my understanding of free energy and entropy is that as entropy of a system increases its free energy decreases. As sun has free energy and this energy is being converted to useful work, and its entropy is increasing. Its entropy will continue to increase till its material is exhausted to cease free energy production.
Can permanent magnets be a source of free energy? The question arises because magnets are permanent dipoles that lose their orientation very slowly to become disordered and increase its entropy.