Comparison of underwater with conventional pumped hydro-energy storage systems

Dubbers, D.

doi:10.1016/j.est.2021.102283

Cited by 5 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This configuration avoids land use by building a spherical storage cavity in the seabed as a lower reservoir and using the sea as an upper reservoir. Studies estimate that such configuration is cost-effective at a deep ranging from 200 to 800 m [18,20,21]. Due to the massive weight of concrete used for the sphere (over 2 m thickness, over 30 m diameter), installation is as challenging as the size of the system!…”

Section: Sea Reservoir -Sea Reservoirmentioning

confidence: 99%

Prospection of Neighborhood Megawatthours Scale Closed Loop Pumped Hydro Storage Potential

Ouedraogo¹,

Ekim²,

Demirok³

2023

Energy Storage Applications in Power Systems

View full text Add to dashboard Cite

Energy is at the center of the global socio-economical, geopolitical, and climate crisis. For this reason, countries are looking to boost their energy independence through the integration of distributed green electricity. However, the bottleneck of intermittent renewable energy as an alternative to fossil fuel energy remains the high cost of large-scale energy storage. The study explored the existence of megawatt-hours scale closed-loop pumped hydro-storage reservoirs near communities. A MATLAB algorithm has been developed to detect 1, 4, 9 hectares reservoirs with a separation distance less than 1000 meters, and a head over 100 meters, corresponding to an energy capacity of 20 to 400 megawatt-hours per pairs. For the cities studied (Banfora, Syracuse, Manisa), the results revealed the existence of more than 10.000 megawatt-hours storage capacity in each city, which exceed the need of the communities. In the 4 hectares sites category, all cities have over 80 pairs of reservoirs ideal for distributed storage system implementation. Therefore, a 100% renewable energy power grid that is resilient, reliable, can be achieved faster by adopting distributed closed-loop pumped hydro-storage, which has limited environmental impact and is likely to attract a large number of smaller investors.

show abstract

Section: Sea Reservoir -Sea Reservoirmentioning

confidence: 99%

Prospection of Neighborhood Megawatthours Scale Closed Loop Pumped Hydro Storage Potential

Ouedraogo¹,

Ekim²,

Demirok³

2023

Energy Storage Applications in Power Systems

View full text Add to dashboard Cite

show abstract

“…Currently, the technologies that can be used for large-scale energy storage include physical energy storage through the pumped hydro system (PHS), compressed air energy system (CAES) and flywheel energy system (FES), electromagnetic energy storage through superconducting magnetic energy storage (SMES) and supercapacitors (SC), chemical energy storage through fuel cells (FC) and batteries, and thermal energy storage (TES) by heating or melting materials. − Figure gives an analysis of energy storage technologies that can be integrated on a large scale. As of the end of 2020, the cumulative installed capacity of energy storage projects in operation worldwide reached 191.1 GW, of which the cumulative installed capacity of pumped storage was the largest, accounting for 90.3%. − Meanwhile, the installed capacity of electrochemical energy storage (ECS) followed closely behind, accounting for 7.5%, and this information is shown in Figure a and b. Additionally, physical energy storage has the characteristics of mature technology and is large scale. It is mainly realized in the mutual conversion of electrical energy and mechanical energy. , For the ECS, it has become currently the most widely used energy storage technology with the greatest development potential, including lithium-ion batteries (Li-ion), lead-acid batteries (LAB), sodium–sulfur batteries (NaS), and redox flow battery (RFB) energy storage technologies. − To be specific, as of the end of 2020, the cumulative installed capacity of ECS reached 14.2 GW, a year-on-year increase of 49.6%.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Critical Issues in All-Vanadium Redox Flow Battery

Huang

et al. 2022

ACS Sustainable Chem. Eng.

104

View full text Add to dashboard Cite

Vanadium redox flow batteries (VRFBs) can effectively solve the intermittent renewable energy issues and gradually become the most attractive candidate for large-scale stationary energy storage. However, their low energy density and high cost still bring challenges to the widespread use of VRFBs. For this reason, performance improvement and cost reduction of VRFBs are the keys to their commercialization and large-scale energy storage applications. On the basis of this, this perspective briefly describes the development status of renewable energy and energy storage technology and summarizes the existing bottlenecks that affect the development of VRFBs. Meanwhile, the critical technologies of VRFBs are reviewed, and the research progress in recent years and the challenges that need to be overcome are introduced. This perspective focuses on four aspects, including core component material, system modeling, optimization operations, and future business challenges. Then, a comprehensive analysis of critical issues and solutions for VRFB development are discussed, which can effectively guide battery performance optimization and innovation. The views in this perspective are expected to provide effective and extensive understanding of the current research and future development of vanadium redox flow batteries.

show abstract

Subsea energy storage as an enabler for floating offshore wind hydrogen production: Review and perspective

Wang,

Sant

et al. 2024

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Comparison of underwater with conventional pumped hydro-energy storage systems

Abstract: The laws of fluid mechanics imply that modular offshore pumped hydro-energy storage systems like StEnSea have no advantage over similar but much cheaper modular onshore systems.

Cited by 5 publications

References 8 publications

Prospection of Neighborhood Megawatthours Scale Closed Loop Pumped Hydro Storage Potential

Prospection of Neighborhood Megawatthours Scale Closed Loop Pumped Hydro Storage Potential

Comprehensive Analysis of Critical Issues in All-Vanadium Redox Flow Battery

Subsea energy storage as an enabler for floating offshore wind hydrogen production: Review and perspective

Contact Info

Product

Resources

About