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The natural gas network may serve as a buffer for weather-dependent electricity from the wind and sun. This requires economically efficient processes to use electricity for the production of chemical energy carriers. The EU project HELMETH coordinated by KIT has now made an important step, demonstrating that high-temperature electrolysis and methanation can be combined in a power-to-gas process with an efficiency of more than 75 percent.
"For the first time, we used the synergies between electrolysis and methanation and reached an efficiency that exceeds that of standard technologies by about 20 percent," says Dimosthenis Trimis of KIT, coordinator of the HELMETH EU project. "Thanks to the large scope of disciplines covered by our consortium, we managed to reach an important milestone for mastering the energy transition."
Power-to-gas - Facility - Converts - Percent - Energy
A conventional industrial power-to-gas facility converts about 54 percent of the electric energy of renewable power into chemical energy of methane fuel. The prototype of the HELMETH EU project that fits into two conventional sea freight containers of about 6 m length each reached an efficiency of 76 percent in the final measurements. This gives hope for reaching an efficiency of 80 percent on the industrial scale. In parallel, economic efficiency and the climate balance of the new technology...
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