Electricity consumption in USA

The United States of America is the largest energy consumer in the world, consuming 100 quadrillion or 105 exajoules (in 2005). The U.S. ranks seventh in energy consumption per-capita after Canada and a number of small countries. In the late 1800s, the major energy production in United States was focused on its abundant forest wood. Rapid industrialization of the economy, urbanization, and the growth of railroads led to increased use of coal, and by 1885 it had eclipsed wood as the nation's primary energy source. In 1950s the Natural gas, which is clean and easy to transport, has replaced coal as the preferred source of heating in home and other large scale. In the beginning of 20th century petroleum was used to manufacture lubricants and the kerosene and the fuel for the night lamps. After a century it has become the prominent source for the US and the rest of the world. From starting of the 1930s rise in the demand of petroleum is always paralleled the emergence of the automobile as major force in American economy. Today 2/3rd of oil consumption in US is in the form of its derived transportation fuels. According to the U.S. Department of Energy the national energy consumption is divided in 4 sectors; industrial, transportation, residential and commercial. By consuming about 33% of the total, industrial sector is country’s largest energy consumer. It is then followed by transportation sector, next in the line are residential sector and the commercial sector.

sector summary
Industrial sector - The largest organization in United States that is used for producing and
processing goods.
> 22% chemical energy
> 16% petroleum
>14% metal refining

Transportation sector - vehicle which transport people/goods on air, ground or water.
> 61% gasoline fuel
> 21% diesel fuel
> 12% aviation fuel

Residential sector - living quarter for private households.
> 32% space heating
> 13% water heating
> 12%lighting
> 11%air conditioning

Commercial sector - Service providing facilities and equipment like businesses, government and
other institutes.
> 25% lighting
> 13%heating
> 11% cooling



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