Gasoline is the bloodline that keeps America moving. Our personal vehicles alone guzzle 65 billion gallons of gasoline and diesel fuel each year, and that number is projected to increase by 2.6 percent each year.
Tracking gas prices can feel like a roller coaster ride. They're down a little one month, up the next, before shooting up more than 30 percent in a year. Plus, they're different depending on where you look. Other countries, and even other states and cities, can have very different gas prices from your local Gas-N-Go. To the average person, it probably seems as though there's little rhyme or reason to how gas prices are determined. In this article, we will look at the forces that impact the price of gas at the pump, and we'll find out where your gas money actually goes.
Americans have an insatiable thirst for gasoline, and with sport-utility vehicles (SUVs) continually growing in popularity we are only getting thirstier. Just look at the roads and highways and you'll see that a severe gas shortage would practically cripple the country. Americans drive more than 2.5 trillion miles per year in automobiles, light trucks and SUVs, according to a MEMA report. That's equal to 14,000 round trips to the sun. Today, we drive almost twice as much as we did in 1980 (1.5 trillion miles).
Photo courtesy Phillips Petroleum Company
A gas station in Colorado Springs, CO
Historical Gas Prices
(Adjusted for inflation)
Year Price Per Gallon
1950 $1.91
1955 $1.85
1960 $1.79
1965 $1.68
1970 $1.59
1975 $1.80
1980 $2.59
1985 $1.90
1990 $1.51
1995 $1.28
2001 $1.66
2002 $1.31
2003 $1.52
2004 $1.79
2005 $2.28
2006 (so far) $2.68
Source: U.S. DOE
The United States consumes an average of 20 million barrels of oil per day (bbl/d, according to the Department of Energy. Of that, about 45 percent is used for motor gasoline. The rest is used for distillate fuel oil, jet fuel, residual fuel and other oils. Each barrel of oil contains 42 gallons (159 L), which yields 19 to 20 gallons (75 L) of gasoline. So, in the United States, something like 178 million gallons of gasoline is consumed every day.
Typically, the demand for gas spikes during the summer, when lots of people go on vacation. Holidays like Memorial Day and the Fourth of July create logjams of tourist traffic during the summer. This high demand usually translates into higher gasoline prices, although that's not always the case. For instance, while gas prices soared 31 cents in April and early May of 2001, reaching $1.71 per gallon (which now seems inexpensive compared to today's prices), prices actually declined during the 2001 summer.
In 2004, prices continued to rise past the end of the summer travel season for a variety of reasons, including several hurricanes and an increase in the price of crude oil. And in 2005, Hurricane Katrina (along with a sizeable increase in crude oil prices) pushed prices to $3.07 per gallon on September 5, 2005. Prices settled down somewhat in November and December of 2005. But now the numbers are climbing again, with an average price for regular unleaded gas at $2.90 right now (May 2006).
Price increases generally occur when the world crude-oil market tightens and lowers inventories. We will discuss who controls the crude-oil market later. Also, growing demand can sometimes outpace refinery capacity. In the spring, refineries perform maintenance, which can place a pinch on the gasoline market. By the end of May, refineries are usually back to full capacity.
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When you pump $20 dollars into your tank, that money is broken up into little pieces that get distributed among several entities. Gas is just like any other consumer product: There's a supply chain and several groups who are responsible for setting the price of the product. The media can sometimes lead you to believe that the price of gas is based solely on the price of crude oil, but there are actually many factors that determine what you pay at the pump. No matter how expensive gas becomes, all of these entities have to get their slice of the pie.
Let's look at where your money goes when you pay for gas:
Crude oil - The biggest portion of the cost of gas -- as of February 2006, that's about 59 percent -- goes to the crude-oil suppliers. This is determined by the world's oil-exporting nations, particularly the Organization of the Petroleum Exporting Countries (OPEC), which you will learn more about in the next section. The amount of crude oil these countries produce determines the price of a barrel of oil. Crude-oil prices averaged around $37 per barrel (1 barrel = 42 gallons or 159.6 L) in 2004 (Source: U.S. DOE). And, after Hurricane Katrina, some prices were almost double that. For example, an Energy Information Administration Brochure reported that "the price of West Texas Intermediate (WTI) crude oil, which started the year at about $42 per barrel, reached $70 per barrel in early September."
Sometimes, gas prices go up even though there is plenty of crude oil on the market. It depends on what kind of oil it is. Oil can be classified as heavy or light, and as sweet or sour (no one actually tastes the oil, that's just what they call it). Light, sweet crude is easier and cheaper to refine, but supplies have been running low. There's plenty of heavy, sour crude available in the world, but refineries, particularly those in the U.S., have to undergo costly retooling to handle it.
Refining costs - The refining of crude oil makes up about 10 percent of the price of gasoline. To learn more about oil refining, read How Oil Refining Works.
Distribution and marketing - Crude oil is transported to refineries, and gasoline is shipped from the refineries to distribution points and then to gas stations. The price of transportation is passed along to the consumer. Marketing the brand of the oil company is also added into the cost of the gasoline you buy. Together, these two factors account for about 11 percent of the price of gasoline.
Taxes - Taxes, including federal and local, account for about 20 percent of the total price of gas in the United States. Federal excise taxes are 18.4 cents per gallon, and state excise taxes average 20 cents per gallon. There may also be some additional state sales taxes, as well as local and city taxes. In Europe, gas prices are far higher than in America because taxes on gas are much higher. For example, gas prices in England have risen as high as $6 per gallon, with 78 percent of that going to taxes.
Station markup - While it isn't represented in the diagram above, of course some of the actual money you spend at the pump does go to the service station. Service stations add on a few cents per gallon. There's no set standard for how much gas stations add on to the price. Some may add just a couple of cents, while others may add as much as a dime or more. However, some states have markup laws prohibiting stations from charging less than a certain percentage over invoice from the wholesaler. These laws are designed to protect small, individually-owned gas stations from being driven out of business by large chains who can afford to slash prices at select locations.
Gas prices also vary from state to state for several reasons. Taxes are probably the biggest factor in the different prices around the country. Additionally, competition among local gas stations can drive prices down. Distance from the oil refineries can also affect prices -- stations closer to the Gulf of Mexico, where many oil refineries are located, have lower gas prices due to lower transportation costs. There are also some regional factors that can affect prices.
World events, wars and weather can also raise prices. Anything that affects any part of the process, from the moment the oil is drilled, through refining and distribution to your car will result in a change in price. Military conflicts in parts of the world with lots of oil supplies can make it difficult for oil companies to drill and ship crude oil. Hurricanes have damaged offshore drilling platforms, coastal refineries and shipping ports that receive oil tankers. If a tanker itself is lost or damaged, or leaks its oil into the ocean, that will put a dent in the market as well.
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