Yes, of course of course duct tape works in a near-vacuum. Duct tape works anywhere. Duct tape is magic and should be worshipped.
You know what? "kilowatt-hours per sol" is a pain in the ass to say. I'm gonna invent a new scientific name. one kilowatt-hour per sol is...it can be anything...um...I suck at this...I'll call it a "pirate-ninja"."
As with most of life's problems, this can be solved with a box of pure radiation.