Native Hydrogen — The Science Beyond Serpentinisation

The terminology

Native hydrogen, natural hydrogen,
white hydrogen, geological hydrogen —
what each term means

The scientific and industrial literature uses several terms interchangeably — but each carries a slightly different emphasis and context. Understanding the distinction matters for reading exploration reports, scientific papers and regulatory texts accurately.

Geochemistry · Primary scientific term

Native hydrogen

From Latin nativus — "born in place, natural" · the term used in mineralogy and geochemistry

The strictest scientific term. Refers to molecular H₂ (dihydrogen) occurring naturally in the subsurface as a product of geological reactions — not introduced from the surface. Analogous to "native gold" or "native copper" in mineralogy: the element in its native elemental form. Used in peer-reviewed geochemistry literature. The term emphasises the in-situ geological origin of the hydrogen.

Industry & media · Most common terms

Natural · White · Geological

Industry terms · used interchangeably · each with different emphasis

Natural hydrogen — the most commonly used term in media and industry. Emphasises the contrast with manufactured hydrogen (green, blue, grey). White hydrogen — the colour-code term adopted by the European Commission and IEA. Emphasises the zero-carbon nature. Geological hydrogen — emphasises the geological origin and distinguishes from biogenic surface H₂. All three refer to the same resource.

peridotite ultramafic rock serpentinisation native geological hydrogen generation Earth crust mantle

Peridotite — the primary source rock for native hydrogen via serpentinisation · iron-rich olivine reacts with water to produce serpentine minerals and molecular H₂ · same rock type in Lorraine, the Pyrenees, the Alps and the Balkans · Photo: Unsplash (free to use)

Generation mechanisms

Four ways the Earth
produces molecular hydrogen

Native hydrogen is not produced by a single mechanism. At least four distinct geological processes generate molecular H₂ in the subsurface, each dominant in different geological settings, at different depths and temperatures, and with different economic implications for exploration.

Mechanism 1 · Dominant · Continental

Serpentinisation

Fe₂SiO₄ + H₂O → Fe₃O₄ + SiO₂ + H₂

Oxidation of ferrous iron in olivine/pyroxene to ferric iron in magnetite, reducing water to H₂. Temperature window: 150–400°C. The dominant mechanism in continental settings. Accounts for ~70% of estimated native H₂ production globally. Operative in ophiolites, Hercynian basements and rifted margins. Lorraine, Pyrenees, Balkans, Alps.

Mechanism 2 · Deep · Ancient Cratons

Radiolysis

2H₂O + radiation → 2H₂ + O₂

Alpha, beta and gamma radiation from decay of uranium, thorium and potassium splits water molecules into H₂ and O₂. Important in ancient Precambrian shield terranes (Canadian Shield, Fennoscandian Shield, South Africa). Produces high-purity H₂ at very great depth (2–4 km+). The Witwatersrand Basin (South Africa) is the reference case: H₂ measured in 3.4 Ga formation water.

thermolysis high temperature rock organic matter pyrolysis geological hydrogen generation deep basin

Mechanism 3 · Deep Basins · High Temperature

Thermolysis & Thermochemical Reduction

H₂O + C(organic) → CO₂ + H₂ (>250°C)

At temperatures above 250°C, thermal cracking of organic matter (thermolysis) and high-temperature water-rock reactions (thermochemical sulphate reduction) can generate significant H₂. Associated with deep sedimentary basins in overmature zones. Less economically prospective than serpentinisation accumulations — H₂ is typically mixed with CH₄ and CO₂ from organic maturation.

biogenic hydrogen subsurface microbial fermentation deep biosphere geological H2 production anaerobic

Mechanism 4 · Shallow · Biogenic

Biogenic Production

C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ + 2H₂

Deep subsurface microorganisms — particularly in anaerobic sediments and hydrothermal systems — generate H₂ as a metabolic byproduct of fermentation. Generally at shallow depths (<500m) and lower temperatures. Concentrations typically low (<5%). The deep biosphere is now estimated to contain ~15–23% of all living biomass on Earth, representing a distributed but diffuse H₂ source.

Why serpentinisation dominates exploration interest

Of the four mechanisms, serpentinisation is the only one that produces high-concentration H₂ in geological settings compatible with conventional structural traps — the conditions required for a commercially exploitable reservoir.

Radiolysis produces high-purity H₂ but at extreme depths in ancient Precambrian cratons — environments that are extremely difficult and expensive to drill and that rarely have conventional reservoir-seal systems. The Witwatersrand Basin H₂ is essentially inaccessible at current technology costs.

Thermolysis produces H₂ mixed with hydrocarbons and CO₂ — extraction requires separation, reducing the economic case. Biogenic H₂ concentrations are too low for direct commercial exploitation.

Serpentinisation in continental ophiolitic settings — the Pyrenees, the Balkans, the Alps, and the Hercynian basement of Lorraine — is where the commercial potential is highest in Europe.

The PoNHy contribution — July 2026

Before the publication of PoNHy (Christiansen et al., Nature Communications, 21 July 2026), there was no standardised, peer-reviewed tool for quantifying H₂ generation rates from serpentinisation in any geological system.

PoNHy integrates 3D geophysical inversion, thermodynamic modelling and Monte Carlo uncertainty quantification into a single open-source Python workflow. Applied to the Western Pyrenees and Northern California, it calculated generation rates of 0.1–0.5 t H₂/yr/km³ reactive rock — or 300–600 t/yr per full system.

These rates are lower than earlier theoretical estimates, but the tool provides something more important than a single number: a standardised, transferable methodology that exploration teams, regulators and investors can apply consistently across any geological setting — including all 27 EU member states in the Getech/EC mapping programme.

Available free on GitHub (RodolfoChristiansen/PoNHy) and Zenodo (DOI: 10.5281/zenodo.18733249).

Global deposits · Key systems

The world's most significant
native hydrogen systems

Native hydrogen has now been documented on every continent. The systems below represent the best-characterised — either through peer-reviewed scientific measurement, active commercial exploration or significant drilling programmes.

Location	Country	Mechanism	H₂ concentration	Key data	Status
Lorraine — PTH-2	🇫🇷 France	Serpentinisation (Hercynian basement)	49.6% at 2,426m · 36.1% at 2,242m	FDE · 3,655m total depth · June 2026 · 92 Mt estimate (not certified)	Exploration
Bulqizë ophiolite	🇦🇱 Albania	Serpentinisation (Jurassic ophiolite)	84% purity · 200 t/yr flux	Truche et al., Science, Feb 2024 · chromite mine · active degassing	Active flux
Yorke Peninsula	🇦🇺 Australia	Serpentinisation (Proterozoic)	97% purity · Ramsay 3 (Dec 2025)	Gold Hydrogen ASX-listed · highest purity ever measured · ~70 bcf est.	Exploration
Bourakébougou	🇲🇱 Mali	Serpentinisation (West African craton)	~98% H₂ · shallow well	Petroma/Hydroma · first village powered by native H₂ since 2012 · ongoing production	Production
Witwatersrand Basin	🇿🇦 South Africa	Radiolysis (Precambrian, 3.4 Ga)	High purity · extreme depth	Lin et al. · ancient formation water · 3 km depth · exploration impractical at current costs	Documented
Western Pyrenees	🇫🇷🇪🇸 France/Spain	Serpentinisation (Jurassic ophiolite)	Surface seeps documented	Christiansen et al. (PoNHy, 2026) · 300–600 t H₂/yr generation rate estimated · active serpentinisation	Scientific
Oman ophiolite	🇴🇲 Oman	Serpentinisation (Cretaceous ophiolite)	H₂ seeps · hyperalkaline springs	World's largest exposed ophiolite · active serpentinisation documented · Samail ophiolite · Vema Hydrogen interested	Documented
Québec ophiolites	🇨🇦 Canada	Serpentinisation (induced — Vema H₂)	Pilot wells · Feb 2026	Vema Hydrogen · stimulated serpentinisation (catalyst injection) · proprietary technology · early-stage	Exploration

shipping maritime transport decarbonisation natural hydrogen e-fuel synthetic fuel supply chain global

Global shipping — one of the primary industrial consumers of future natural hydrogen via e-methanol and e-ammonia supply chains · Photo: Unsplash (free to use)

aviation aircraft kerosene SAF ReFuelEU natural hydrogen e-kerosene synthetic fuel decarbonisation

Aviation — the sector where native hydrogen as e-kerosene feedstock could make ReFuelEU PtL mandates commercially self-sustaining without subsidy from 2030 · Photo: Unsplash (free to use)

"Native hydrogen is not a single resource — it is a family of geological phenomena united by one product: molecular H₂. Understanding which mechanism is dominant in a given geological setting is the first step towards any credible resource assessment."

nativehydrogen.eu · Editorial analysis · July 2026

Europe · Prospectivity

Why Europe is exceptionally
well-placed for native hydrogen

Geological endowment

Europe's geological diversity is unusual among continental plates: within a relatively compact area, it hosts Precambrian cratons (Fennoscandian Shield, Ukrainian Shield), Hercynian basement belts (Lorraine, Ardennes, Armorica, Bohemian Massif), Jurassic ophiolite belts (Pyrenees, Alps, Balkans, Apennines) and Caledonian terranes (Scotland, Norway).

Each of these geological provinces hosts different serpentinisation environments — from ophiolitic lherzolites in the Pyrenees to basement-hosted systems in Lorraine. The Getech/EC mapping programme (July 2026) will produce the first systematic comparison of prospectivity across all 27 EU member states.

The Hercynian basement shared by France, Belgium, Luxembourg, Germany and the Czech Republic is particularly interesting: it represents a large contiguous geological province that has never been systematically explored for native hydrogen, yet hosts the geological analogues of the Lorraine discovery.

Regulatory and industrial alignment

Europe is the only continent that has simultaneously created mandatory demand for synthetic fuels (ReFuelEU Aviation, FuelEU Maritime, RED III RFNBO targets) and is now investing in systematic geological mapping for the feedstock that would make those fuels competitive.

If the Lorraine deposit is certified by REGALOR II in 2027 and enters commercial production at FDE's €0.50/kg target in 2028, it would be the first indigenous European source of ultra-low-cost hydrogen — with direct pipeline access to the Rhine-Ruhr industrial corridor, Paris basin and Belgian industrial heartland.

The combination of regulatory pull (binding synthetic fuel mandates), geological endowment (Hercynian basement, Alpine and Pyrenean ophiolites) and the emerging standardised scientific toolkit (PoNHy) makes Europe uniquely positioned for the next phase of native hydrogen development — if the geology confirms what the early data suggests.

Five reasons Europe leads in native hydrogen development

Regulatory demand pull — ReFuelEU, FuelEU Maritime and RED III RFNBO targets create binding demand for low-cost hydrogen feedstock · Europe needs native H₂ more urgently than any other continental market
Geological diversity — ophiolitic belts (Pyrenees, Alps, Balkans), Hercynian basement (Lorraine, Ardennes), Precambrian shields (Fennoscandia) · multiple prospective geological settings across 27 member states
First EU exploration permit — FDE's Trois Évêchés permit (2,254 km², Moselle) is the first natural hydrogen exploration permit ever issued in the EU · regulatory precedent established
Institutional mapping — EC/Getech contract (July 2026, +€1M) will produce the first pan-EU native hydrogen prospectivity map in 2027 · foundation for future permitting across all member states
Scientific infrastructure — European research institutions (LIAG Hannover, CNRS, BGR) are leading the global science · PoNHy (Nature Communications, 2026) is a European tool · Europe leads the peer-reviewed literature

⚖️ Important Notice · Documentary Portal · Information Only

For information only: nativehydrogen.eu is a documentary portal of a strictly informational nature. All information comes from third-party public sources not controlled by BESS Energie SRL. No guarantee of accuracy, completeness or currency is given.

Consult primary sources: Christiansen et al., Nature Communications 2026 (DOI: 10.1038/s41467-026-73920-5) · Truche et al., Science 2024 · FDE (fde-corp.com / actusnews.com) · Getech Group plc (getech.com) · IEA (iea.org).

FDE's €0.50/kg target is a declared production objective, not yet independently certified. REGALOR II certification expected 2027. Belgium: No confirmed natural hydrogen accumulation or commercially exploitable resource on Belgian territory to date. BE.Hydrogen is a mapping programme — not a discovery. Not investment advice. © 2026 BESS Energie SRL · BCE 0698.949.732

Native hydrogen:how the Earth generatesmolecular H₂ — and where

Native hydrogen, natural hydrogen,white hydrogen, geological hydrogen —what each term means

Four ways the Earthproduces molecular hydrogen

The world's most significantnative hydrogen systems

Why Europe is exceptionallywell-placed for native hydrogen

Native hydrogen:
how the Earth generates
molecular H₂ — and where

Native hydrogen, natural hydrogen,
white hydrogen, geological hydrogen —
what each term means

Four ways the Earth
produces molecular hydrogen

The world's most significant
native hydrogen systems

Why Europe is exceptionally
well-placed for native hydrogen