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Converting wind power for storage purposes

21.08.2018

In the first half of 2018, wind farms in Germany fed around 55 billion kWh into the power grid. 7 billion more than in the same period last year. Scientists are working to improve conversion and storage technologies to temporarily store surplus wind power. The current BINE Projektinfo “Energiepark Mainz” (05/2018) presents a promising process by way of the world's largest Power-to-Gas research facility. Electrolytic hydrogen is produced using wind power, and is then stored and fed into the natural gas network. The aim is to test the processes and novel components on an industrial scale.

Power-to-Gas plant at Energiepark Mainz with positive interim results


PEM electrolysers in the megawatt range are being used at Energiepark Mainz for the first time. This process can adapt well to electricity fluctuations.

© Siemens, Erich Malter

Systems based on polymer electrolyte membranes (PEM) are used in the electrolytic production of hydrogen at Energiepark Mainz. In the research phase, systems with peak loads of up to 2 MW were used for the first time. At the beginning of the project, the typical output of PEM electrolysers was around 100 kW.

The advantages of this membrane electrolysis method are that the hydrogen involved is very pure, the process requires little maintenance and it can react well to fluctuations in the power grid. In Mainz, the gas is compressed with ionic compressors, stored and fed into the natural gas network or delivered to hydrogen filling stations and industrial plants.

Hydrogen is a versatile chemical energy storage medium and base material. Up to 10 % hydrogen can be added to natural gas, and it can be used directly in industrial production processes while being easy to store.

The electrolysis plant generates up to 1,000 Nm³ of hydrogen per hour, which is fed into the natural gas network for the Mainz-Ebersheim district. The energy park completed the research phase in 2017 and has started normal commercial operation.

You found all informations about the BINE Projectinfo brochure entitled “Energiepark Mainz” (05/2018)” here:

http://www.bine.info/en/press/press-releases/press/pressemitteilung/windstrom-zu...

About BINE Information Service

Energy research for practical applications

The BINE Information Service reports on energy research topics, such as new materials, systems and components, as well as innovative concepts and methods. The knowledge gained is incorporated into the implementation of new technologies in practice, because first-rate information provides a basis for pioneering decisions, whether in the planning of energy-optimised buildings, increasing the efficiency of industrial processes, or integrating renewable energy sources into existing systems.

About FIZ Karlsruhe

FIZ Karlsruhe – Leibniz Institute for Information Infrastructure is a not-for-profit organization with the public mission to make sci-tech information from all over the world publicly available and to provide related services in order to support the national and international transfer of knowledge and the promotion of innovation.
Our business areas:
• STN International – the world’s leading online service for research and patent information in science and technology
• KnowEsis – innovative eScience solutions to support the process of research in all its stages, and throughout all scientific disciplines
• Databases and Information Services – Databases and science portals in mathematics, computer science, crystallography, chemistry, and energy technology
FIZ Karlsruhe is a member of the Leibniz Association (WGL) which consists of 87 German research and infrastructure institutions.

Wissenschaftliche Ansprechpartner:

Uwe Milles - Dorothee Gintars: presse(at)bine.info

Originalpublikation:

The BINE Projektinfo “Energiepark Mainz” (05/2018)
http://www.bine.info/en/publications/projektinfos/publikation/energiepark-mainz/

Rüdiger Mack | idw - Informationsdienst Wissenschaft

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