I tended to fill many a Batbox, MFE, or MFSU on just Solar Power. Though I didn't have any overly elaborate mining setups that required a massive amount of continuous power to Macerate or Smelt anything. I tended to do most of the mining by hand. With a Drill or Laser.
Now that I think about it, punching stone with a mechanical hand is much less cool that shooting a laser at it. POWER TOOLS ARE LAME COMPARED TO MINING LASERS!!!