I often (most often) feel of very low energy. Although depression adds to this, the causes are more than simply depression. I have a few fatiguing illnesses on top of BP II depression.
I keep taking meds, switching meds, using Adderall and "activating" meds and, often, I am still very fatigued (or feeling paralyzed).

You have something medical going on, too. It may play into your fatigue as well?

I hope you feel more energy soon.

WC