The intermittent nature of renewable sources like wind and solar leads to mismatches between energy demand and supply, creating instability in the grid. Existing storage solutions are inadequate to store surplus energy during peak production periods for use during low production periods. 

In this context, the EU-funded STORE2HYDRO project offers a promising solution by retrofitting reversible pump turbine technology so that existing hydropower facilities can expand electricity storage capacity by over 22 TWh annually. Overall, the project aims to enhance storage efficiency without altering reservoir or river volumes, aligning with the European Green Deal. This initiative promises more flexible, cost-effective hydropower operations, crucial for integrating intermittent renewable energy sources like wind and solar.

• Norges teknisk-naturvitenskapelige universitet NTNU
• Stiftelsen Norsk Institutt for Naturforskning NINA
• Alma Mater Studiorum - Universita di Bologna
• Technische Universitaet Wien
• Aker Solutions AS
• Vattenfall AB
• Uppsala Universitet