WELTEMP, Water electrolysis at elevated temperature
WELTEMP, Water electrolysis at elevated temperature is a hydrogen project using Elevated-temperature PEM water electrolysis; status: completed.
Overview
Statuscompleted
Country · regionGermanyInternational Energy Agency · as of 2026
TechnologyElevated-temperature PEM water electrolysis
Producthydrogen
Capacity1 kW prototype electrolyser (planned objective)
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
Componentselectrocatalytic materials, polymeric membranes, metallic construction materials, membrane-electrode assemblies, prototype stack
Configuration Detailsteam electrolysis at ambient or low pressure with proton-conducting acidic membranes, pressurized-water electrolysis with proton-conducting acidic membranes, pressurized-water electrolysis with alkaline polymeric electrolytes
Project GroupFP7-ENERGY-2007-1-RTD
Project TypeEU FP7 collaborative research project
Capacity & economics
FinancingEU contribution €2,377,940
Production Volume320 NL/h hydrogen production (planned objective at 80% efficiency, LHV basis)
Status & timeline
Lifecycle Stageclosed
Eventstart : 2008-01-01; end : 2011-04-30
Date online (tracker field)2008 (meaning under review)International Energy Agency · as of 2026
Location & names
External Identifier212903
Official NameWater Electrolysis at Elevated Temperatures
Additional project information
Progress StatusDemoInternational Energy Agency · as of 2026
ProductH2International Energy Agency · as of 2026
TechnologyPEMInternational Energy Agency · as of 2026
Timeline
No recorded project events.
Sources & record history
Sources
- European Commission, CORDIS Water Electrolysis at Elevated Temperatures | WELTEMP | Project | Fact Sheet | FP7
- International Energy Agency IEA Hydrogen Projects dataset Shared by 5 fields: Snapshot 2026-06-18 · Confidence: reported · Older value (2026)
- European Commission, CORDIS Water Electrolysis at Elevated Temperatures Shared by 7 fields: Current
- European Commission, CORDIS Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) Shared by 6 fields: Current
- Technical University of Denmark, Department of Energy Conversion and Storage PEM Water Electrolysis at Elevated Temperatures
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 | WELTEMP, Water electrolysis at elevated temperature | View exact valueWELTEMP, Water electrolysis at elevated temperature | Water Electrolysis at Elevated Temperatures | WELTEMP | Project | Fact Sheet | FP7 | Current | |
| Country | Germany | View exact valueGermany | IEA Hydrogen Projects dataset | — | — |
| External Identifier | 212903 | View exact value212903 | Water Electrolysis at Elevated Temperatures | — | |
| Official Name | Water Electrolysis at Elevated Temperatures | View exact valueWater Electrolysis at Elevated Temperatures | Water Electrolysis at Elevated Temperatures | — | |
| Components | electrocatalytic materials, polymeric membranes, metallic construction materials, membrane-electrode assemblies, prototype stack | View exact value["electrocatalytic materials","polymeric membranes","metallic construction materials","membrane-electrode assemblies","prototype stack"] | Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) | — | |
| Configuration Detail | steam electrolysis at ambient or low pressure with proton-conducting acidic membranes, pressurized-water electrolysis with proton-conducting acidic membranes, pressurized-water electrolysis with alkaline polymeric electrolytes | View exact value["steam electrolysis at ambient or low pressure with proton-conducting acidic membranes","pressurized-water electrolysis with proton-conducting acidic membranes","pressurized-water electrolysis with alkaline polymeric electrolytes"] | Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) | — | |
| Product | hydrogen | View exact valuehydrogen | Water Electrolysis at Elevated Temperatures | — | |
| Project Group | FP7-ENERGY-2007-1-RTD | View exact valueFP7-ENERGY-2007-1-RTD | Water Electrolysis at Elevated Temperatures | — | |
| Project Type | EU FP7 collaborative research project | View exact valueEU FP7 collaborative research project | Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) | — | |
| Technology | Elevated-temperature PEM water electrolysis | View exact valueElevated-temperature PEM water electrolysis | PEM Water Electrolysis at Elevated Temperatures | Current | |
| Capacity | 1 kW prototype electrolyser (planned objective) | View exact value1 kW prototype electrolyser (planned objective) | Water Electrolysis at Elevated Temperatures | — | |
| Financing | EU contribution €2,377,940 | View exact valueEU contribution €2,377,940 | Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) | — | |
| Production Volume | 320 NL/h hydrogen production (planned objective at 80% efficiency, LHV basis) | View exact value320 NL/h hydrogen production (planned objective at 80% efficiency, LHV basis) | Water Electrolysis at Elevated Temperatures | — | |
| Event | start : 2008-01-01; end : 2011-04-30 | View exact value[{"date":"2008-01-01","event":"start"},{"date":"2011-04-30","event":"end"}] | Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) | — | |
| Event | Date online : 2008 | View exact value{"date":"2008","date_precision":"year","event":"Date online","basis":"iea_hydrogen_projects_raw.csv"} | IEA Hydrogen Projects dataset | — | — |
| Lifecycle Stage | closed | View exact valueclosed | Water Electrolysis at Elevated Temperatures | — | |
| Progress Status | completed | View exact valuecompleted | Final Report Summary - WELTEMP (Water Electrolysis at Elevated Temperatures) | — | |
| Progress Status | Demo | View exact valueDEMO | IEA Hydrogen Projects dataset | — | — |
| Product | H2 | View exact valueH2 | IEA Hydrogen Projects dataset | — | — |
| Technology | PEM | View exact valuePEM | IEA Hydrogen Projects dataset | — | — |
Record history
14 current sourced values · 2 older values · Record updated