TY - JOUR
T1 - Buoyancy Energy Storage Technology
T2 - An energy storage solution for islands, coastal regions, offshore wind power and hydrogen compression
AU - Hunt, Julian David
AU - Zakeri, Behnam
AU - de Barros, Alexandre Giulietti
AU - Filho, Walter Leal
AU - Marques, Augusto Delavald
AU - Barbosa, Paulo Sérgio Franco
AU - Schneider, Paulo Smith
AU - Farenzena, Marcelo
N1 - Funding Information:
We would like to thank the program UFRG/PRINT/CAPES for the visiting professor grant. The contribution from BZ is funded by IIASA and the RE-INVEST project at Allborg University, Denmark.
Publisher Copyright:
© 2021 The Author(s)
PY - 2021/8
Y1 - 2021/8
N2 - The world is undergoing a substantial energy transition with an increasing share of intermittent sources of energy on the grid such as wind and solar. These variable renewable energy sources require an energy storage solution to allow a smooth integration of these sources. Batteries can provide short-term storage solutions. However, there is still a need for technologies that can provide weekly energy storage at locations without potential for pumped hydro storage. This paper presents innovative solutions for energy storage based on “buoyancy energy storage” in the deep ocean. The ocean has large depths where potential energy can be stored in gravitational based energy storage systems. The deeper the system, the greater the amount of stored energy. The cost of Buoyancy Energy Storage Technology (BEST) is estimated to vary from 50 to 100 USD/kWh of stored electric energy and 4,000 to 8,000 USD/kW of installed capacity. BES could be a feasible option to complement batteries, providing weekly storage cycles. As well as from storing energy, the system can also be used to compress hydrogen efficiently.
AB - The world is undergoing a substantial energy transition with an increasing share of intermittent sources of energy on the grid such as wind and solar. These variable renewable energy sources require an energy storage solution to allow a smooth integration of these sources. Batteries can provide short-term storage solutions. However, there is still a need for technologies that can provide weekly energy storage at locations without potential for pumped hydro storage. This paper presents innovative solutions for energy storage based on “buoyancy energy storage” in the deep ocean. The ocean has large depths where potential energy can be stored in gravitational based energy storage systems. The deeper the system, the greater the amount of stored energy. The cost of Buoyancy Energy Storage Technology (BEST) is estimated to vary from 50 to 100 USD/kWh of stored electric energy and 4,000 to 8,000 USD/kW of installed capacity. BES could be a feasible option to complement batteries, providing weekly storage cycles. As well as from storing energy, the system can also be used to compress hydrogen efficiently.
KW - Cost-benefit analysis
KW - Electricity storage innovation
KW - Energy in islands
KW - Gravitational energy storage
KW - Offshore wind energy storage
KW - Smart grid management
UR - http://www.scopus.com/inward/record.url?scp=85108242746&partnerID=8YFLogxK
U2 - 10.1016/j.est.2021.102746
DO - 10.1016/j.est.2021.102746
M3 - Journal article
AN - SCOPUS:85108242746
SN - 2352-152X
VL - 40
JO - Journal of Energy Storage
JF - Journal of Energy Storage
M1 - 102746
ER -