Sendent maintains the following:

Of all the commercial building types, mercantile and service buildings use the most total energy. Other commercial users of energy include offices, schools, health care and lodging facilities, food establishments, and many others. The top five energy-consuming building categories used about half of the energy consumed by all commercial buildings include the following types of buildings:

• Mercantile and service (15% of total energy consumed by commercial buildings) These include Retail Malls, large stores, and clustered buildings (such as college campuses)
• Office (14% of consumption) Professional and government offices
• Education (10% of consumption) Elementary, middle, and high school
• Health care (8% of consumption) Hospitals
• Lodging (6% of consumption) Hotels