Manufacturers may conduct a number of energy-management activities to improve the efficiency of energy use. In the aluminum industry, the top four reported activities in 1998 included electricity load control, the purchase of electricity under special rate schedules (e.g., time-of-use rates), power factor correction or improvement and compressed air systems. Overall, about 56% of the aluminum industry population reported engaging in at least one energy-management activity in 1998. [MECS 1998]

Source: MECS 1998

* Value is for “All” only; value for “Some” was withheld
W = Value withheld to avoid disclosing data for individual establishments
Q = Withheld because Relative Standard Error is > 50%