What is the confirmed market size and growth trajectory for the global green hydrogen market?
The market was valued at USD 3.5 billion in 2025 and is projected to grow at a CAGR of 52% to USD 151.59 billion by 2035. PEM electrolysis holds the dominant technology share. Solar is the largest renewable electricity source. Chemical production — led by ammonia — is the largest application. Pipeline is the dominant distribution channel. Europe leads by regulatory investment commitment; Asia-Pacific is the fastest-growing production market.

How does the U.S. IRA Section 45V production tax credit reshape green hydrogen economics?
The IRA Section 45V clean hydrogen production tax credit — providing up to USD 3 per kilogram of green hydrogen produced over 10 years when meeting lifecycle emissions thresholds — reduces the cost gap between green hydrogen and grey hydrogen (produced at approximately USD 1 to USD 3 per kg) from approximately USD 3 to USD 8 per kg to a USD 0 to USD 4 per kg gap in qualifying U.S. projects. This credit makes U.S. green hydrogen projects bankable at commercial scale that would not be viable from private capital alone — directly enabling the wave of electrolyzer procurement and hydrogen plant investment now underway across the United States.

What makes ammonia the largest and most commercially immediate green hydrogen application?
Ammonia production — the Haber-Bosch synthesis requiring hydrogen and nitrogen feedstock — is the world’s largest single industrial hydrogen consumer, with approximately 70% of global ammonia directed to fertiliser production. Fertiliser manufacturers transitioning from grey to green hydrogen feedstock are the most commercially immediate large-scale green hydrogen buyers because their hydrogen consumption is continuous at scale, the process transition requires only feedstock substitution rather than plant redesign, and carbon-regulated markets create growing cost exposure from grey hydrogen’s CO₂ intensity. Green ammonia additionally functions as a hydrogen carrier for maritime fuel and long-duration energy storage.

Why is hydrogen-based DRI steel decarbonisation the highest-volume long-term green hydrogen application?
Hydrogen-based direct reduced iron steelmaking — where hydrogen replaces coking coal as the iron ore reduction agent, producing water instead of CO₂ — is the highest-volume non-chemical green hydrogen application. Each tonne of DRI steel requires approximately 55 kg of hydrogen, making a 2 million tonne steel plant a 110,000 tonne per year green hydrogen consumer — equivalent to approximately 550 MW of continuous electrolyzer operation. Steel is the world’s second-largest industrial CO₂ emitter with no credible decarbonisation pathway at scale other than hydrogen-based DRI.

How does the EU Hydrogen Strategy’s 20 million tonne 2030 target create structured market demand?
The EU’s Hydrogen Strategy targets 10 million tonnes of domestic green hydrogen production by 2030 and 10 million tonnes of imports annually — requiring approximately 100 GW of electrolyzer capacity and USD 320-430 billion of cumulative investment. The EU Emissions Trading System carbon price creates the cost differential between green and grey hydrogen that justifies the green premium in industrial procurement, while REPowerEU’s renewable energy acceleration provides the low-cost electricity feedstock making European green hydrogen projects economically viable.

What is the electrolyzer cost reduction trajectory that defines green hydrogen’s path to grey hydrogen cost parity?
Electrolyzer manufacturing scale-up is replicating solar PV’s cost reduction trajectory: from approximately USD 1,400/kW in 2022 toward USD 300/kW by 2030, driven by automated gigawatt-scale manufacturing line establishment, materials optimisation, and stack efficiency improvement. Each halving of electrolyzer capital cost reduces the levelised cost of green hydrogen by approximately 20% to 30%, with electrolyzer capital representing 35% to 50% of total green hydrogen production cost at current renewable electricity pricing.