The Pan-European BioCat Consortium has unveiled its commercial scale power-to-gas demonstration project in Denmark.

Using excess wind energy, the 1MW facility will produce pipeline-grade renewable gas for storage in the Danish natural gas grid.

The DKK49.9m (€6.7m) worth BioCat project is located at the wastewater treatment plant Avedøre in Copenhagen and will be the largest power-to-gas facility based on biological methanation in the world, once operational.

Electrochaea CEO Mich Hein said the renewable gas, once in the grid, can be stored for long periods of time, transported geographically via existing pipelines, and used for power production, in transportation or for heating applications in households and industry.

"As such, power-to-gas represents a powerful solution, not only for the energy storage challenge but also for decarbonising the transportation sector," Hein said.

The project "Power-to-Gas via Biological Catalysis (P2G-BioCat)" involves designing, engineering, constructing and testing a 1MW power-to-gas facility.

"The facility will be operated according to an optimised trading strategy."

Electrochaea Business Development BioCat project manager and vice-president Dominic Hofstetter said, "The facility will be operated according to an optimised trading strategy developed with a view toward maximising value capture and mimicking the intermittent nature of wind and solar energy."

The project objectives also include the delivery of frequency regulation services to the Danish power grid as well as recycling of heat and oxygen in the on-site wastewater treatment processes.

Kim Behnke, Head of Environment, Research and Development at, remarks: "We finally have the ability to link Denmark’s abundant wind resource with its modern gas infrastructure by producing eco-friendly gas from wind energy."

The Pan-European consortium comprises Electrochaea, Hydrogenics Europe, AUDI AG, NEAS Energy, HMN Gashandel, BIOFOS, Insero Business Services and

Gas production is scheduled to commence by the middle of 2015 while the project is planned to conclude by December 2015.

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