ALPHEUS

To decarbonise and slow the rate of global warming, we need to turn to renewable energy such as wind and solar. The current electricity grid, however, is still not able to handle the intermittent nature of these energy sources. Pumped hydropower energy storage can help to maintain and enhance grid flexibility and stability. The EU-funded ALPHEUS project will improve reversible pump/turbine (RPT) technology and adjacent civil structures needed to make pumped hydro storage economically viable in shallow seas and coastal environments with flat topography. It anticipates reaching round-trip RPT efficiency of 0.7 to 0.8 by combining the current state of the art and the expertise of project partners. ALPHEUS will also assess related social and environmental factors, such as fish life, local opinion, and land use.