GAO-04-96 Energy Markets: Effects of Mergers and Market Concentration in the U.S. Petroleum Industry
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United States General Accounting Office Report to the Ranking Minority Member, GAO Permanent Subcommittee on Investigations, Committee on Governmental Affairs, U.S. Senate May 2004 ENERGY MARKETS Effects of Mergers and Market Concentration in the U.S. Petroleum Industry a GAO-04-96 May 2004 ENERGY MARKETS Effects of Mergers and Market Highlights of GAO-04-96, a report to the Concentration in the U.S. Petroleum Ranking Minority Member, Permanent Subcommittee on Investigations, Industry Committee on Governmental Affairs, U.S. Senate Starting in the mid-1990s, the U.S. Over 2,600 mergers have occurred in the U.S. petroleum industry since the petroleum industry experienced a 1990s. The majority occurred later in the period, most frequently among wave of mergers, acquisitions, and firms involved in exploration and production. Industry officials cited various joint ventures, several of them reasons for the mergers, particularly the need for increased efficiency and between large oil companies that cost savings. Economic literature also suggests that firms sometimes merge had previously competed with each to enhance their ability to control prices. other. For example, as shown in the figure, Exxon, the largest U.S. oil company, acquired Mobil, the Market concentration has increased substantially in the industry, partly second largest, thus forming because of these mergers. Concentrated markets can enable firms to raise ExxonMobil. prices above competitive levels but can also lead to cost savings and lower prices. Evidence suggests mergers also have changed other factors that GAO was asked to examine the affect competition, such as the ability of new firms to enter the market. effects of the mergers on the U.S. petroleum industry since the 1990s. According to industry officials, two major changes have occurred in U.S. For this period, GAO examined (1) gasoline marketing related to these mergers. First, the availability of generic mergers in the U.S. petroleum gasoline, which is generally priced lower than branded gasoline, has industry and why they occurred, decreased substantially. Second, refiners now prefer to deal with large (2) the extent to which market distributors and retailers, which has motivated further consolidation in concentration (the distribution of market shares among competing distributor and retail markets. firms) and other aspects of market structure in the U.S. petroleum GAO’s econometric analyses indicate that mergers and increased market industry have changed as a result concentration generally led to higher wholesale gasoline prices in the United of mergers, (3) major changes that States from the mid-1990s through 2000. Six of the eight mergers GAO have occurred in U.S. gasoline modeled led to price increases, averaging about 1 cent to 2 cents per gallon. marketing, and (4) how mergers GAO found that increased market concentration, which reflects the and market concentration in the cumulative effects of mergers and other competitive factors, also led to U.S. petroleum industry have increased prices. For conventional gasoline, the predominant type used in affected U.S. gasoline prices at the the country, the change in wholesale price due to increased market wholesale level. Commenting on a concentration ranged from a decrease of about 1 cent per gallon to an draft of GAO’s report, FTC asserted that the models were flawed and increase of about 5 cents per gallon. For boutique fuels sold in the East the analyses unreliable. GAO used Coast and Gulf Coast regions, wholesale prices increased by about 1 cent per state-of-the-art econometric models gallon, while prices for boutique fuels sold in California increased by over 7 to examine the effects of mergers cents per gallon. and market concentration on wholesale gasoline prices. The Selected Recent Major Petroleum Mergers models used in GAO’s analyses were peer reviewed by independent experts. Thus, GAO believes its analyses are sound. www.gao.gov/cgi-bin/getrpt?GAO-04-96. To view the full product, including the scope and methodology, click on the link above. For more information, contact Jim Wells at (202) 512-3841 or [email protected]. Contents Letter 1 Executive Summary 2 Purpose 2 Background 3 Results in Brief 4 Principal Findings 7 Recommendations for Executive Action 11 Agency Comments and GAO’s Evaluation 11 Chapter 1 15 The Petroleum Industry Consists of Three Main Segments 15 Introduction Different Entities Have Historically Exerted Influence over the World Petroleum Market 21 FTC and DOJ Review Proposed Mergers to Preserve Market Competition 28 Objectives, Scope, and Methodology 30 Chapter 2 34 Mergers Occurred in All Three Segments, but Most Frequently in the All Segments of the Upstream 34 Petroleum Industry Several Reasons Were Cited for Mergers in the Petroleum Experienced Mergers Industry 40 for Several Reasons Chapter 3 44 Market Concentration Increased Mostly in the Downstream Mergers Contributed to Segment of the Petroleum Industry During the 1990s 44 Increases in Market Mergers Have Caused Changes in Other Aspects of Market Concentration and Structure, but the Extent of These Changes Is Not Easily Quantifiable 62 Other Changes in Market Structure Page i GAO-04-96 Effects of Petroleum Mergers Contents Chapter 4 69 The Availability of Unbranded Gasoline Decreased 69 Gasoline Marketing Refiners Prefer Dealing with Large Distributors and Retailers 76 Has Changed in Two Major Ways Chapter 5 79 Econometric Models Developed to Estimate the Effects of Mergers Mergers and Increased and Market Concentration on Wholesale Gasoline Prices 80 Market Concentration Mergers in the Second Half of the 1990s Mostly Led to Increases in Generally Led to Wholesale Gasoline Prices 82 Increased Market Concentration Generally Led to Higher Wholesale Higher Wholesale Gasoline Prices 89 Gasoline Prices in the Other Factors Also Resulted in Higher Wholesale Gasoline Prices 91 United States Our Findings Are Generally Consistent with Previous Studies’ Empirical Results 94 Agency Comments and Our Evaluation 98 Appendixes Appendix I: Companies, Agencies, and Organizations Contacted by GAO 99 Appendix II: Experts Who Reviewed GAO’s Econometric Models 102 Appendix III: Correlation Analysis of Mergers and Market Concentration in the U.S. Petroleum Industry 103 Wholesale Gasoline Market Concentration by State 103 Correlation Analysis of Mergers and Market Concentration 106 Appendix IV: Econometric Analyses of the Effects of Specific Mergers and Market Concentration on U.S. Wholesale Gasoline Prices 110 GAO’s Econometric Models of Wholesale Gasoline Prices Built on Previous Studies and Market Analysis 110 Data Sources and Sample Selection 118 Specification of Econometric Models and Estimation Methodology 122 Econometric Results 128 Our Econometric Methodology Had Some Limitations 140 Appendix V: Comments from the Federal Trade Commission’s Commissioners 153 Page ii GAO-04-96 Effects of Petroleum Mergers Contents GAO’s Comments 159 Appendix VI: Comments from the Federal Trade Commission’s Bureau of Economics Staff 171 GAO’s Comments 194 Appendix VII: GAO Contacts and Staff Acknowledgments 224 GAO Contacts 224 Acknowledgments 224 Bibliography 225 Tables Table 1: FTC/DOJ Horizontal Merger Guidelines on the General Standards for Evaluating Postmerger Market Concentration 46 Table 2: Selected Vertical Mergers in the Petroleum Industry Since the 1990s 63 Table 3: Types of Wholesale Prices Paid for Gasoline 71 Table 4: Selected Oil Industry Mergers Affecting Wholesale Gasoline Markets, 1994-2000 83 Table 5: Estimated Changes in Conventional Wholesale Gasoline Prices Associated with Individual Mergers (1994-2000) 85 Table 6: Estimated Changes in Reformulated Wholesale Gasoline Prices Associated with Individual Mergers (1995-2000) 87 Table 7: Estimated Changes in CARB Reformulated Wholesale Gasoline Prices Associated with Individual Mergers (1996-2000) 88 Table 8: Estimated Changes in Conventional Wholesale Gasoline Prices Associated with Increased Market Concentration (1994-2000) 90 Table 9: Estimated Changes in Boutique Fuels Wholesale Prices Associated with Increased Market Concentration (1995-2000) 91 Table 10: State-level HHI for Wholesale Gasoline (1994–2002) 104 Table 11: Correlation between the Average Transaction Value of Mergers and Market Concentration (HHI) for Petroleum Refining by PADD (1991-2000) 107 Table 12: Correlation between the Average Transaction Value of Mergers and Market Concentration (HHI) for Wholesale Gasoline (1994-2001) 108 Table 13: Expected Effects of Key Explanatory Variables on Wholesale Gasoline Prices 117 Page iii GAO-04-96 Effects of Petroleum Mergers Contents Table 14: Variables in Our Econometric Analysis of Wholesale Gasoline Prices 119 Table 15: Effects of Mergers on Conventional Wholesale Gasoline Prices (1994-2000) 132 Table 16: Effects of Mergers on Reformulated Wholesale Gasoline Prices (1995-2000) 133 Table 17: Effects of Mergers on CARB Wholesale Gasoline Prices (1996-2000) 134 Table 18: Effects of Market Concentration on Conventional Wholesale Gasoline Prices (1994-2000) 136 Table 19: Effects of Market Concentration on Wholesale Prices of Boutique Fuels (1995-2000) 137 Table 20: Selected Summary Statistics for Conventional Wholesale Gasoline Markets 140 Table 21: Econometric Estimates of Mergers’ Effects on Conventional Wholesale Gasoline Prices 143 Table 22: Econometric Estimates of Mergers’ Effects on Reformulated Wholesale Gasoline Prices 145 Table 23: Econometric Estimates of Mergers’ Effects on CARB Wholesale Gasoline Prices 146 Table