The continued focus on renewable energy has led researchers to find new and improved long-term energy storage systems. While batteries made from lithium and other minerals have proven useful for energy farms, they are not sustainable, especially on a global scale.
Fortunately, with the continuous investment in research and development, there are potential solutions. These include commercial-scale ‘sand batteries’ from Finland and Switzerland’s 20 million kWh ‘water battery’, which is now operational after 14 years of development.
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