Geothermal, which at this point in geological history mostly comes from decaying radioactive elements. It’s of minor industrial importance, but it fuels undersea vent ecosystems, and does see some use in traditional cultures.
Speaking of radioactive elements, our nuclear generators all run on energy trapped from ancient cosmic catastrophes. Probably colliding neutron stars, for the most part. Hydrogen fusion has been made to happen for research and in atomic bombs - although interestingly we can’t use the same kind as the sun does.
Tidal energy is used for some power generation, and it comes from the kinetic energy left in the Moon, and to a lesser degree the Earth itself, from the formation of the solar system.