Air could be the world’s next Battery

Source phys.org 

Air could be the world’s next battery

The least expensive method is to use hydropower reservoirs as ‘batteries’: i.e. generate electricity using the stored water, when power is in short supply, and subsequently pump the water back uphill when surplus renewable energy is available. However, this is a practical solution only in mountainous regions, such as we have in Norway and a few other countries.

From our very good friends over at phys.org

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