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Start of "Underground Sun Conversion – FlexStore" project

Start of "Underground Sun Conversion – FlexStore" project

From December 2020, the “Underground Sun Conversion – Flexible Storage” (USC-FlexStore) project will investigate seasonal storage of large quantities of renewable energy to be made available year round.

This innovative international project is carried out with Swiss partners under the leadership of Energie 360°. It aims at developing a seasonal, high-volume transformation and storage solution for erratic renewable generation. Energy will be stored safely in gaseous form in underground facilities at depths of over 1,000 metres.

The aim of the project is to take RAG Austria AG’s patented “Underground Sun Conversion” (USC) technology (which involves methanation of CO2 and green H2) to the next level, and to design services based on it. Field tests are planned at RAG’s research facility in Pilsbach (Upper Austria).

Press release 22 January 2021

“Underground Sun Conversion – Flexible Storage”: sustainable storage for the renewable energy system of the future

“Underground Sun Conversion – Flexible Storage”: sustainable storage for the renewable energy system of the future

The “Underground Sun Conversion – Flexible Storage” (USC-FlexStore) project aims at developing a seasonal, high-volume transformation and storage solution for renewable generation.

In collaboration with Swiss energy supplier Energie 360° and research partners (WIVA P&G, BOKU Vienna, Empa, University of Bern, OST) working on this multi-disciplinary, transnational project, know-how and specific capabilities will be bundled. The research will focus on devising solutions to one of the biggest challenges facing the energy system of tomorrow: how to expand fluctuating generation of renewables such as wind and solar power while at the same time maintaining high levels of security of supply, especially in winter, when the possibility of generating power is low and demand is high?

The project