Which renewable energy source harnesses the gravitational pull of the moon?

Tidal energy is generated by the gravitational pull of the moon, which affects the Earth's tides. The moon's gravity creates noticeable fluctuations in sea levels, causing water to rise and fall. This movement of water can be harnessed to generate electricity through tidal turbines or barrages. Tidal energy is a reliable source of renewable energy since tidal patterns are predictable and occur consistently, making it an effective option for sustainable energy generation.

Solar energy relies on sunlight, wind energy harnesses the power of moving air, and hydroelectric energy utilizes the flow of water in rivers or dams. While each of these is a form of renewable energy, they do not involve the gravitational effects exerted by the moon, distinguishing tidal energy as the unique answer to this question.