Energy Used to Anodize Aluminium

VJF, Anodizing is done by amps per square foot of surface area .. not by weight. The amperage depends on what type of anodizing you are applying, it can range from 15-50 (typically) amps per square foot. And, of course, you need a rectifier capable of maintaining voltage, because, as anodizing is dielectric, your volts will need to increase to maintain your desired amperage setting.

Depends on the process and the parameters honestly. It can differ by more than just a little bit. "Standard" (I put it in quotes cause in my opinion, there is not real standard) Sulfuric Acid Anodizing process 14-18 amps/sq.ft are typical, in sulfuric hardcoat anodizing 28-40A/SQ.FT is typical.

If you knew the total footage of said material, for example you had a 10 ft part of 6061-T6 that weighed around 1.02 lbs/ft you could calculate pretty darn close exactly how much "energy" is used. Define energy for me by the way...do you mean electrical energy as in kwH, or energy as is "amount of effort necessary to accomplish a task", not necessarily kwH, but maybe horsepower.

My brain must be fried I can't remember the technical definition of energy. I remember Ohm's Law E/I=R or was it I/E=R :-)