Energy in Brief articles

How dependent are we on foreign oil?

The United States relied on net imports (imports minus exports) for about 45% of the petroleum (crude oil and petroleum products) that we consumed in 2011. Just over half of these imports came from the Western Hemisphere. Our dependence on foreign petroleum has declined since peaking in 2005.

Who are the major players supplying the world oil market?

The world oil market is complicated. Companies are often thought of as the primary actors in this market, but governments play a large role as well.

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Petroleum Explained

Why are gasoline prices higher in some regions than in others?

Although price levels vary over time, average retail gasoline prices are often highest in certain States or regions. Besides taxes, there are other factors that contribute to regional and even local differences in gasoline prices.

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Biofuels: Ethanol and Biodiesel Explained

What are biofuels?

"Biofuels" are transportation fuels like ethanol and biodiesel that are made from biomass materials. These fuels are usually blended with the petroleum fuels — gasoline and diesel fuel, but they can also be used on their own. Using ethanol or biodiesel means we don't burn quite as much fossil fuel. Ethanol and biodiesel are usually more expensive than the fossil fuels that they replace, but they are also cleaner-burning fuels, producing fewer air pollutants.

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