Aluminum is the most abundant metallic element in the Earth's crust. Bauxite ore is the main source of aluminum. Aluminum is used in automobiles and airplanes (36%), bottling and canning industries (25%), building and electrical (14%) and in other applications (25%).
A: The average propane consumption per year for whole-house heating is estimated to be between 1200 and 1500 gallons per year for a 2,200 square foot home. However, the amount of propane a household uses varies depending on its specific uses in the household.
The average electricity use of the households who participated in the survey in 2014 was 5,817 kWh per year. This is approximately 12.5 per cent less than those who participated in 2011. Average household electricity consumption has decreased by 12.5% from 2011 to 2014.