ElI5 – how does energy work?

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I know that Niagara Falls (for example) produces a huge amount of energy, which we use for various…things that need energy. 🙂 And I assume “use” also includes capturing it somehow, as well as storage and transport. But how does that work? What do we actually do to accomplish all that?

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There is a huge hydroelectric powerplant there. A large part of the water is redirected to a special kind of turbine (basically a small nozzle shooting a high pressure jet of water onto a wheel that starts turning)

That turns a shaft connected to a generator that produces electrical energy. It’s then transported via power lines just like from any regular powerplant

The source of energy here is just the height of the water. Things high up have potential energy that is released when they fall down.

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