SCB runs on two brewing systems. 

The indoor unit runs on a 5 gallon electrical system that is vented to the outside.

A homemade electronic regulator for the pump, heating element and wort temp.

Homemade yeast starter.

A counter-flow chiller can quickly drop the temperature of boiling wort to yeast-pitching tolerances.

A fancy new mash recirculator.

And a grain grinder, using lithium drill batteries as a power source.