oa Underground Sun Storage Results and Outlook

To find a storage system that can make renewable energy baseload capable and provide seasonable large scale storage RAG Austria AG initiated the Underground Sun Storage project. The research done in this project should prove the feasibility of storing hydrogen in depleted natural gas reservoirs just like commercial natural gas storages. The project was financed by RAG Austria AG and funded by the Austrian Climate and Energy Fund. It could be found that the storage of hydrogen in RAG's reservoirs is possible and furthermore that even generation of renewable methane in the subsurface might be feasible on an industrial scale.