Define "renewable"
Most/all renewable power is based on nuclear reactions. Wind is powered by heating of the atmosphere by the Sun, waves are generated by wind and solar is self explanatory. About the only form of renewable power that could be significant and is not generated by the giant nuclear fusion reactor at the centre of our solar system is tidal, and even that is gravitationally influenced by the sun. These renewables are only renewable on the scale of the several billion years the sun has left. The reactions which power the sun are far more "renewable". Geothermal relies on the heat from the Earth's core. Some of which is ancient, some comes from nuclear decay. Not as "clean" as the sun whose hydrogen-deuterium reactions produce helium nuclei as a waste product, the decay of natural elements like uranium produce all sorts of unhealthy by-products.