Energy storage similar to pumped storage

What is the difference between long-term storage and pumped hydro storage?

For long-term deployment, the picture changes. While pumped hydro storage remains a viable option, other storage systems like compressed air and hydrogen may become more cost-effective. For medium-term deployment, there are reductions in LEC of around 40% for pumped hydro, 45% for compressed air storage and 70% for hydrogen storage.

What are the different types of energy storage technologies?

This chapter provides an overview of energy storage technologies besides what is commonly referred to as batteries, namely, pumped hydro storage, compressed air energy storage, flywheel storage, flow batteries, and power-to-X technologies.

How can a long-duration energy storage system be improved?

Addressing these challenges requires advancements in long-duration energy storage systems. Promising approaches include improving technologies such as compressed air energy storage and vanadium redox flow batteries to reduce capacity costs and enhance discharge efficiency.

What is pumped hydroelectric storage?

Pumped hydroelectric storage (PHES) is one of the most common large-scale storage systems and uses the potential energy of water. In periods of surplus of electricity, water is pumped into a higher reservoir (upper basin).

Do pumped storage plants outperform other storage technologies?

Pumped storage plants outperform other technologies analyzed in terms of Levelized Electricity Cost (LEC) if designed as short or medium storage. There is plenty of technical potential for all analyzed storage technologies in Lower Saxony, a federal state in Northern Germany.

Which storage technology is best for long-term storage?

For long-term energy storage, compressed air storage is the most favorable technology today, followed by hydrogen storage. However, by 2030, hydrogen storage technologies significantly reduce their levelized energy cost (LEC), making them more competitive for long-term storage.