Sunspots, or rather starspots, are cool areas on stars caused by the diversion of electrical energy to drive discharges: -

Sunspots, aka starspots

The Sun cannot be powered from within by thermonuclear processes because breaks in the photosphere would then be blisteringly hot and extremely bright from broiling material beneath. That is NOT witnessed.

Here is a July 2017 quote (edited slightly by NAS) from the Electric Universe's, Stephen Smith (bold and emphasis added) : - 

"The Sun fluctuates in output strength and visible sunspots cross its surface in a cycle that lasts about 22 years. During the past 11 or 12 years, sunspots were predicted to increase based on previous observations, but the Sun remained relatively spot-free past its predicted time. That quiescent period ended when a LARGE solar flare erupted in February 2014, along with powerful shocks from even more energetic regions. It then returned to a more inactive state.

The Sun resides in a “bubble” of positive charge with respect to the interstellar medium, so sunspots and flares most likely result from variations in its electrical supply. Therefore, the Sun might experience cyclic influences involving a galactic circuit. That circuit is of unknown length, but probably includes influences over thousands of cubic light-years. The extent of the electrical energy moving through those “transmission lines” is also NOT known, but mainstream astro scientists are constantly amazed by the power output from solar flares.

The reason that their observations involve words like “unexpected” and “mysterious” is because they do not accept a basic premise of Electric Universe theory: the Sun is an anode, or positively charged terminal, whose heliospheric boundary is an electric double layer that isolates it from the galactic plasmas flowing through the interstellar medium. Since voltage differences occur within the heliosphere, the Sun probably experiences a charge/discharge phenomenon. It is the Sun’s capacitive, resistive and inductive behavior that DRIVES its activity.

Mainstream thinking suggests that “acoustical wave-guides” carry hot gas from inside the Sun. That idea is illustrated by a recent press release from Northumbria University. Astro scientists there announced that they “… have taken a BIG step forward in understanding a 30-year-old mystery in the process of formation of solar flares.” Naturally, their work uses hydrodynamic models to explain how electromagnetic radiation escapes the solar interior! {Think about that nonsense, dear reader.}

An electric Sun, on the other hand, means that electric discharges penetrate its photosphere, allowing electric charge to flow into its depths. It is electromagnetic flux tubes rather than nonsensical acoustical wave-guides that expose the Sun’s cooler interior. Those flux tubes connect the Sun’s electromagnetic environment with Earth’s ionosphere, as well.

Solar flares can increase the brightness and frequency of Earth’s aurorae when they meet its electromagnetic fields, therefore those flares are composed of charged particles. Astro scientists repeatedly refer to ions streaming out of the Sun as a “wind”, and that those atomic fragments “rain down” on Earth. Since they are attracted to and follow Earth’s polar cusps, they are electrical in nature.

Electric Universe advocate, Wal Thornhill wrote that:

“The standard thermonuclear star theory has no coherent explanation for the approximately eleven-year sunspot cycle. In the electrical model, the sunspot cycle is induced by fluctuations in the direct current (DC) power supply from the local arm of the Galaxy, the Milky Way, as the varying current density and magnetic fields of huge Birkeland current filaments slowly rotate past our solar system.”

It is because astro scientists must adhere to the gravicentric paradigm that they need to conjure up 'magical' Harry Potter magnetic fields without electricity to explain the existence of sunspots. How thick can you get?