The internal energy of the Solid Earth is mainly transferred through thermal convection of the
mantle. Here, we discuss the 10 20-J-scale energy relating to the dynamics of the Solid
Earth's interior. The energy released from the interior of the present-day Earth to outer space
per year is estimated as E earth= 1.4× 10 21 J yr− 1 based on the recent dataset of globally
observed crustal heat flow, which is a factor of two or three times larger than the annual
energy consumption of the total population of the world, 5.7× 10 20 J yr− 1. Of the energy …