Hycaunais
Hycaunais is a hydrogen project in Saint-Florentin, Yonne, France, France using Power-to-Gas, biological methanation.
Overview
Status2024 operation date stated; member-only current progress field
Country · regionFrance · Saint-Florentin, Yonne, France
TechnologyPower-to-Gas, biological methanation
Productsynthetic methane (synCH4) and renewable hydrogen process output
Capacity1 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
Carbon Reduction1522TequCO2/an
Componentselectrolyzer, biological methanation, methanisation
Feedstockbiogenic CO₂ from biogas / anaerobic digestion
Final UseInjection into the gas network as synthetic methane (synCH4)
Power Sourcewind electricity
Project TypePower-to-Gas demonstrator / feasibility and replicability project
Capacity & economics
Production Volume94T/an renewable hydrogen capacity
Status & timeline
Lifecycle Stageoperation date stated as 2024; pilot-scale validation also reported
Phase SequenceKick-off → works → start-up → optimization tests → operation
EventJune 2019 kick-off, 2020 works start, 2021 start-up, 2021-23 optimization tests, 2024 operation date
Timeline
No recorded project events.
Sources & record history
Sources
- France Hydrogène (Vig'Hy) HYCAUNAIS - Vig'Hy Shared by 10 fields: Current
- GRDF / Storengy R&D et innovation GRDF — Storengy Shared by 6 fields: Current
- European Clean Hydrogen Partnership European Hydrogen Observatory projects Dec2025
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 | Hycaunais | View exact valueHycaunais | HYCAUNAIS - Vig'Hy | — | |
| Administrative Area | Saint-Florentin, Yonne, France | View exact valueSaint-Florentin, Yonne, France | HYCAUNAIS - Vig'Hy | — | |
| Country | France | View exact valueFrance | HYCAUNAIS - Vig'Hy | — | |
| Carbon Reduction | 1522TequCO2/an | View exact value1522TequCO2/an | HYCAUNAIS - Vig'Hy | — | |
| Components | electrolyzer, biological methanation, methanisation | View exact value["electrolyzer","biological methanation","methanisation"] | R&D et innovation GRDF — Storengy | — | |
| Feedstock | biogenic CO₂ from biogas / anaerobic digestion | View exact valuebiogenic CO₂ from biogas / anaerobic digestion | HYCAUNAIS - Vig'Hy | — | |
| Final Use | Injection into the gas network as synthetic methane (synCH4) | View exact valueInjection into the gas network as synthetic methane (synCH4) | R&D et innovation GRDF — Storengy | — | |
| Power Source | wind electricity | View exact valuewind electricity | HYCAUNAIS - Vig'Hy | — | |
| Product | synthetic methane (synCH4) and renewable hydrogen process output | View exact valuesynthetic methane (synCH4) and renewable hydrogen process output | R&D et innovation GRDF — Storengy | — | |
| Project Type | Power-to-Gas demonstrator / feasibility and replicability project | View exact valuePower-to-Gas demonstrator / feasibility and replicability project | R&D et innovation GRDF — Storengy | — | |
| Technology | Power-to-Gas, biological methanation | View exact value["Power-to-Gas","biological methanation"] | R&D et innovation GRDF — Storengy | — | |
| Capacity | 1 MW | View exact value1 MW | European Hydrogen Observatory projects Dec2025 Confidence: reported | Snapshot 2025-12-01 | Older value (2025) |
| Production Volume | 94T/an renewable hydrogen capacity | View exact value94T/an renewable hydrogen capacity | HYCAUNAIS - Vig'Hy | — | |
| Event | June 2019 kick-off, 2020 works start, 2021 start-up, 2021-23 optimization tests, 2024 operation date | View exact value["June 2019 kick-off","2020 works start","2021 start-up","2021-23 optimization tests","2024 operation date"] | HYCAUNAIS - Vig'Hy | — | |
| Lifecycle Stage | operation date stated as 2024; pilot-scale validation also reported | View exact valueoperation date stated as 2024; pilot-scale validation also reported | R&D et innovation GRDF — Storengy | — | |
| Phase Sequence | Kick-off → works → start-up → optimization tests → operation | View exact valueKick-off → works → start-up → optimization tests → operation | HYCAUNAIS - Vig'Hy | — | |
| Progress Status | 2024 operation date stated; member-only current progress field | View exact value2024 operation date stated; member-only current progress field | HYCAUNAIS - Vig'Hy | — |
Record history
15 current sourced values · 1 older value · Record updated