Gravity can be harnessed for electric energy primarily through hydroelectric power, where falling water drives turbines to generate electricity. A standalone system that generates energy solely from gravity without an input source, like a waterfall, contradicts the first law of thermodynamics. The largest hydroelectric plants can produce around 20,000 MW, with various smaller capacity plants also available. For further information, resources on hydroelectric power can be found online. Understanding these principles is essential for exploring the potential of gravity as an energy source.
