It's possible if you can find cheaper way to power your gear. It's possible if you can find a really discounted price on batteries, solar panels and charge regulator. You could have it only run when the battery charge is high enough and save on buying more batteries, just have it mining when there is free power.

Don't forget that you won't have to tell the world you own those coins you mine either. No-KYC sats via mining is the most invisible way to acquire sats without giving a pint of blood.