Active Sun quiet sun puts out most of the light we see. It is the underlying, predictable star active sun is the violent eruptions and storms, explosions, etc. Contributes very little to luminosity, but effects can be felt on Earth. The Sun does not spin as a solid body. The differential rotation causes distortion in the magnetic field.
Sunspots come and go.
22 year cycle . There are some times when there are no sunspots for years. Maunder Minimum was 1645-1715 when there were no sunspots. Release matter into space. Energy is there by energy conservation add up the masses of the two nuclei on the left side of the equation, multiply them by speed of light squared to get energy of left side.