Gravity storage in an aquatic environment
DOI: 10.13140/RG.2.2.33141.44006
Description and figures
Gravity storage would be significantly easier in an aquatic environment, where the water depth acts as a structure, and uncalibrated sandbags are sufficient to provide the necessary mass. Variants with hydrogenerators are also described, but they are more complex, expensive, and probably less efficient. In pumped-storage hydroelectric plants, water falls onto the turbines and drives them. In gravity storage using hydrogenerators as masses, the turbines themselves descend into the water, rotating and generating electricity. These storage methods can be combined with electricity production using kites in pumping (yo-yo) mode.
See also Latest gravity storage article.