How Much Geological Energy Is From Sunlight?

Hello, new to forum here. I have gotten into many heated debates about how much geological energy begins as sunlight and how much has always been present due to radioactive materials from beyond the solar system. Does anyone know how to approach this issue?

Maybe this sounds strange and/or metaphysical to trained geologists, but Earth seems like an organism where any external solar-powered biological growth can gradually be swallowed and digested to form a vein of fossil fuel. I.e. if a forest grows and drops sediments and those sediments keep building up without a forest fire or development interrupting the process, the forest will keep feeding biomass into the ground and as long periods of geological time pass, the result will be a vein of coal, shale, oil, gas, etc. depending on how the 'digestive' process works deep underground where those sediments are processed and their energy consolidated.

Now I know there are subduction zones where material is dragged down under a crustal plate, and volcanoes usually occur some distance from the subduction zone. To me it seems like the distance between subduction and volcano must have to do with the build-up and digestion/condensation of subducted fuel to the point where there is enough (vertical) energy to boil up. From animations I've seen, it appears that the subducting material curves downward from an initial feed-in angle that's mostly horizontal and gradually grows steeper. This suggests to me that as the angle steepens, there is more potential for energy to rise up through a vertical column and compound, which could result in it boiling up as a column.

Still, I understand that elements heavy enough to fission are not produced by our sun, because its mass is not great enough. A supernova is required to produce these nuclear fuels, so if that's the case then a great deal of the energy in the mantle/core would be due to nuclear fuel arriving from outside the solar system. Still, I wonder what role solar-generated biomass and fuel-fossilization/digestion plays in adding energy to the mantle. Does all subducted energy bubble up as volcanism, or does it also sink deeper and feed the mantle/core energy/heat that doesn't bubble up?

I would like to continue and discuss the subduction of the Indian subcontinent and the creation of the Himalayas, but maybe I should leave that for another thread. First I'd like to find out if others in this forum think about these issues and what you have to say about them. Thanks in advance.