Storing renewably electricity as natural gas

German researchers have succeeded a technology  in storing renewable electricity as natural gas. They convert the electricity into synthetic natural gas with the aid of a process.  In the future they would like to store surplus electricity, such as from wind or solar energy, as climate-neutral methane, and store it in existing gas storage facilities and the natural gas network.

Throughout the world electricity generation is based more and more on wind and solar energy. As the wind is blowing powerfully, wind turbines generate more electricity than the power grid can absorb.

The missing link for integrating renewable energy into the electricity supply is a smart power storage concept.

The proces storing green electricity was developed by the Center for  Solar Energy and Hydrogen Research Baden-Wurttemberg (ZSM) in cooporation with the Fraunhofer Institute for Wind Energy and Energy System Technology  (IWES).  One advantage of the technology: it can be use the natural gas infrastructure. The storage reservoir of the natural gas network extending through Germany is vast: it equals more than 200 terawatt hours, enough to satisfy consumption for several months.

Starting in 2012 researchers  intend to launch a system with the capacity of approximately 10 megawatt.

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