- Construction is complete on the US$8.4–8.5 billion NEOM Green Hydrogen and Ammonia project, the world’s largest commercial scale green hydrogen facility.
- The plant is now in critical system commissioning, with commercial shipments of green ammonia scheduled to start in 2027 under a 30 year offtake deal with Air Products.
- Once fully operational, the complex will avoid around 5 million metric tons of CO₂ emissions a year while producing up to 1.2 million tons of green ammonia annually.
Construction is officially complete on the US$8.4–8.5 billion NEOM Green Hydrogen and Ammonia project in Saudi Arabia, developer ACWA Power confirmed in a mid-August 2026 announcement. The facility, described as the world’s largest commercial scale utility green hydrogen plant, has moved from active building into its critical system commissioning phase as engineers begin integrated testing of production assets and the transmission grid.
Located at Oxagon, the coastal industrial hub within the NEOM megacity development in northwestern Saudi Arabia, the complex is built around a dedicated renewable energy backbone. It is powered by 4 GW of onshore wind and solar capacity, combining 257 wind turbines with a large solar farm to supply clean electricity to the electrolysis process.
At the heart of the plant sits a 2.2 GW electrolyzer system designed to split desalinated water into carbon free hydrogen. The facility can produce up to 600 tons of green hydrogen per day, which is then combined with nitrogen to form up to 1.2 million tons of green ammonia a year for easier global shipping.
While structural completion marks a major milestone, commercial volumes are scheduled to begin shipping globally in 2027 after commissioning and optimization are concluded. All output will be sold exclusively to Air Products under a guaranteed 30 year offtake agreement, providing long term revenue certainty for the project.
When fully optimized, the plant is expected to prevent around 5 million metric tons of CO₂ emissions annually, reinforcing Saudi Arabia’s push to become a leading exporter of green hydrogen and ammonia as part of its broader energy transition strategy.
Author: Bryan Groenendaal
