Fig. 3.

Appliance-level electricity measurements (n = 490,994 hourly kWh observations, 118 apartments). Plug load is the largest share of household electricity use. The average kWh consumption is 230.4 kWh/mo across one-, two-, and three-bedroom units ranging from 595 to 1,035 square feet. Appliance-level data for multifamily residences in this study are among the first field demonstrations of comprehensive appliance-level metering capabilities not previously available. Results above represent a weighted average of all household electricity uses obtained by direct measurement and are not based on engineering estimates by modeling.