GFZ German research centre for geo sciences

Patent issued: System and Method for Ecologically Generating and Storing Electricity

Patent issued: System and Method for Ecologically Generating and Storing Electricity
21.05.2014: The integration and further development of the energy supply system in Europe is a major challenge for the years to come. The innovative idea patented is based on an extension of the power-to-gas-to-power technology by establishing a closed carbon dioxide cycle.

Patent issued: System and Method for Ecologically Generating and Storing Electricity
21.05.2014: The integration and further development of the energy supply system in Europe is a major challenge for the years to come. The innovative idea patented is based on an extension of the power-to-gas-to-power technology by establishing a closed carbon dioxide cycle.

Thereto, hydrogen generated from excess renewable energy is transformed into methane for combustion in a combined cycle gas power plant. To comply with the fluctuating energy demand, carbon dioxide produced during methane combustion and required for the methanation processes as well as excess methane are temporarily stored in two underground reservoirs located close to each other. Consequently, renewable energy generation units can be operated even if energy demand is below consumption, while stored energy can be fed into the electricity grid as energy demand exceeds production.

Patent-Nr. DE 10 2012 103 458

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