Which energy source is non-renewable?

Geothermal energy harnesses heat from the Earth’s internal processes, which is continuously replenished by natural geological activity. As a result, it is considered a renewable energy source, as it can provide a sustainable supply of energy as long as the Earth exists.

Solar energy is generated from sunlight, which is an abundant and inexhaustible resource. The conversion of solar radiation into electricity or heat is sustainable, making it a key renewable energy source that can be utilized indefinitely as long as the sun shines.

Hydroelectric energy is produced by harnessing the power of flowing water, typically through dams. Since water cycles through the environment via evaporation and precipitation, hydroelectric power is renewable and can be generated as long as water sources are available.