How do pumped hydro storage facilities work?

Can you explain how pumped hydro storage facilities work?

Sure! Pumped hydro storage facilities use two water reservoirs at different elevations. During low electricity demand, excess energy is used to pump water from the lower reservoir to the upper one. When demand increases, the stored water is released back down to generate electricity.

What are the advantages of using pumped hydro storage?

Pumped hydro storage is highly efficient, can store large amounts of energy, and provides grid stability. It's also a mature technology with a long lifespan.

Are there any environmental concerns with these facilities?

Yes, there can be environmental impacts, such as habitat disruption and changes in water quality. However, careful planning and management can mitigate these effects.

How does it compare to other energy storage methods?

Pumped hydro is one of the most efficient and cost-effective methods for large-scale energy storage, especially compared to batteries, which are better for smaller, short-term storage.