Read your power company rate schedules! Dropped my mining bill by almost half.

The standard rate schedule in my area is $0.13/kWh after all taxes and fees. I was able to call in and request a switch to what they call the "Residential demand" rate schedule in my area which dropped it to $0.07/kWh after all taxes and fees. That includes the demand charges. This is on Xcel energy but their rates vary by state so you'll have to check yourself.

Eth donations: 0x73ef2ae9702a3c986158449a55c854a46f5964be