Hydnun Steel project in Spain
Overview
StatusFeasibilityInternational Energy Agency · as of 2026
Country · regionSpainJunta de Comunidades de Castilla-La Mancha · Puertollano, Ciudad Real, Castilla-La Mancha, Spain
TechnologyOther electrolysisInternational Energy Agency · as of 2026
ProductH2International Energy Agency · as of 2026
Capacity1,884 MWInternational Energy Agency · as of 2026
Capacity values retain their recorded units and scope. MW, kt H₂/y and Nm³ H₂/h are different measures; this page does not convert or add them without a shared operating basis. “Other Electrolysis” and “Unknown PtX” are recorded classifications, not a specific electrolyzer design or power-to-X route.
Details
Technology & product
ComponentsElectrolyser (Other electrolysis)Junta de Comunidades de Castilla-La Mancha
Configuration DetailUnknown PtXInternational Energy Agency · as of 2026
Final UsePlanned use of green hydrogen in the iron-reduction / direct-reduced-iron (DRI) phase of steel production.
Project Typehydrogen production facilityJunta de Comunidades de Castilla-La Mancha
Location & names
Site NamePuertollanoJunta de Comunidades de Castilla-La Mancha
AliasHydnun Steel project in Spain; Acería Verde de PuertollanoJunta de Comunidades de Castilla-La Mancha
Official NameHydnum SteelJunta de Comunidades de Castilla-La Mancha
Additional project information
Administrative AreaPuertollanoInternational Energy Agency · as of 2026
CountrySpainInternational Energy Agency · as of 2026
Capacity (kt H2/y)326 kt H2/yInternational Energy Agency · as of 2026
Capacity (Nm³ H₂/h)418,660 Nm³ H₂/hInternational Energy Agency · as of 2026
Capacity (Announced Size)2.6 Mt steel/yInternational Energy Agency · as of 2026
Timeline
- Announcement : 2023-02-21Ayuntamiento de Puertollano
Sources & record history
Sources
- IEA Hydrogen Projects dataset Shared by 11 fields: Snapshot 2026-06-18 · Confidence: reported · Older value (2026)
- Junta de Comunidades de Castilla-La Mancha Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523)
- H2Prism earlier record (SRC-C-P200)
- Hydnum Steel Hydnum Steel obtiene la declaración de Proyecto Prioritario por la Junta de Castilla-La Mancha para convertirse en la primera acería limpia de España
- Primetals Technologies Primetals Technologies and Hydnum Steel Join Forces for New Green Steel Production Plant in Spain
- Ayuntamiento de Puertollano Ayuntamiento de Puertollano (https://www.puertollano.es/hydnum-steel-construira-en-puertollano-la-mayor-planta-en-espana-de-acero-verde-con-una-inversion-de-1-000-millones/)
Field sources
Shared date, confidence and value status appear once with their source above; a dash in the table refers to that source context.
| Field | Shown value | Original value | Source | Date basis | Meaning |
|---|---|---|---|---|---|
| Name | Hydnun Steel project in Spain | View exact valueHydnun Steel project in Spain | IEA Hydrogen Projects dataset | — | — |
| Site Name | Puertollano | View exact valuePuertollano | Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Administrative Area | Puertollano, Ciudad Real, Castilla-La Mancha, Spain | View exact valuePuertollano, Ciudad Real, Castilla-La Mancha, Spain | Hydnum Steel obtiene la declaración de Proyecto Prioritario por la Junta de Castilla-La Mancha para convertirse en la primera acería limpia de España; Primetals Technologies and Hydnum Steel Join Forces for New Green Steel Production Plant in Spain | Current | |
| Alias | Hydnun Steel project in Spain; Acería Verde de Puertollano | View exact value[{"kind":"typo","name":"Hydnun Steel project in Spain"},{"kind":"source_label","name":"Acería Verde de Puertollano"}] | Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Country | Spain | View exact valueESP | Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Official Name | Hydnum Steel | View exact value[{"lang":"es","name":"Hydnum Steel","evidence":["E-01"]}] | Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Components | Electrolyser (Other electrolysis) | View exact value{"kind":"전해조","tech":"그 외 전해","tech_raw":"electrolizador","component_id":"CMP-1"} | Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Configuration Detail | Unknown PtX | View exact valueUnknown PtX | IEA Hydrogen Projects dataset | — | — |
| Final Use | Planned use of green hydrogen in the iron-reduction / direct-reduced-iron (DRI) phase of steel production. | View exact valuePlanned use of green hydrogen in the iron-reduction / direct-reduced-iron (DRI) phase of steel production. | Hydnum Steel obtiene la declaración de Proyecto Prioritario por la Junta de Castilla-La Mancha para convertirse en la primera acería limpia de España; Primetals Technologies and Hydnum Steel Join Forces for New Green Steel Production Plant in Spain | Current | |
| Product | H2 | View exact valueH2 | IEA Hydrogen Projects dataset | — | — |
| Project Type | hydrogen production facility | View exact valuehydrogen_production_facility | Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); Junta de Comunidades de Castilla-La Mancha (https://www.jccm.es/servicios/tablon-de-anuncios/descarga/26948/31523); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Technology | Other electrolysis | View exact valueOther electrolysis | IEA Hydrogen Projects dataset | — | — |
| Capacity | 1,884 MW | View exact value1883.9695243958752 MW | IEA Hydrogen Projects dataset | — | — |
| Event | Announcement : 2023-02-21 | View exact value{"date":"2023-02-21","tags":{"as_of":"2023-02-21","source":"Ayuntamiento de Puertollano","evidence":["E-04"],"judged_by":"transcription","confidence":"high","accessed_at":"2026-08-18T03:30:00Z"},"ev_type":"EV-01","event_id":"V-01","raw_date_text":"21 de febrero de 2023","date_precision":"day"} | Ayuntamiento de Puertollano (https://www.puertollano.es/hydnum-steel-construira-en-puertollano-la-mayor-planta-en-espana-de-acero-verde-con-una-inversion-de-1-000-millones/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Progress Status | Feasibility | View exact valueFeasibility study | IEA Hydrogen Projects dataset | — | — |
| Administrative Area | Puertollano | View exact valuePuertollano | IEA Hydrogen Projects dataset | — | — |
| Country | Spain | View exact valueSpain | IEA Hydrogen Projects dataset | — | — |
| Capacity (kt H2/y) | 326 kt H2/y | View exact value326.40400000000005 kt H2/y | IEA Hydrogen Projects dataset | — | — |
| Capacity (Nm³ H₂/h) | 418,660 Nm³ H₂/h | View exact value418659.89431019453 Nm³ H₂/h | IEA Hydrogen Projects dataset | — | — |
| Capacity (Announced Size) | 2.6 Mt steel/y | View exact value2.6 Mt steel/y | IEA Hydrogen Projects dataset | — | — |
Record history
2 current sourced values · 12 older values · Record updated