The photosphere does not produce power, so attempts to calculate volumetric energy densities there are nonsensical. The power radiated from 1 square meter of t

The photosphere does not produce power, so attempts to calculate volumetric energy densities there are nonsensical. The power radiated from 1 square meter of the sun's surface (63 megawatts) comes from a cross section of the core, far below, that is 250,000 kilometers deep!