State of Green Hydrogen in Industry 2026
Green hydrogen has been promised as the clean fuel for the parts of industry that electricity cannot reach — high-temperature heat, fertiliser feedstock and primary steel. In 2026 the picture is sobering: electrolyser capacity is real but small, almost all hydrogen used today is still made from unabated fossil fuels, and the project pipeline for the end of the decade has been quietly trimmed. This report pulls together the public numbers on where green hydrogen in industry actually stands and why the ramp is slower than the targets implied.
Less than one percent of hydrogen is low-emission today
Source: IEA — Global Hydrogen Review 2025 — Executive summary (2025)
The world produced almost 100 megatonnes of hydrogen in 2024, but less than 1% of it came from low-emission routes such as electrolysis or fossil production with carbon capture. Hydrogen is already a large industrial commodity — it is used at scale in refining and in ammonia for fertiliser — yet that demand is met almost entirely by unabated natural gas and coal. The decarbonisation task is therefore not to invent a new market but to swap the production method underneath an existing one, which is why cost rather than demand is the binding constraint.
Electrolyser capacity is real but still small
Source: IEA — Global Hydrogen Review 2025 — Production prospects to 2030 (2025)
Installed water-electrolysis capacity reached about 2 gigawatts worldwide in 2024, with more than another gigawatt added through mid-2025. The deeper signal is in manufacturing: global electrolyser production capacity stood near 38 gigawatts a year in 2024 and is set to expand toward 186 gigawatts a year by 2030 on announced plans. That manufacturing build-out matters more than today's deployed fleet, because it sets the ceiling on how fast green hydrogen can scale once project economics turn — and it is heavily concentrated, with China holding the majority share.
The 2030 pipeline has been trimmed, and analysts disagree on cost
Source: IEA — Global Hydrogen Review 2025 — Production highlights (2025)
A year is a long time in this market. Low-emission hydrogen production achievable from announced projects by 2030 fell to about 37 megatonnes a year, down from the roughly 49 megatonnes a year projected only a year earlier — with stalled electrolysis projects responsible for more than 80% of the cut. The reason is cost: cheaper natural gas and dearer-than-expected electrolysers have widened, not narrowed, the near-term gap to fossil hydrogen. Analysts agree the gap exists but disagree sharply on when it closes — the IEA notes China can already make renewable hydrogen 40–45% cheaper than Europe or the United States and could reach competitiveness by the decade's end, while costs elsewhere remain well above fossil parity without subsidy.
Green, blue and grey hydrogen: cost vs carbon in 2026
| Type | Cost (USD/kg) | CO₂ (kg per kg H₂) | How it is made |
|---|---|---|---|
| Grey | 1.5–2.5 | 9–13.7 | Steam-methane reforming, no capture |
| Blue | 2.0–3.5 | 1.2–4.6 | SMR + carbon capture (CCS) |
| Green | 3.5–6.0 | 0.7–1.7 | Electrolysis from renewable power |
Source: IEA / IRENA — Global Hydrogen Review 2025 & hydrogen cost analysis (2025)
Grey hydrogen — steam-methane reforming with no capture — is still the cheapest at USD 1.5–2.5/kg, but it emits 9–13.7 kg of CO₂ for every kilogram of hydrogen. Blue hydrogen bolts on carbon capture, cutting emissions to roughly 1.2–4.6 kg/kg while raising cost to USD 2–3.5/kg. Green hydrogen, made by electrolysis from renewable electricity, is the cleanest at 0.7–1.7 kg CO₂/kg but the most expensive today at USD 3.5–6/kg — the cost gap, not the carbon case, is what holds it back.
Green hydrogen cost is projected to fall steeply by 2030
Source: BloombergNEF / McKinsey — Green hydrogen cost outlook (2025)
Most analysts expect the levelised cost of green hydrogen to drop sharply as renewable electricity and electrolysers get cheaper. McKinsey projects USD 1.3–2.3/kg by 2030, and BloombergNEF sees costs falling about 85% to below USD 1/kg in the best renewable markets by 2050. Cost parity with grey hydrogen is the threshold most industrial buyers are waiting for before switching.
FAQ
What is green hydrogen used for in industry?
The main industrial uses are existing hydrogen demand that today is met by fossil fuels — ammonia for fertiliser and refining are the largest — plus emerging uses such as direct-reduced iron for steel and high-temperature process heat. Switching these from unabated fossil hydrogen to electrolytic green hydrogen is the core decarbonisation case, since the demand already exists.
Why is green hydrogen scaling slower than expected?
Cost is the binding constraint. Cheaper natural gas and higher-than-forecast electrolyser prices have widened the gap to fossil-based hydrogen, so the production achievable from announced projects by 2030 was revised down to about 37 megatonnes a year from roughly 49 a year earlier. China is the clear cost leader; most other regions need subsidy or carbon pricing to compete.
Is green hydrogen cheaper than grey hydrogen?
No. In 2026 green hydrogen costs about USD 3.5–6/kg versus USD 1.5–2.5/kg for grey. The gap is expected to narrow as renewable power and electrolysers get cheaper — McKinsey projects USD 1.3–2.3/kg green hydrogen by 2030.
How much CO₂ does grey hydrogen emit?
Grey hydrogen emits 9–13.7 kg of CO₂ for every kilogram of hydrogen because it is made by steam-methane reforming without carbon capture. Green hydrogen emits only 0.7–1.7 kg/kg.
What share of global hydrogen is low-emission?
Less than 1%. The IEA's Global Hydrogen Review 2025 puts low-emission (green + blue) hydrogen at about 1 Mt/year in 2025 — up 10% on 2024 — out of roughly 100 Mt of total hydrogen demand.
When will green hydrogen be cost-competitive with natural gas?
Not before the 2030s in most markets. BloombergNEF expects green hydrogen below USD 1/kg only by 2050 in the cheapest renewable regions; near-term competitiveness depends on subsidies such as the EU Hydrogen Bank and US 45V credits.
Can hydrogen replace natural gas for industrial process heat?
Technically yes for many burners, but at 2026 costs it is far more expensive than gas. For most plants, cutting heat demand first — insulating exposed hot equipment and recovering waste heat — pays back far faster than switching fuel, and shrinks any future hydrogen bill.
Sources
- IEA — Global Hydrogen Review 2025 — Executive summary
- IEA — Global Hydrogen Review 2025 — Production prospects to 2030
- IEA — Global Hydrogen Review 2025 — Production highlights
- IRENA — Green hydrogen cost reduction: scaling up electrolysers
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