What renewable energy sources are available all the time?

While most renewable energy sources are variable, geothermal and tidal energy can provide consistent and reliable power. Geothermal energy harnesses heat from the Earth's interior, offering a stable energy supply regardless of weather conditions. Tidal energy relies on the gravitational pull of the moon and the sun, creating predictable tidal movements that can be harnessed for electricity generation. Both sources can contribute to a more stable renewable energy mix.