Vacuum Panel Insulation For Refrigerator Freezer

Expensive - needs to be custom built - only sensible in chest no upright configuration but oh god does it ever kick the daylights out of the energy bill!

An eighteen cubic foot freezer can keep temps at -25c in 40c ambient temps for 90 amp hours worth of 12-volts. The chest freezer part is a drag but baskets could be used.