Investigating the potential role of pumped hydro storage in the Ethiopian energy system using OSeMOSYS

Ethiopia’s energy demand is expected to increase sevenfold in the coming 30 years, resulting in increased variable renewable electricity (VRE) production by solar PV and wind. Energy storage acts as a buffer that mitigates the effects of over- or under-capacity in production by VRE. With 97% of global bulk energy storage, pumped hydro storage is...

Low-head pumped hydro storage: A review of applicable technologies for design, grid integration, control and modelling

To counteract a potential reduction in grid stability caused by a rapidly growing share of intermittent renewable energy sources within our electrical grids, large scale deployment of energy storage will become indispensable. Pumped hydro storage is widely regarded as the most cost-effective option for this. However, its application is...

Low-head pumped hydro storage: A review on civil structure designs, legal and environmental aspects to make its realization feasible in seawater

The energy transition requires large-scale storage to provide long-term supply and short-term grid stability. Though pumped hydro storage is widely used for this purpose, regions without natural topography do not have the potential for traditional high-head pumped hydro storage. To address this, multiple projects for low-head and seawater...

Feasibility Analysis of Subsea Pumped Hydro Storage Plant

Renewable energy sources, such as wind energy, are gaining a lot of traction across the world. India intends to improve the amount of wind energy integration into the national electricity system. Wind/solar energy's major drawback is its inherent changeability and source unpredictability, making it a challenging resource to dispatch.<br/><br/>A...

Delta21: Improved Design of the Turbine-Pumping Station

A changing climate means that the combination of storm surge and river flood waves is becoming increasingly likely. The turbinepumping station of the Delta21 concept, is designed just for that. The energy storage lake and the pumps capable of up to 10,000 m3/s mean that even the highest river discharges can be sluiced to the North Sea in the...

Feasibility study on small-scale Pumped Hydro Storage for isolated mini-grids in a low-resource setting

A large portion of the global population, mostly in the Sub-Saharan African region, still has no access to electricity. Due to the remoteness and limited accessibility of some communities, off-grid solutions such as mini-grids are required to electrify these regions. An essential part of such an isolated mini-grid is the energy storage system....

Risk mitigation and investability of a U-PHS project in the Netherlands

We review the status of a 1.4 GW, 8 GWh underground pumped hydro storage (U-PHS) project in the southern Netherlands, which has been under development since the 1980s. Its history shows how the prospect of a large-scale U-PHS for The Netherlands (a country whose proverbial flatness prohibits PHS) has been attractive in every decade, based on...

Cost-optimal electricity systems with increasing renewable energy penetration for islands across the globe

Cost-optimal electricity system configurations with increasing renewable energy penetration were determined in this article for six islands of different geographies, sizes and contexts, utilizing photovoltaic energy, wind energy, pumped hydro storage and battery storage. The results of the optimizations showed strong reasoning for islands to...

Pumped Hydro Storage: Pressure Cavern

The current Dutch electricity market is changing rapidly. New energy agreements demand 40% of Dutch electricity to be produced by renewable sources. This will complicate the link between supply and demand. Where demand used to be the only unknown, also a large part of the electricity supply will become less certain. It is necessary to be able to...