Recent research from the Australian National University has unveiled a groundbreaking study that explores the untapped potential of pumped storage power plants. These plants could revolutionize how we store and utilize energy, with findings suggesting we could accumulate a staggering 86 trillion kilowatt hours of electricity. This amount of stored energy could comfortably meet global demands, even if worldwide electricity consumption were to double or even triple due to the electrification of transportation, increased industrial production, and heating needs.
An innovative interactive atlas showcases possible locations for these power plants, allowing users to filter options based on size and type. One of the main advantages of pumped storage power plants is that they can be constructed without disrupting existing river ecosystems. These plants require a simple height difference to function, vastly reducing the need for water compared to traditional dams. Moreover, the turbines involved experience less pollution because of the lower sediment content.
In many viable locations, seawater can be utilized, removing the necessity to build a secondary reservoir and essentially eliminating water consumption. These plants boast an impressive lifespan of 60 to 100 years. The financial aspect is also appealing—construction costs hover around $1 billion per gigawatt of capacity, closely aligning with expenses for modern wind and solar infrastructure.
While these plants excel in storing energy with up to 80% efficiency for as long as six months, they do not generate electricity. This means they’re reliant on other power sources, most notably wind and solar. The deployment of these renewable energies has been sluggish, primarily due to episodic production, limited governmental support, and insufficient storage solutions.
However, the potential for widespread, effective electricity storage exists nearly everywhere and on a grand scale—it’s merely a matter of building the necessary infrastructure. While only a few pumped storage power plants currently achieve an output of 1 gigawatt, the science suggests a significant opportunity for expansion that could transform energy storage and utilization globally.
