GravitHy
- Company typePrivate
- Founded2022
- HeadquartersMarseille, France
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
GravitHy firmographics
Firmographics- Name
- GravitHy
- Legal name
- GRAVITHY
- Website
- https://gravithy.eu
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Ownership category
- akta.pro rank
GravitHy industry classification
Industry- Product category
- Low-Carbon Iron Manufacturing (Green Steel Feedstock)
- NAICS
- Iron and Steel Mills and Ferroalloy Manufacturing (331110), Iron and Steel Mills and Ferroalloy Manufacturing (3311), Iron and Steel Mills and Ferroalloy Manufacturing (33111), Industrial Gas Manufacturing (32512), Primary Metal Manufacturing (331)
- SIC
- Industrial Process Furnaces & Ovens (3567)
- akta.pro primary industry
- Direct Reduced Iron (DRI) & Hot Briquetted Iron (HBI) Production (IMAKABAC)
- akta.pro secondary industries
- Hydrogen (Industrial & Mobility) (IMAEACAB), Hydrogen Energy Storage & Power-to-X Equipment (electrolyzers, storage, fuel cell systems) (IMAGAHAM), Hydrogen & Derivative Fuels for Industry (H₂, Ammonia, Methanol) (EUABAJAC)
Keywords
Where GravitHy is headquartered
LocationHeadquarters
- HQ city
- Marseille
- HQ country
- France
- HQ region
- Europe
Offices3 records
Markets served
GravitHy business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Infrastructure, Technology or R&D, Personnel, Operations, Marketing or Sales
Revenue model
- Sale of Low-Carbon Iron (DRI/HBI): GravitHy generates revenue from the sale of decarbonized iron products — Direct Reduced Iron (DRI) and Hot Briquetted Iron (HBI) — produced using hydrogen-based reduction. HBI is sold to steelmakers as a feedstock for electric arc furnaces, enabling green steel production. The company also has commercial agreements where partners (e.g., Rio Tinto) assist in marketing and selling HBI to global steelmakers.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
GravitHy product offering
Product offeringCore offering
GravitHy produces hydrogen-based Direct Reduced Iron (DRI) and Hot Briquetted Iron (HBI) at its flagship GravitHy-Fos industrial plant in Fos-sur-Mer, France. The 2 million tonnes-per-year facility uses low-carbon hydrogen produced via a 750 MW on-site electrolyzer to replace coal-based blast-furnace processes, supplying decarbonized iron feedstock to steelmakers in the automotive, construction, and wind energy sectors.
Product overview
GravitHy is a low-carbon iron producer that operates a single integrated product offering centered on its GravitHy-Fos hydrogen-based Direct Reduced Iron (DRI) and Hot Briquetted Iron (HBI) manufacturing plant. The company's core product is decarbonized iron supplied to steelmakers. It also leverages a Siemens Xcelerator digital twin platform to optimize the design and operations of its industrial facility. The product portfolio is unified around one flagship plant and its associated digital infrastructure.
Differentiator
Problem solved
Functional benefit
Products and services
- Low-Carbon Iron (HBI / DRI) Hydrogen-based Direct Reduced Iron (DRI) and Hot Briquetted Iron (HBI) supplied to steelmakers as a low-carbon feedstock for electric arc furnaces, enabling up to 90% CO2 emissions reduction versus conventional blast-furnace steelmaking. Target customers are large steel producers serving automotive, construction, and wind energy sectors.
- GravitHy-Fos Industrial Plant
Quantifiable outcome
- Reduces CO2 emissions by up to 90% compared to traditional blast-furnace steelmaking
- +3 more outcomes
Companies that use GravitHy
Customer profileNamed customers1 record
Segments1 record
Ideal customer profiles1 record
GravitHy technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
GravitHy partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered strategic, major, minor and core.
- France Hydrogen (association)strategicGravitHy Managing Director Alice Vieillefosse was elected to the Board of Directors of France Hydrogen in December 2025. France Hydrogen is the leading association federating over 450 hydrogen sector stakeholders in France, including large industrial groups, SMEs, startups, research organizations, and local authorities. This board position reinforces GravitHy's role in shaping France's hydrogen strategy and industrial decarbonization policy.
- HatchmajorGravitHy selected Hatch, a global engineering and project delivery firm, to carry out the Front-End Engineering Design (FEED / APD) for the Fos-sur-Mer plant. Hatch is responsible for defining the overall technical configuration, process and energy system integration, mass and energy balances, constructibility studies, cost estimation, execution strategy, and project scheduling.
- Elyse EnergystrategicGravitHy, Elyse Energy, and Marcegaglia signed a MoU in February 2026 to explore and develop industrial synergies within the Fos-sur-Mer industrial-port zone. The three companies are developing complementary projects: GravitHy (low-carbon iron), Elyse Energy (e-methanol, e-SAF via NeoCarb project), and Marcegaglia (low-carbon steel via Mistral project). Four cooperation pillars include shared logistics, circular economy and CO2 reuse, shared site services, and regulatory/environmental coordination.
- Cleantech for Europe (Cleantech Scale-up Coalition)minorGravitHy joined the Cleantech Scale-up Coalition, an initiative led by Cleantech for Europe that brings together companies deploying clean technologies for Europe's climate neutrality, energy security, and global competitiveness. The announcement was made at the Cleantech for Europe Summit in December 2025.
- Siemens (and Capgemini)strategicSiemens and Capgemini expanded their strategic partnership in October 2025 to co-develop AI-native digital solutions for industrial transformation. As one of three client case studies, GravitHy is targeted to achieve a 10% reduction in hydrogen production costs through AI-driven optimization of the Fos-sur-Mer plant's operations using Siemens' industrial software and Capgemini's engineering expertise. This builds on the May 2024 Siemens France partnership for digital twin development.
- HES FOS (HES International)majorGravitHy signed a MoU with HES FOS, a subsidiary of HES International, in October 2025 to develop critical port infrastructure at Fos-sur-Mer. HES FOS will design and operate storage, handling, and transfer facilities for importing iron ore pellets and exporting HBI, ensuring reliable maritime logistics for the plant's operations. A definitive agreement is targeted by 2026.
- Rio TintocoreRio Tinto joined the Series A as an investor and signed a strategic supply and commercial agreement in November 2024. Rio Tinto will supply high-quality direct-reduction iron ore pellets from its Iron Ore Company of Canada (IOC) operations and use its commercial expertise to market and sell GravitHy's low-carbon HBI globally to steelmakers. This partnership provides both raw material supply security and market access.
- MarcegagliacoreMarcegaglia, a major Italian steel producer, joined the Series A and is developing the Mistral project — a low-carbon steelmaking plant adjacent to GravitHy's site at Fos-sur-Mer. In February 2026, GravitHy, Marcegaglia, and Elyse Energy signed a MoU to develop industrial synergies including shared logistics, circular economy flows, shared site services, and regulatory coordination. Marcegaglia is an offtake customer and strategic co-developer of the Fos-sur-Mer low-carbon steel hub.
- IDOMmajorGravitHy selected IDOM, an international engineering firm, following a global tender to lead the FEL 2 (Front-End Loading phase 2) conceptual engineering stage of the Fos-sur-Mer plant in 2024. IDOM's international profile and expertise on complex strategic projects qualified it for this critical project definition stage.
- EDFcoreEDF signed a Letter of Intent (LOI) with GravitHy in April 2024 to secure a portion of electricity supply for the Fos-sur-Mer plant through a Nuclear Production Allocation Contract (CAPN). This provides low-carbon, competitively priced, and stable electricity for over 10 years, essential for powering the 750 MW electrolyzer.
- ValestrategicGravitHy signed a MoU with Vale in May 2023 to explore innovative solutions for low-carbon steel production, specifically evaluating Vale's advanced iron ore briquetting technology for use in the Fos-sur-Mer DRI/HBI process. Vale has developed briquettes that emit 80% less CO2 in manufacturing compared to conventional pellets, aligned with GravitHy's decarbonization goals.
Scale indicators10 records
Recent moves7 records
Expansion highlights6 records
GravitHy competitors and assessment
Company assessmentOthers
- ArcelorMittal:
- Primetals Technologies: Mitsubishi Heavy Industries group company and a GravitHy founding shareholder; supplies metallurgical process technology, including DRI and EAF solutions. Comparable as an enabling equipment/technology provider to the hydrogen-DRI value chain GravitHy operates in.
Direct peers
- Stegra (formerly H2 Green Steel): Swedish developer of large-scale hydrogen-based green steel, with an integrated DRI/EAF complex under construction in Boden. Closely comparable to GravitHy on product (green iron/steel), hydrogen-based direct-reduction technology, target customers (European steelmakers/OEMs), and European regulatory positioning.
- SSAB: Nordic steelmaker running the HYBRIT initiative to replace coking coal with green hydrogen in DRI; operates Oxelösund and Luleå sites. Directly comparable as a pioneer hydrogen-DRI steel producer serving similar European decarbonizing customers.
Broad incumbents
- Voestalpine: Austrian integrated steelmaker running the H2FUTURE pilot at Linz to test hydrogen-based DRI at industrial scale. Overlaps with GravitHy on hydrogen DRI technology and European automotive/industrial steel customer base, but operates across a much broader product portfolio.
- Thyssenkrupp Steel: German integrated steelmaker developing the tkH2Steel transition to hydrogen DRI at Duisburg. Comparable on hydrogen-DRI decarbonization pathway and European steelmaker customer base, though operating from an existing integrated mill footprint.
- Air Products: Global industrial gases major with large-scale green hydrogen projects (e.g., NEOM) supplying decarbonized industrial customers. Comparable as a producer of green hydrogen at scale for industrial offtakers, but operating across a much broader gases and hydrogen portfolio.
Emerging players
- Boston Metal: US-based developer of molten oxide electrolysis (MOE) for primary steelmaking, an alternative decarbonized iron technology. Comparable as a venture-backed emerging player targeting low-carbon iron for the same end-markets, but using an electrochemical rather than hydrogen-reduction route.
- Electra: Early-stage US company commercializing electrochemical ironmaking at lower temperatures. Comparable as an emerging low-carbon iron technology developer competing for the same decarbonization value pool as GravitHy, but at a much earlier commercialization stage.
- Vulcan Energy Resources: European developer combining geothermal power with lithium extraction and green hydrogen production for industrial customers in the Rhine Valley. Comparable as a European deep-tech producer of green hydrogen for industrial decarbonization, though focused on lithium and chemicals rather than iron.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks7 records
Key highlights7 records
Customer concentration
GravitHy social profiles
Digital presenceGravitHy financial estimates
Financial estimateRevenue estimate
Valuation estimate
GravitHy leadership team
Management profileNumber of profiles
Profiles3 records
GravitHy funding detail
Funding detailFunding overview
Funding rounds2 records
Investors7 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
GravitHy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about GravitHy
What does GravitHy do?
GravitHy produces hydrogen-based Direct Reduced Iron (DRI) and Hot Briquetted Iron (HBI) at its flagship GravitHy-Fos industrial plant in Fos-sur-Mer, France. The 2 million tonnes-per-year facility uses low-carbon hydrogen produced via a 750 MW on-site electrolyzer to replace coal-based blast-furnace processes, supplying decarbonized iron feedstock to steelmakers in the automotive, construction, and wind energy sectors.
Is GravitHy a public or private company?
GravitHy is a private company. It is classified as venture growth investor backed and is currently operating.
When was GravitHy founded?
GravitHy was founded in 2022. It employs 11 to 50 people.
Where is GravitHy based?
GravitHy is headquartered in Marseille, France, in the Europe region.
How does GravitHy make money?
One revenue line is on record: sale of Low-Carbon Iron (DRI/HBI).
Who are GravitHy's main competitors?
Others on record are ArcelorMittal and Primetals Technologies. Direct peers are Stegra (formerly H2 Green Steel) and SSAB. Broad incumbents are Voestalpine, Thyssenkrupp Steel and Air Products. Emerging players are Boston Metal, Electra and Vulcan Energy Resources.
Does GravitHy have an API?
No public API is recorded for GravitHy.
What industry is GravitHy in?
GravitHy's product category is Low-Carbon Iron Manufacturing (Green Steel Feedstock). Its primary akta.pro industry code is IMAKABAC, Direct Reduced Iron (DRI) & Hot Briquetted Iron (HBI) Production, with a secondary code of IMAEACAB, Hydrogen (Industrial & Mobility). Its NAICS code is 331110 and its SIC code is 3567.