The coolest new energy storage technologies

SueEllen Campbell | Source: Yale Climate Connections | Posted 05/06/2025

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Renewable energy needs backup storage. From rust to sand to gravity, new techniques are making it happen.

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As renewable energy sources like solar and wind become more prevalent, effective energy storage solutions are essential for managing power supply during periods of low generation. Various innovative technologies are emerging, including iron-air batteries, which show promise for large-scale energy storage, and hydrogen gas production from excess clean energy, known as green hydrogen. This hydrogen can be stored and later used to generate energy with reduced pollution compared to traditional natural gas.

Other notable energy storage methods include pumped hydro storage, which utilizes water reservoirs at different elevations to generate electricity, and gravity-based systems that leverage weights, such as abandoned mine shafts or even elevators in skyscrapers, to store energy. Additionally, thermal energy storage techniques, such as heating materials like sand or utilizing geothermal heat, are being explored to enhance energy efficiency. These diverse approaches highlight the ongoing advancements in energy storage technologies, crucial for a sustainable energy future.

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Source Link: https://yaleclimateconnections.org/2025/05/the-coolest-new-energy-storage-technologies/

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The coolest new energy storage technologies

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