’s Senior Vice President of Low Carbon Solutions. “By combining McDermott’s engineering and EPC expertise with Hystar’s innovative PEM technology, we’re creating a scalable solution to support future green H₂ projects.”

Fredrik Mowill, Hystar CEO said, “Working with McDermott ensures that Hystar’s leading PEM technology can be scaled efficiently and deployed worldwide through a proven EPCI framework.”

This collaboration further strengthens Hystar’s position as a leading technology provider and demonstrates its continued commitment to enabling the transition to cost-effective green H₂ worldwide.