THE SUB® has an energy label of "A+". This means this is one of the most efficient appliances within the home draught system category. THE SUB® uses an average of 10 Watts in a “steady state.” This means the home temperature is 20-22°C, the TORP® is pre-chilled to 2°C, and THE SUB® is not pouring. It is comparable to an unopened refrigerator. 10 Watts is the same as a usage of 0,010 kWh per hour. THE SUB® Compact uses an average of 11 Watts in a “steady state”. On an annual basis, when THE SUB® is switched on all year, the energy consumption in the "steady state" is approximately 87.6 kWh.