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Testimony: 

Before the Joint Economic Committee United States Congress: 

United States Government Accountability Office: 

GAO: 

For Release on Delivery Expected at 9:30 a.m. EDT: 

Wednesday, May 23, 2007: 

Energy Markets: 

Mergers and Other Factors That Influence Gasoline Prices: 

Statement of Thomas McCool, Director: 
Applied Research and Methods: 

GAO-07-894T: 

GAO Highlights: 

Highlights of GAO-07-894T, a report to the Joint Economic Committee of 
the United States Congress 

Why GAO Did This Study: 

Few issues generate more attention and anxiety among American consumers 
than the price of gasoline. The most current upsurge in prices is no 
exception. According to data from the Energy Information Administration 
(EIA), the average retail price of regular unleaded gasoline in the 
United States has increased almost every week this year since January 
29th and reached an all-time high of $3.21 the week of May 21st. Over 
this time period, the price has increase $1.05 per gallon and added 
about $23 billion to consumers’ total gasoline bill, or about $167 for 
each passenger car in the United States. 

Given the importance of gasoline for the nation’s economy, it is 
essential to understand the market for gasoline and the factors that 
influence gasoline prices. In this context, this testimony addresses 
the following questions: (1) what key factors affect the prices of 
gasoline and (2) what effects have mergers had on market concentration 
and wholesale gasoline prices? 

To address these questions, GAO relied on previous reports, including a 
2004 GAO report on mergers in the U.S. petroleum industry, a 2005 GAO 
primer on gasoline prices and a 2006 testimony. GAO also collected 
updated data from EIA. This work was performed in accordance with 
generally accepted government auditing standards. 

What GAO Found: 

The price of crude oil is a major determinant of gasoline prices. 
However, a number of other factors also affect gasoline prices 
including (1) increasing demand for gasoline; (2) refinery capacity in 
the United States that has not expanded at the same pace as the demand 
for gasoline; (3) a declining trend in gasoline inventories and (4) 
regulatory factors, such as national air quality standards, that have 
induced some states to switch to special gasoline blends. 

Petroleum industry consolidation plays a role in determining gasoline 
prices too. The 1990s saw a wave of merger activity in which over 2600 
mergers occurred in all segments of the U.S. petroleum industry. This 
wave of mergers contributed to increased market concentration in U.S. 
refining and marketing segments. Econometric modeling GAO performed on 
eight of these mergers showed that, after controlling for other factors 
including crude oil prices, the majority resulted in higher wholesale 
gasoline prices—generally between 1 and 7 cents per gallon. While these 
price increases seem small, they are not trivial—according to FTC’s 
standards for merger review in the petroleum industry, a 1-cent 
increase is considered to be significant. Additional mergers occurring 
since 2000 are expected to increase the level of industry concentration 
further, and because GAO has not yet performed modeling on these 
mergers, we cannot comment on any potential price effects at this time. 
We are currently studying the effects of the mergers that have occurred 
since 2000 as a follow up to our previous work on mergers in the 1990s. 
Also, we are working on a separate study on issues related to petroleum 
inventories, refining, and fuel prices. 

Figure: Selected Oil Industry mergers: 

[See PDF for Image] 

Source: GAO. 

[End of section] 

[Hyperlink, http://www.gao.gov/cgi-bin/getrpt?GAO-07-894T]. 

To view the full product, including the scope and methodology, click on 
the link above. For more information, contact Tom McCool at (202) 512-
2642 or mccoolt@gao.gov. 

[End of section] 

Mr. Chairman and Members of the Committee: 

We are pleased to participate in the Joint Economic Committee's hearing 
to discuss the factors that influence the price of gasoline, including 
oil industry mergers. Few issues generate more attention and anxiety 
among American consumers than the price of gasoline. Periods of price 
increases are accompanied by high levels of media attention and 
consumers questioning the causes of higher prices. The most current 
upsurge in prices is no exception. Anybody who has filled up lately has 
felt the pinch of rising gasoline prices. Over the last few years, our 
nation has seen a significant run up in the prices that consumers pay 
for gasoline. According to data from the Energy Information 
Administration (EIA), the average retail price of regular unleaded 
gasoline in the United States reached $3.21 per gallon the week of May 
21, 2007, breaking the previous record of $3.06 in September of 2005 
following Hurricane Katrina. This year, from January 29th to the 
present, gasoline prices have increased almost every week, and during 
this time the average U.S. price for regular unleaded gasoline jumped 
$1.05 per gallon, adding about $23 billion to consumers' total gasoline 
bill, or about $167 for each passenger car in the United States. 
Spending billions more on gasoline constrains consumers' budgets, 
leaving less money available for other purchases. 

However, for the average person understanding the complex interactions 
of the oil industry, consumers and the government can be daunting. For 
example, gasoline prices are affected by the decisions of the industry 
regarding refining capacity and utilization, gasoline inventories, as 
well as changes in industry structure such as consolidations; by 
consumers' decisions regarding the kinds of automobiles they purchase; 
and by government's regulatory standards. These are some of the key 
factors affecting gasoline prices that we will discuss today. 

Given the importance of gasoline for our economy, it is essential to 
understand the market for gasoline and what factors influence the 
prices that consumers pay. You expressed particular interest in the 
role consolidation in the U.S. petroleum industry may have played. In 
this context, this testimony addresses the following questions: (1) 
what key factors affect the prices of gasoline? (2) What effects have 
mergers had on market concentration and wholesale gasoline prices? 

To address these questions, we relied on information developed for a 
previous GAO report on mergers in the U.S. petroleum industry, the GAO 
primer on gasoline markets, and a previous testimony on gasoline prices 
and other aspects of the petroleum industry.[Footnote 1] We also 
reviewed reports and other documents by the Federal Trade Commission 
(FTC) on the U.S. petroleum industry.[Footnote 2] In addition, we 
obtained updated data from EIA. This work was performed in accordance 
with generally accepted government auditing standards. 

In summary, we make the following observations: 

* The price of crude oil is a major determinant of gasoline prices. A 
number of other factors also affect gasoline prices including (1) 
increasing demand for gasoline; (2) refinery capacity in the United 
States that has not expanded at the same pace as demand for gasoline in 
recent years, which coupled with high refinery capacity utilization 
rates, reduces refiners' ability to sufficiently respond to supply 
disruptions; (3) gasoline inventories maintained by refiners or 
marketers of gasoline that have seen a general downward trend in recent 
years; and (4) regulatory factors, such as national air quality 
standards, that have induced some states to switch to special gasoline 
blends that have been linked to higher gasoline prices. Finally, 
consolidation in the petroleum industry plays a role in determining 
gasoline prices. For example, mergers raise concerns about potential 
anticompetitive effects because mergers could result in greater market 
power for the merged companies, potentially allowing them to increase 
and sustain prices above competitive levels; on the other hand, these 
mergers could lead to efficiency effects enabling the merged companies 
to lower prices. 

* The 1990s saw a wave of merger activity in which over 2,600 mergers 
occurred in all segments of the U.S. petroleum industry. Almost 85 
percent of the mergers occurred in the upstream segment (exploration 
and production), while the downstream segment (refining and marketing 
of petroleum) accounted for 13 percent, and the midstream 
(transportation) accounted for about 2 percent. This wave of mergers 
contributed to increases in market concentration in the refining and 
marketing segments of the U.S. petroleum industry. Anecdotal evidence 
suggests that mergers may also have affected other factors that impact 
competition, such as vertical integration and barriers to entry. 
Econometric modeling we performed of eight mergers involving major 
integrated oil companies that occurred in the 1990s showed that, after 
controlling for other factors including crude oil prices, the majority 
resulted in wholesale gasoline price increases--generally between about 
1 and 7 cents per gallon. While these price increases seem small, they 
are not trivial because according to FTC's standards for merger review 
in the petroleum industry, a 1-cent increase is considered to be 
significant. Additional mergers since 2000 are expected to increase the 
level of industry concentration. However, because we have not performed 
modeling on these mergers, we cannot comment on any potential effect on 
gasoline prices at this time. 

Crude Oil Prices and Other Factors Affect Gasoline Prices: 

Crude oil prices are a major determinant of gasoline prices. As figure 
1 shows, crude oil and gasoline prices have generally followed a 
similar path over the past three decades and have risen considerably 
over the past few years. 

Figure 1: Gasoline and Crude Oil Prices--1976-2006 (Not adjusted for 
inflation): 

[See PDF for image] 

Source: GAO analysis of EIA data. 

[End of figure] 

Also, as is the case for most goods and services, changes in the demand 
for gasoline relative to changes in supply affect the price that 
consumers pay. In other words, if the demand for gasoline increases 
faster than the ability to supply it, the price of gasoline will most 
likely increase. In 2006, the United States consumed an average of 387 
million gallons of gasoline per day. This consumption is 59 percent 
more than the 1970 average per day consumption of 243 million gallons-
-an average increase of about 1.6 percent per year for the last 36 
years. As we have shown in a previous GAO report, most of the increased 
U.S. gasoline consumption over the last two decades has been due to 
consumer preference for larger, less-fuel efficient vehicles such as 
vans, pickups, and SUVs, which have become a growing part of the 
automotive fleet.[Footnote 3] 

Refining capacity and utilization rates also play a role in determining 
gasoline prices. Refinery capacity in the United States has not 
expanded at the same pace as demand for gasoline and other petroleum 
products in recent years. U.S. refineries have been running at very 
high rates of utilization averaging 92 percent since the 1990s, 
compared to about an average of 78 percent in the 1980s.[Footnote 4] 
Figure 2 shows that since 1970 utilization has been approaching the 
limits of U.S. refining capacity. Although the average capacity of 
existing refineries has increased, refiners have limited ability to 
increase production as demand increases. While the lack of spare 
refinery capacity may contribute to higher refinery margins, it also 
increases the vulnerability of gasoline markets to short-term supply 
disruptions that could result in price spikes for consumers at the 
pump. Although imported gasoline could mitigate short-term disruptions 
in domestic supply, the fact that imported gasoline comes from farther 
away than domestic supply means that when supply disruptions occur in 
the United States it might take longer to get replacement gasoline than 
if we had spare refining capacity in the United States. This could mean 
that gasoline prices remain high until the imported supplies can reach 
the market. 

Figure 2: U.S. Refinery Capacity and Capacity Utilization, 1970 to 
2005: 

[See PDF for image] 

Source: GAO analysis of EIA data. 

[End of figure] 

Further, gasoline inventories maintained by refiners or marketers of 
gasoline can also have an impact on prices. As have a number of other 
industries, the petroleum industry has adopted so-called "just-in-time" 
delivery processes to reduce costs leading to a downward trend in the 
level of gasoline inventories in the United States. For example, in the 
early 1980s U.S. oil companies held stocks of gasoline of about 40 days 
of average U.S. consumption, while in 2006 these stocks had decreased 
to 23 days of consumption. While lower costs of holding inventories may 
reduce gasoline prices, lower levels of inventories may also cause 
prices to be more volatile because when a supply disruption occurs, 
there are fewer stocks of readily available gasoline to draw from, 
putting upward pressure on prices. 

Regulatory factors play a role as well. For example, in order to meet 
national air quality standards under the Clean Air Act, as amended, 
many states have adopted the use of special gasoline blends--so-called 
"boutique fuels." As we reported in a recent study, there is a general 
consensus that higher costs associated with supplying special gasoline 
blends contribute to higher gasoline prices, either because of more 
frequent or more severe supply disruptions, or because higher costs are 
likely passed on, at least in part, to consumers. Furthermore, changes 
in regulatory standards generally make it difficult for firms to 
arbitrage across markets because gasoline produced according to one set 
of specifications may not meet another area's specifications. 

Finally, market consolidation in the U.S. petroleum industry through 
mergers can influence the prices of gasoline. Mergers raise concerns 
about potential anticompetitive effects because mergers could result in 
greater market power for the merged companies, either through 
unilateral actions of the merged companies or coordinated interaction 
with other companies, potentially allowing them to increase and 
maintain prices above competitive levels.[Footnote 5] On the other 
hand, mergers could also yield cost savings and efficiency gains, which 
could be passed on to consumers through lower prices. Ultimately, the 
impact depends on whether the market power or the efficiency effects 
dominate. 

Mergers in the 1990s Increased Market Concentration and Led to Small 
But Significant Increases in Wholesale Gasoline Prices; However the 
Impact of More Recent Mergers is Unknown: 

During the 1990s, the U.S. petroleum industry experienced a wave of 
mergers, acquisitions, and joint ventures, several of them between 
large oil companies that had previously competed with each other for 
the sale of petroleum products.[Footnote 6] More than 2,600 merger 
transactions occurred from 1991to 2000 involving all segments of the 
U.S. petroleum industry. These mergers contributed to increases in 
market concentration in the refining and marketing segments of the U.S. 
petroleum industry. Econometric modeling we performed of eight mergers 
involving major integrated oil companies that occurred in the 1990s 
showed that the majority resulted in small but significant increases in 
wholesale gasoline prices. The effects of some of the mergers were 
inconclusive, especially for boutique fuels sold in the East Coast and 
Gulf Coast regions and in California. While we have not performed 
modeling on mergers that occurred since 2000, and thus cannot comment 
on any potential effect on wholesale gasoline prices at this time, 
these mergers would further increase market concentration nationwide 
since there are now fewer oil companies. 

Some of the mergers involved large partially or fully vertically 
integrated companies that previously competed with each other. For 
example, as shown in figure 3, in 1998 British Petroleum (BP) and Amoco 
merged to form BPAmoco, which later merged with ARCO, and in 1999 
Exxon, the largest U.S. oil company merged with Mobil, the second 
largest. Since 2000, we found that at least 8 large mergers have 
occurred. Some of these mergers have involved major integrated oil 
companies, such as the Chevron-Texaco merger, announced in 2000, to 
form ChevronTexaco, which went on to acquire Unocal in 2005. In 
addition, Phillips and Tosco announced a merger in 2001 and the 
resulting company, Phillips, then merged with Conoco to become 
ConocoPhillips. To illustrate the extent of consolidations in the U.S. 
oil industry, figure 3 shows that there were 12 integrated and 9 non- 
integrated oil companies, but these companies have dwindled to only 8. 

Figure 3: Selected Mergers in the U.S. Petroleum Industry, 1996-
2006[Footnote 7a-e]: 

[See PDF for image] 

Source: GAO. 

[End of figure] 

Independent oil companies have also been involved in mergers. For 
example, Devon Energy and Ocean Energy, two independent oil producers, 
announced a merger in 2003 to become the largest independent oil and 
gas producer in the United States at that time. Petroleum industry 
officials and experts we contacted cited several reasons for the 
industry's wave of mergers since the 1990s, including increasing 
growth, diversifying assets, and reducing costs. Economic literature 
indicates that enhancing market power is also sometimes a motive for 
mergers, which could reduce competition and lead to higher prices. 
Ultimately, these reasons mostly relate to companies' desire to 
maximize profits or stock values. 

Proposed mergers in all industries are generally reviewed by federal 
antitrust authorities--including the Federal Trade Commission (FTC) and 
the Department of Justice (DOJ)--to assess the potential impact on 
market competition and consumer prices. According to FTC officials, FTC 
generally reviews proposed mergers involving the petroleum industry 
because of the agency's expertise in that industry. To help determine 
the potential effect of a merger on market competition, FTC evaluates, 
among other factors, how the merger would change the level of market 
concentration. Conceptually, when market concentration is higher, the 
market is less competitive and it is more likely that firms can exert 
control over prices. 

DOJ and FTC have jointly issued guidelines to measure market 
concentration. The scale is divided into three separate categories: 
unconcentrated, moderately concentrated, and highly concentrated. The 
index of market concentration in refining increased all over the 
country during the 1990s, and changed from moderately to highly 
concentrated on the East Coast. In wholesale gasoline markets, market 
concentration increased throughout the United States between 1994 and 
2002. Specifically, 46 states and the District of Columbia had 
moderately or highly concentrated markets by 2002, compared to 27 in 
1994. 

Evidence from various sources indicates that, in addition to increasing 
market concentration, mergers also contributed to changes in other 
aspects of market structure in the U.S. petroleum industry that affect 
competition--specifically, vertical integration and barriers to entry. 
However, we could not quantify the extent of these changes because of a 
lack of relevant data and lack of consensus on how to appropriately 
measure them. 

Vertical integration can conceptually have both pro-and anticompetitive 
effects. Based on anecdotal evidence and economic analyses by some 
industry experts, we determined that a number of mergers that have 
occurred since the 1990s have led to greater vertical integration in 
the U.S. petroleum industry, especially in the refining and marketing 
segment. For example, we identified eight mergers that occurred between 
1995 and 2001 that might have enhanced the degree of vertical 
integration, particularly in the downstream segment. Furthermore, 
mergers involving integrated companies are likely to result in 
increased vertical integration because FTC review, which is based on 
horizontal merger guidelines, does not focus on vertical integration. 

Concerning barriers to entry, our interviews with petroleum industry 
officials and experts at the time we did our study provided evidence 
that mergers had some impact on the U.S. petroleum industry. Barriers 
to entry could have implications for market competition because 
companies that operate in concentrated industries with high barriers to 
entry are more likely to possess market power. Industry officials 
pointed out that large capital requirements and environmental 
regulations constitute barriers for potential new entrants into the 
U.S. refining business. For example, the officials indicated that a 
typical refinery could cost billions of dollars to build and that it 
may be difficult to obtain the necessary permits from the relevant 
state or local authorities. Furthermore, The FTC has recently indicated 
that barriers to entry in the form of high sunk costs and environmental 
regulations have become more formidable since the 1980s, as refineries 
have become more capital-intensive and the regulations more 
restrictive. According to FTC, no new refinery still in operation has 
been built in the U.S. since 1976. 

To estimate the effect of mergers on wholesale gasoline prices, we 
performed econometric modeling on eight mergers that occurred during 
the 1990s: Ultramar Diamond Shamrock (UDS)-Total, Tosco-Unocal, 
Marathon-Ashland, Shell-Texaco I (Equilon), Shell-Texaco II (Motiva), 
BP-Amoco, Exxon-Mobil, and Marathon Ashland Petroleum (MAP)-UDS. 

* For the seven mergers that we modeled for conventional gasoline, five 
led to increased prices, especially the MAP-UDS and Exxon-Mobil 
mergers, where the increases generally exceeded 2 cents per gallon, on 
average. 

* For the four mergers that we modeled for reformulated gasoline, two-
-Exxon-Mobil and Marathon-Ashland--led to increased prices of about 1 
cent per gallon, on average. In contrast, the Shell-Texaco II (Motiva) 
merger led to price decreases of less than one-half cent per gallon, on 
average, for branded gasoline only.[Footnote 7] 

* For the two mergers--Tosco-Unocal and Shell-Texaco I (Equilon)--that 
we modeled for gasoline used in California, known as California Air 
Resources Board (CARB) gasoline, only the Tosco-Unocal merger led to 
price increases. The increases were for branded gasoline only and were 
about 7 cents per gallon, on average. 

Our analysis shows that wholesale gasoline prices were also affected by 
other factors included in the econometric models, including gasoline 
inventories relative to demand, supply disruptions in some parts of the 
Midwest and the West Coast, and refinery capacity utilization rates. 

Concluding Observations: 

Our past work has shown that, the price of crude oil is a major 
determinant of gasoline prices along with changes in demand for 
gasoline. Limited refinery capacity and the lack of spare capacity due 
to high refinery capacity utilization rates, decreasing gasoline 
inventory levels and the high cost and changes in regulatory standards 
also play important roles. In addition, merger activity can influence 
gasoline prices. During the 1990s, mergers decreased the number of oil 
companies and refiners and our findings suggest that these changes in 
the state of competition in the industry caused wholesale prices to 
rise. The impact of more recent mergers is unknown. While we have not 
performed modeling on mergers that occurred since 2000, and thus cannot 
comment on any potential effect on wholesale gasoline prices at this 
time, these mergers would further increase market concentration 
nationwide since there are now fewer oil companies. 

We are currently in the process of studying the effects of the mergers 
that have occurred since 2000 on gasoline prices as a follow up to our 
previous report on mergers in the 1990s. Also, we are working on a 
separate study on issues related to petroleum inventories, refining, 
and fuel prices. With these and other related work, we will continue to 
provide Congress the information needed to make informed decisions on 
gasoline prices that will have far-reaching effects on our economy and 
our way of life. 

Our analysis of mergers during the 1990s differs from the approach 
taken by the FTC in reviewing potential mergers because our analysis 
was retrospective in nature--looking at actual prices and estimating 
the impacts of individual mergers on those prices--while FTC's review 
of mergers takes place necessarily before the mergers, which is 
prospective. Going forward, we believe that, in light of our findings, 
both prospective and retrospective analyses of the effects of mergers 
on gasoline prices are necessary to ensure that consumers are protected 
from anticompetitive forces. In addition, we welcome this hearing as an 
opportunity for continuing public scrutiny and discourse on this and 
the other issues that we have raised here today. We encourage future 
independent analysis by the FTC or other parties, and see value in 
oversight of the regulatory agencies in carrying out their 
responsibilities. 

Mr. Chairman, this completes my prepared statement. I would be happy to 
respond to any questions you or the other Members of the Committee may 
have at this time. 

GAO Contacts and Staff Acknowledgments: 

For further information about this testimony, please contact me at 
(202) 512-2642 (mccoolt@gao.gov) or Mark Gaffigan at (202) 512-3841 
(gaffiganm@gao.gov). Godwin Agbara, John Karikari, Robert Marek, and 
Mark Metcalfe made key contributions to this testimony. 

FOOTNOTES 

[1] GAO, Energy Markets: Effects of Mergers and Market Concentration in 
the U.S. Petroleum Industry, GAO-04-96 (Washington, D.C.: May 17, 
2004); GAO, Motor Fuels: Understanding the Factors That Influence the 
Retail Price of Gasoline, GAO-05-525SP (Washington, D.C.: May 2005); 
GAO, Energy Markets: Factors Contributing to Higher Gasoline Prices, 
GAO-06-412T (Washington D.C.: February 1, 2006). 

[2] See, for example, FTC, The Petroleum Industry: Mergers, Structural 
Change, and Antitrust Enforcement, An FTC Staff Study, August 2004. 

[3] GAO, Motor Fuels: Understanding the Factors That Influence the 
Retail Price of Gasoline, GAO-05-525SP, (Washington, D.C.: May 2005). 

[4] The ratio of input to capacity measures the rate of utilization. 

[5] Federal Trade Commission and Department of Justice have defined 
market power for a seller as the ability profitably to maintain prices 
above competitive levels for a significant period of time. 

[6] We refer to all of these transactions as mergers. 

[7] a. Marathon and Ashland formed a joint venture called Marathon 
Ashland Petroleum that was primarily owned by Marathon Oil (62 
percent), which was a wholly owned affiliate of USX Corporation at the 
time the joint venture was created. Ashland sold its 38 percent 
ownership of the joint venture to Marathon on June 30, 2005. 
b. Equilon Enterprises was a 56/44 venture between Shell Oil and 
Texaco, respectively, that sold motor gasoline and petroleum products 
under both the Shell Texaco brand names. Although not depicted in the 
graphic, Motiva Enterprises was a joint venture between Star Enterprise 
and Shell Oil that sold gasoline and petroleum products under both the 
Shell and Texaco brand names. Motiva is now a 50/50 joint venture 
between Saudi Refining and Shell Oil after Texaco sold its ownership to 
its partners as a precondition of the U.S. Federal Trade Commission 
approving the merger of Chevron and Texaco. 
c. El Paso Corporation sold its 16,700-barrels-per-day Chickasaw, 
Alabama refinery to Trigeant EP Ltd, in August 2003. El Paso’s 
remaining refineries were sold to publicly traded companies at the 
times indicated (Sun Company on 01/04 and Valero on 03/04). 
d. Clark Refining divested its marketing operations (including the 
“Clark” brandname) and renamed itself Premcor in July 1999. 
e. Williams Companies sold its Memphis, Tennessee 180,000-barrels-per-
day refinery to Premcor in March 2003.

[8] Unbranded (generic) gasoline is generally priced lower than branded 
gasoline, which is marketed under the refiner's trademark.

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