Accelerating variable renewable energy integration introduces substantial operational challenges to modern power grids. Frequent curtailment of surplus renewable generation highlights the pressing need for long-duration energy storage capable of shifting generation to high-demand periods while providing essential ancillary services and grid inertia. Socio-environmental constraints increasingly limit conventional hydropower development; however, closed-loop pumped-storage hydropower (PSH) presents a viable alternative because its off-river reservoirs avoid natural watercourses. This paper introduces HERA-S, a computational modeling framework developed by PSR (supported by EDF, CTG, Brookfield, and Rio Light) to streamline and standardize regional PSH site prospecting. HERA-S automates spatial screening, dam optimization, cost estimation, and socio-environmental impact scoring. Applied to a case study in Rio de Janeiro, Brazil, the framework employs an integer programming model to optimize dam-fill and excavation mass balances against inter-reservoir distance, significantly improving pre-feasibility planning agility.
This paper develops a life-cycle optimization model for the collector system (CS) of deep-sea co-located energy farms (CEFs), where co-located energy turbines (CETs) integrate wind, photovoltaic (PV), and tidal current resources across sea-area layers. The model captures multi-layer marine-space complementarity, wake e...
Wen-Hao Gao, Wei-Tai Xu, Yunfei Du et al.· 0 citations
The decarbonization of multi-energy coupled ports necessitates addressing the complex interplay between renewable energy fluctuations and flexible load management. However, existing research has clear limitations in describing multi-source uncertainties and clarifying the synergistic mechanism of electro-hydrogen energ...
The integration of variable renewable energy sources reduces greenhouse gas emissions but introduces significant operational challenges to modern power systems. Grid-scale energy storage systems provide the essential flexibility required to mitigate these short-term uncertainties. Furthermore, these technologies enable...
L. S. Nepomuceno, A. N. de Paula, E. J. de Oliveira et al.· IEEE Access· 0 citations
As Cuba advances toward ambitious renewable energy targets, large-scale energy storage is essential to ensure grid stability and operational flexibility. Pumped Hydro Energy Storage (PHES) is the most mature technology for providing long-duration storage. This study proposes an integrated GIS-based screening and engine...
Leonardo Peña-Pupo, J. Luukkanen, Y. Majanne et al.· Energies· 0 citations
The increasing penetration of wind and solar resources into the power grid motivates the integration of flexible technologies to dynamically shift power loads in response to grid volatility and emergency events. The water electrolyzer presents a synergistic opportunity to provide flexibility through demand response (DR...
Kiernan X. Jennings, Victor M. Zavala, S. Avraamidou· 1 citation
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