VDI: 100% Supply with Renewable Energy Until 2050 Impossible

A 100% supply with renewable energy until 2050 is impossible, said  the  Association of German Engineers (Verein Deutscher Ingenieure e.V – VDI).

VDI contradicts the differing opinion the advisory committee on environmental issues to the German Parliament (Sachverständigenrat für Umweltfragen – SRU) voiced at the beginning of May. “The SRU statement is economically and technically almost impossible to implement”, commented Prof. Hermann-Josef Wagner, professor for energy systems and energy management at the university of Bochum and chairman of the VDI company energy and environment (VDI-GEU).

“Most realistic scenarios, including the VDI scenario, predict a share of renewables of 40% to 50% in 2050”, he said. SRU’s cost estimates were too optimistic. Besides, its assumption relied on a high share of imported renewable energy and the development of storage facilities that did not exist to date. Neither could the energy supply from Scandinavia be increased indefinitely due to local environmental restrictions, Prof. Wagner said.

According to VDI, fossil power plants will still be needed in 2050. The association calls for a comprehensive and coherent energy concept that takes climate and environment protection aspects, the security of supply and economic aspects into consideration. According to VDI, only an energy mix of all available energy sources can serve all these aims. “Fossil and nuclear energy are still needed until they can be replaced by other energy forms”, Prof. Wagner said without saying when this time will have come.

Source: VDI

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