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Takeaways:
- A gravity battery uses the power to lift a heavy weight either high into the air or to the top of a deep shaft. Then when the power is needed, winches gradually lower the weight.
- The benefits of a gravity battery are that it’s free, clean and easily accessible, without the complications of producing hydrogen.
- Gravitricity is a company trying to build on the concept of pumped hydro, which involves pumping water uphill and letting it flow down when needed.