Fig. 13
From: High resolution synthetic residential energy use profiles for the United States

Synthetic hot water usage and energy vs. synthetic household size. Household size indicates number of household members. The clustered bar charts show the amount of hot water consumed (in gallons in (a)) and corresponding energy usage in (b) according to household size in a winter day. The vertical black line on each bar shows the variation. Water usage and its variation increases with household size. The amount of energy for hot water end-use increases with household size and differs by region.