You can go even further. All "natural" processes are completely excluded from primary energy use. If you include the energy used by agriculture (as in: photosy

You can go even further. All "natural" processes are completely excluded from primary energy use. If you include the energy used by agriculture (as in: photosynthesis) you will get a number that human energy use is something like 99% powered by the sun. If you include ambient heat, non-solar energy sources become a rounding error. This may seem obvious and silly, but especially in residential heating using the ambient heat with heat-pumps, solar collectors, large sun-facing triple insulated window fronts, will be key for energy usage reduction. I would recommend the books by Professor Volker Quaschning (well-known climate scientist in Germany), he goes into lots of stuff like this in detail.