The Fuel Cost Adjustment Factor is structured as follows:
FCAF = C x (A-B)
D
Where:
FCAF = Fuel Cost Adjustment Factor commonly referred to as Fuel Surcharge
A = the current month's average fuel price (EC$/IG)
B = the average fuel price at base tariff (EC$/IG)
C = Current Month's fuel usage (IG)
D = Current Months Electricity Production (KWH)Fuel Surcharge on bills = Total units consumed * FCAF 
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