HyMarnham
Overview
StatusConceptEuropean Clean Hydrogen Partnership · as of 2025
Country · regionUnited KingdomHyMarnham Power
TechnologyWater electrolysisEuropean Clean Hydrogen Partnership · as of 2025
Capacity15 MWEuropean Clean Hydrogen Partnership · as of 2025
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
Componentselectrolyser (ALK)HyMarnham Power
Project Typehydrogen production facilityHyMarnham Power
Capacity & economics
Total Capex50 million GBP project costHyMarnham Power
Location & names
Site Nameformer High Marnham coal-fired power station siteHyMarnham Power
AliasHyMarnhamHyMarnham Power
Official NameHyMarnham PowerHyMarnham Power
Timeline
- Construction start : 2024-09HyMarnham Power
- Commercial operation : 2026-04Department for Energy Security and Net Zero
Sources & record history
Sources
- European Hydrogen Observatory projects Dec2025 Shared by 4 fields: Snapshot 2025-12-01 · Confidence: reported · Older value (2025)
- HyMarnham Power HyMarnham Power (https://hymarnhampower.com/about-us/)
- H2Prism earlier record (SRC-C-P200)
- Department for Energy Security and Net Zero Department for Energy Security and Net Zero (https://assets.publishing.service.gov.uk/media/6a16b44e29bb11891b1cf18a/flexibility-in-electrolytic-hydrogen-call-for-evidence.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 | HyMarnham | View exact valueHyMarnham | European Hydrogen Observatory projects Dec2025 | — | — |
| Site Name | former High Marnham coal-fired power station site | View exact valueformer High Marnham coal-fired power station site | HyMarnham Power (https://hymarnhampower.com/about-us/); HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Alias | HyMarnham | View exact value[{"kind":"source_label","name":"HyMarnham"}] | HyMarnham Power (https://hymarnhampower.com/about-us/); HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Country | United Kingdom | View exact valueGBR | HyMarnham Power (https://hymarnhampower.com/about-us/); HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Official Name | HyMarnham Power | View exact value[{"lang":"en","name":"HyMarnham Power","evidence":["E-01"]}] | HyMarnham Power (https://hymarnhampower.com/about-us/); HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Components | electrolyser (ALK) | View exact value{"kind":"electrolyser","tech":"ALK","tech_raw":"production of hydrogen gas by alkaline electrolysis of water","component_id":"CMP-1"} | HyMarnham Power (https://hymarnhampower.com/about-us/); HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Project Type | hydrogen production facility | View exact valuehydrogen_production_facility | HyMarnham Power (https://hymarnhampower.com/about-us/); HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Technology | Water electrolysis | View exact valueWater electrolysis | European Hydrogen Observatory projects Dec2025 | — | — |
| Capacity | 15 MW | View exact value15 MW | European Hydrogen Observatory projects Dec2025 | — | — |
| Total Capex | 50 million GBP project cost | View exact value{"unit":"million GBP","number":50,"of_what":"project cost","raw_text":"Our £50 million project"} | HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Event | Construction start : 2024-09 | View exact value{"date":"2024-09","tags":{"as_of":"2024-09","source":"HyMarnham Power","evidence":["E-04"],"judged_by":"transcription","confidence":"high","accessed_at":"2026-08-18T03:00:00Z"},"ev_type":"EV-10","event_id":"V-01","raw_date_text":"September 2024 ... Construction to transform the brownfield site into a clean energy hub","date_precision":"month"} | HyMarnham Power (https://hymarnhampower.com/about-us/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Event | Commercial operation : 2026-04 | View exact value{"date":"2026-04","tags":{"as_of":"2026-04","source":"Department for Energy Security and Net Zero","evidence":["E-05"],"judged_by":"transcription","confidence":"high","accessed_at":"2026-08-18T03:00:00Z"},"ev_type":"EV-13","event_id":"V-02","raw_date_text":"HyMarnham Power, beginning commercial operations in April 2026","date_precision":"month"} | Department for Energy Security and Net Zero (https://assets.publishing.service.gov.uk/media/6a16b44e29bb11891b1cf18a/flexibility-in-electrolytic-hydrogen-call-for-evidence.pdf); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200) | Older value | |
| Progress Status | Concept | View exact valueannounced_or_planned | European Hydrogen Observatory projects Dec2025 | — | — |
Record history
0 current sourced values · 12 older values · Record updated