Zero Emission Valley (ZEV) - Le Cheylas

France · FR-38 Isère

Overview

StatusFID / Construction

Country · regionFrance · FR-38 Isère

TechnologyOther Electrolysis

ProductH2

Capacity10 MW

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)

Configuration DetailUnknown PtX

Project Typehydrogen production facility

Capacity & economics

Production VolumePlanned hydrogen production capacity of up to 4 tonnes per day at Lhyfe Le Cheylas (October 2024 revised 10 MW design)

Status & timeline

Date online (tracker field)2026 (meaning under review)

Location & names

Site Nameformer Ascométal steelworks waste storage site

AliasZero Emission Valley (ZEV) - Le Cheylas

Official NameLhyfe Le Cheylas

Additional project information

Administrative AreaLe Cheylas, Auvergne-Rhône-Alpes

CountryFrance

Progress StatusFID / Construction

Capacity (kt H2/y)1.73 kt H2/y

Capacity (Nm³ H₂/h)2,222 Nm³ H₂/h

Capacity (Announced Size)10 MW or 4 t H2/d capacity

Timeline

Construction start : 2024-10-18

Sources & record history

Sources

IEA Hydrogen Projects dataset Shared by 12 fields: Snapshot 2026-06-18 · Confidence: reported · Older value (2026)
Lhyfe Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/)
Lhyfe Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/)
H2Prism earlier record (SRC-C-P200)
Lhyfe A Le Cheylas, Lhyfe pose aujourd’hui la 1ère pierre de son plus grand site de production français d’hydrogène vert
Lhyfe Lhyfe (https://www.lhyfe.com/investors/financial-press-releases/?CLIENT=ACTUS-0-468&ID=ACTUS-0-97296)

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	Zero Emission Valley (ZEV) - Le Cheylas	View exact value `Zero Emission Valley (ZEV) - Le Cheylas`	IEA Hydrogen Projects dataset	—	—
Site Name	former Ascométal steelworks waste storage site	View exact value `former Ascométal steelworks waste storage site`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Administrative Area	FR-38 Isère	View exact value `FR-38 Isère`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Alias	Zero Emission Valley (ZEV) - Le Cheylas	View exact value `[{"kind":"source_label","name":"Zero Emission Valley (ZEV) - Le Cheylas"}]`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Country	France	View exact value `FRA`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Official Name	Lhyfe Le Cheylas	View exact value `[{"lang":"en","name":"Lhyfe Le Cheylas","evidence":["E-01"]}]`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); 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":"electrolysis of water","component_id":"CMP-1"}`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Configuration Detail	Unknown PtX	View exact value `Unknown PtX`	IEA Hydrogen Projects dataset	—	—
Product	H2	View exact value `H2`	IEA Hydrogen Projects dataset	—	—
Project Type	hydrogen production facility	View exact value `hydrogen_production_facility`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); Lhyfe (https://www.lhyfe.com/production-unit/lhyfe-le-cheylas-auvergne-rhone-alpes/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Technology	Other Electrolysis	View exact value `Other Electrolysis`	IEA Hydrogen Projects dataset	—	—
Capacity	10 MW	View exact value `10 MW`	IEA Hydrogen Projects dataset	—	—
Production Volume	Planned hydrogen production capacity of up to 4 tonnes per day at Lhyfe Le Cheylas (October 2024 revised 10 MW design)	View exact value `Planned hydrogen production capacity of up to 4 tonnes per day at Lhyfe Le Cheylas (October 2024 revised 10 MW design)`	A Le Cheylas, Lhyfe pose aujourd’hui la 1ère pierre de son plus grand site de production français d’hydrogène vert		Current
Event	Construction start : 2024-10-18	View exact value `{"date":"2024-10-18","tags":{"as_of":"2024-10-18","source":"Lhyfe press release","evidence":["E-02"],"judged_by":"worker_review","confidence":"high","accessed_at":"2026-08-18T01:39:12Z"},"ev_type":"EV-10","event_id":"V-01","raw_date_text":"18 October 2024","date_precision":"day"}`	Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); 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 value `FID/Construction`	Lhyfe (https://www.lhyfe.com/investors/financial-press-releases/?CLIENT=ACTUS-0-468&ID=ACTUS-0-97296); Lhyfe (https://www.lhyfe.com/press/in-le-cheylas-lhyfe-is-today-laying-the-foundationstone-of-its-largest-green-hydrogen-production-site-in-france-kick-starting-large-scale-production-in-the-auvergne-rhone-alpes-region/); H2Prism earlier record (SRC-C-P200); H2Prism earlier record (SRC-C-P200)		Older value
Administrative Area	Le Cheylas, Auvergne-Rhône-Alpes	View exact value `Le Cheylas, Auvergne-Rhône-Alpes`	IEA Hydrogen Projects dataset	—	—
Country	France	View exact value `France`	IEA Hydrogen Projects dataset	—	—
Progress Status	FID / Construction	View exact value `FID/Construction`	IEA Hydrogen Projects dataset	—	—
Capacity (kt H2/y)	1.73 kt H2/y	View exact value `1.7325333333333333 kt H2/y`	IEA Hydrogen Projects dataset	—	—
Capacity (Nm³ H₂/h)	2,222 Nm³ H₂/h	View exact value `2222.222222222222 Nm³ H₂/h`	IEA Hydrogen Projects dataset	—	—
Capacity (Announced Size)	10 MW or 4 t H2/d capacity	View exact value `10MW or 4 t H2/d capacity`	IEA Hydrogen Projects dataset	—	—

Record history

1 current sourced value · 14 older values · Record updated 4 Oct 2026