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by wwalser 3585 days ago
Gravity isn't an energy or a source of energy. It's more like a spring or magnet than sunlight or heat. Gravitational forces can be used to store energy, similar to compressing a spring. Bill Gates talks about this principle toward the end of an interview about his energy investments[1].

1. https://www.youtube.com/watch?v=RH5Lgv-4te8