See if this helps... 25 KW for 2 min = 0.833 KWH (kilowatt/hour). This produces 50 grams. Each barrel would take 0.833 KWH x (144000/50) = 2565 KWH/barrel Industrial KWH rate, according to EIA is $0.0653 / KWH So the barrel price for the electricity = 2565 * 0.0653 = $167.00