Pumped Hydro Storage: Powering the Transition to Renewable Energy
Among various storage technologies, pumped hydro storage (PHS) stands out as a proven, large-scale solution that can support the integration of renewable energy sources. This blog explores how pumped hydro storage is pivotal in powering the transition to renewable energy.
Understanding Pumped Hydro Storage
The Pumped Hydro Storage is a method of storing energy by using two water reservoirs at different elevations. When there is excess energy, typically from renewable sources like wind or solar, it is used to pump water from the lower reservoir to the upper reservoir. During periods of high energy demand, the stored water is released back to the lower reservoir, passing through turbines to generate electricity.
This system essentially acts like a giant rechargeable battery, storing energy in the form of gravitational potential energy and releasing it when needed. PHS is highly efficient, with an energy conversion efficiency ranging between 70% and 85%.
Reliability and Longevity
Pumped hydro storage systems have been in operation for over a century, demonstrating exceptional reliability and longevity. Unlike some newer energy storage technologies, PHS facilities can operate for 50 to 100 years with proper maintenance. This makes them a stable backbone for energy storage infrastructure.
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