SALCOS - first expansion - phase 1
Overview
StatusFID / ConstructionInternational Energy Agency · as of 2026
Country · regionGermanyANDRITZ
TechnologyPressurized alkaline electrolysis
ProductH2International Energy Agency · as of 2026
Capacity100 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.
Details
Technology & product
Componentselectrolyzer (alkaline electrolysis)ANDRITZ
Configuration DetailANDRITZ contracted on an EPC basis to deliver a 100 MW electrolysis plant incorporating HydrogenPro pressurized alkaline electrolyzer technology for the first SALCOS stage at Salzgitter Flachstahl (announced 2023-09-20).
Final UsePlanned hydrogen use for green steel production at Salzgitter (September 2023 announcement)
Project GroupSALCOS® (first stage)ANDRITZ
Project Typehydrogen production facilityANDRITZ
Status & timeline
Date online (tracker field)2026 (meaning under review)International Energy Agency · as of 2026
Location & names
Site NameSalzgitter Flachstahl GmbH site, SalzgitterANDRITZ
AliasSALCOS®ANDRITZ
Official NameSALCOS® - Salzgitter Low CO2 SteelmakingANDRITZ
Additional project information
Administrative AreaSalzgitterInternational Energy Agency · as of 2026
CountryGermanyInternational Energy Agency · as of 2026
TechnologyALKInternational Energy Agency · as of 2026
Capacity (Announced Size)100 MWInternational Energy Agency · as of 2026
Capacity (kt H2/y)16.9 kt H2/yInternational Energy Agency · as of 2026
Capacity (Nm³ H₂/h)21,739 Nm³ H₂/hInternational Energy Agency · as of 2026
Timeline
- Final investment decision (FID) : 2022-07-13ANDRITZ
- Equipment ordered : 2023-09-20ANDRITZ
Sources & record history
Sources
- Salzgitter AG Green light for green steel | Salzgitter AG
- ANDRITZ ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group)
- H2Prism earlier record (SRC-C-P200)
- www.salzgitter-ag.com https://www.salzgitter-ag.com/en/newsroom/press-releases/details/salzgitter-orders-one-of-europes-largest-green-hydrogen-plants-from-andritz-21046.html
- Salzgitter AG Salzgitter orders one of Europe’s largest green hydrogen plants from ANDRITZ Shared by 2 fields: Current
- International Energy Agency IEA Hydrogen Projects dataset Shared by 10 fields: Snapshot 2026-06-18 · Confidence: reported · Older value (2026)
- Salzgitter AG Salzgitter AG (https://www.salzgitter-ag.com/fileadmin/finanzberichte/2025/gb2025/en/downloads/szag-ar2025-complete.pdf)
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 | SALCOS - first expansion - phase 1 | View exact valueSALCOS - first expansion - phase 1 | Green light for green steel | Salzgitter AG | Current | |
| Site Name | Salzgitter Flachstahl GmbH site, Salzgitter | View exact valueSalzgitter Flachstahl GmbH site, Salzgitter | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Alias | SALCOS® | View exact value[{"kind":"source_label","name":"SALCOS®"}] | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Country | Germany | View exact valueDEU | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Official Name | SALCOS® - Salzgitter Low CO2 Steelmaking | View exact value[{"lang":"en","name":"SALCOS® - Salzgitter Low CO2 Steelmaking","evidence":["E-03"]}] | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Components | electrolyzer (alkaline electrolysis) | View exact value{"kind":"electrolyzer","tech":"alkaline_electrolysis","tech_raw":"pressurized alkaline electrolyzer technology","component_id":"CMP-1"} | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Configuration Detail | ANDRITZ contracted on an EPC basis to deliver a 100 MW electrolysis plant incorporating HydrogenPro pressurized alkaline electrolyzer technology for the first SALCOS stage at Salzgitter Flachstahl (announced 2023-09-20). | View exact valueANDRITZ contracted on an EPC basis to deliver a 100 MW electrolysis plant incorporating HydrogenPro pressurized alkaline electrolyzer technology for the first SALCOS stage at Salzgitter Flachstahl (announced 2023-09-20). | https://www.salzgitter-ag.com/en/newsroom/press-releases/details/salzgitter-orders-one-of-europes-largest-green-hydrogen-plants-from-andritz-21046.html | Current | |
| Final Use | Planned hydrogen use for green steel production at Salzgitter (September 2023 announcement) | View exact valuePlanned hydrogen use for green steel production at Salzgitter (September 2023 announcement) | Salzgitter orders one of Europe’s largest green hydrogen plants from ANDRITZ | — | |
| Product | H2 | View exact valueH2 | IEA Hydrogen Projects dataset | — | — |
| Project Group | SALCOS® (first stage) | View exact value{"exists":true,"evidence":["E-03"],"group_name":"SALCOS®","phase_name":"first stage","phase_order":1} | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Project Type | hydrogen production facility | View exact valuehydrogen_production_facility | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group) | Older value | |
| Technology | Pressurized alkaline electrolysis | View exact valuePressurized alkaline electrolysis | Salzgitter orders one of Europe’s largest green hydrogen plants from ANDRITZ | — | |
| Capacity | 100 MW | View exact value100 MW | IEA Hydrogen Projects dataset | — | — |
| Event | Final investment decision (FID) : 2022-07-13 | View exact value{"date":"2022-07-13","tags":{"as_of":"2025-12","source":"Salzgitter AG Annual Report 2025","evidence":["E-05","E-03"],"judged_by":"worker_review","confidence":"high","accessed_at":"2026-08-18T00:00:00+09:00"},"scope":"group:SALCOS first stage; E-03 explicitly places CMP-1 in that stage","ev_type":"EV-05","event_id":"V-01","raw_date_text":"The Supervisory Board approved the company funds required on July 13, 2022.","date_precision":"day"} | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200); Salzgitter AG (https://www.salzgitter-ag.com/fileadmin/finanzberichte/2025/gb2025/en/downloads/szag-ar2025-complete.pdf) | Older value | |
| Event | Equipment ordered : 2023-09-20 | View exact value{"date":"2023-09-20","tags":{"as_of":"2023-09-20","source":"ANDRITZ newsroom","evidence":["E-01"],"judged_by":"transcription","confidence":"high","accessed_at":"2026-08-18T00:00:00+09:00"},"scope":"component:CMP-1","ev_type":"EV-08","event_id":"V-02","raw_date_text":"Salzgitter Flachstahl GmbH has ordered one of Europe's largest green hydrogen plants from international technology group ANDRITZ.","date_precision":"day"} | ANDRITZ (https://www.andritz.com/newsroom-en/metals/2023-09-20-salzgitter-group); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Event | Date online : 2026 | View exact value{"date":"2026","date_precision":"year","event":"Date online","basis":"iea_hydrogen_projects_raw.csv"} | IEA Hydrogen Projects dataset | — | — |
| Progress Status | FID / Construction | View exact valueFID/Construction | IEA Hydrogen Projects dataset | — | — |
| Administrative Area | Salzgitter | View exact valueSalzgitter | IEA Hydrogen Projects dataset | — | — |
| Country | Germany | View exact valueGermany | IEA Hydrogen Projects dataset | — | — |
| Technology | ALK | View exact valueALK | IEA Hydrogen Projects dataset | — | — |
| Capacity (Announced Size) | 100 MW | View exact value100 MW | IEA Hydrogen Projects dataset | — | — |
| Capacity (kt H2/y) | 16.9 kt H2/y | View exact value16.94869565217391 kt H2/y | IEA Hydrogen Projects dataset | — | — |
| Capacity (Nm³ H₂/h) | 21,739 Nm³ H₂/h | View exact value21739.130434782608 Nm³ H₂/h | IEA Hydrogen Projects dataset | — | — |
Record history
3 current sourced values · 13 older values · Record updated