Playing with trains: grid level storage

One of the most important aspects of a society powered by renewable will be power storage. Fortunately, we don’t need to wait for new technology, and we don’t need to build huge chemical batteries. There are a number of grid-level storage options available that work off of potential energy alone.

Case in point: Advanced Rail Energy Storage – a company that stores energy by moving heavy trains uphill when there’s excess power, and letting them roll downhill again when more power is needed.

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