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Price of Diesel, Which Powers the Economy, Is Still Climbing

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Russia’s invasion of Ukraine is one reason that the fuel is scarce. Another is a series of yearslong, intertwined events that cover the globe.HOUSTON — Gasoline prices have dropped as much as a dollar a gallon since early summer, easing a financial strain on many people. But the price of diesel, the fuel that moves trucks, trains, barges, tractors and construction equipment, has remained stubbornly high, helping to prop up the prices of many goods and services.On Wednesday, a gallon of diesel fuel in the United States cost $5.357 on average, according to AAA. That was down from a record of $5.816 in June but well above the $3.642 it cost a year ago. (A gallon of regular gasoline now averages $3.805.)The surge in diesel costs has not garnered the attention from politicians and the public that the jump in gasoline prices did, because most of the cars in the United States run on gas. But diesel prices are a critical source of pain for the economy because they affect the cost of practically every product.“The economic impact is insidious because everything moves across the country powered by diesel,” said Tom Kloza, the global head of energy analysis at the Oil Price Information Service. “It’s an inflation accelerant, and the consumer ultimately has to pay for it.”Sherri Garner Brumbaugh, the president of Garner Trucking in Findlay, Ohio, said the weekly cost of fueling one of her heavy-duty trucks in September was $1,300, more than double the $600 she paid two years earlier. “A good portion gets passed onto my customers with a fuel surcharge,” she said.Both gasoline and diesel prices are tied to the price of oil, which is set on the global market. The price of each fuel immediately shot up after Russia invaded Ukraine in February. But their paths have diverged sharply. Over the last year, the cost of diesel has ballooned by over 40 percent, compared with 11 percent for gasoline.Diesel prices are high because the fuel is scarce worldwide, including in the United States, which in recent years became a net exporter of oil and petroleum products. Oil analysts said there were simply not enough refineries to meet the demand for diesel, especially after Russia’s energy exports fell when the United States, Britain and some other countries stopped buying them.Diesel inventories are always a bit low in the spring and fall, during agricultural planting and harvesting seasons, but this fall supplies are at their lowest level since 1982, when the government began reporting data on the fuel.The tightest market is in the Northeast, where oil refineries have closed in recent years and where the diesel crunch is complicated by winter demand for heating oil. The two fuels are virtually the same but are taxed differently. An especially cold winter could make the situation worse by increasing the demand for heating oil.In Massachusetts, for example, diesel is selling for more than $5.90 a gallon (about $2.33 more than it did a year earlier). In Texas, it costs $4.73 a gallon.Trucks, trains, barges, tractors and construction equipment all use diesel, and its price affects the cost of practically every product.Jim Watson/Agence France-Presse — Getty ImagesWhile Russia’s war in Ukraine sent diesel prices soaring, the current situation is partly the result of an interconnected, slow-building series of events that extends across the globe. Some analysts trace the roots of the U.S. diesel shortage to a fire at Philadelphia Energy Solutions in 2019, which forced the refinery to shut down, taking out one of the Northeast’s important diesel producers.But refineries have been closing elsewhere. Over the last several years, 5 percent of U.S. refinery capacity, and 6 percent of European refinery capacity, has been shut down. A few refineries closed or scaled back because of the collapse in energy demand in the early months of the coronavirus pandemic. Some older refineries were shut down because they were inefficient and their profits weren’t large enough for Wall Street investors. Other refineries were closed so that their owners could convert them to produce biofuels, which are made from plants, waste and other organic material.“Because we shut those refineries down, we don’t have enough capacity,” said Sarah Emerson, the president of ESAI Energy, a consulting firm.As much of the global economy recovered in 2021 and 2022, demand for diesel climbed quickly. But then, after Russia invaded Ukraine, the Biden administration banned Russian oil and petroleum imports, which amounted to 700,000 barrels of diesel and other fuels a day, much of it intended for the Northeast.Diesel prices have also soared so much higher than the cost of gasoline in part because of a decision by the International Maritime Organization several years ago to require most oceangoing ships to replace their high-sulfur bunker fuel with less polluting fuels starting in 2020. That has slowly increased demand for diesel over the last two years.“A substantial amount of diesel is needed in the new bunker blends, and that is a hidden demand for diesel molecules,” said Richard Joswick, the head of global oil analysis for S&P Global Platts. He estimated that the global shipping fleet was now consuming half a million barrels of diesel a day, or roughly 2 percent of the world’s supplies.At the same time, while American refiners are now making tidy profits, 30 percent of their production is being exported. Latin America has become a particularly profitable market, as American diesel replaces fuel from Venezuela, where the state-controlled oil sector has been hobbled by corruption, mismanagement and U.S. sanctions. Some American diesel also goes to Europe.The impact of exports on domestic prices has led some analysts to speculate that the Biden administration could eventually restrict exports to boost supplies at home. But energy experts said that might not have the desired effect because diesel had become a globally traded commodity. Denying Latin America fuel could also backfire because many countries in the region sell crude oil to the United States.“We have a symbiotic relationship with Latin America on diesel and crude,” said Ms. Emerson of ESAI Energy. “We can disrupt that, but it doesn’t immediately fix the problem.”The global diesel shortage was also exacerbated by labor strikes at French refineries this fall. And utilities in Europe have been stockpiling diesel in case they cannot find enough natural gas to fuel their power plants.Russian diesel has continued to flow to Europe since the war began, but stricter sanctions that the European Union plans to impose on Russia in February could potentially cause havoc to the diesel business of traders, banks, insurance companies and shippers.Still, some energy experts said prices could soon begin to ease.Help may be on the way from an unlikely source: China. In recent months, China has been loosening export controls on diesel. Its exports rose from 200,000 barrels a day in August to 430,000 barrels a day in September, and the country has the capacity to sell even more, according to estimates by ESAI Energy.Nearly a third of Chinese diesel exports went to the Netherlands in recent months, taking some pressure off the European market. And oil refineries being built in Kuwait and China could come online as early as next year, further increasing supply.Demand for diesel and its price could also fall if much of the world slides into a recession next year, as some economists and policymakers are expecting.“A deep recession would certainly cut into diesel demand,” said Mr. Joswick of S&P Global Platts. “We don’t forecast a recession, but that is certainly a possibility.” More

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    How a Looming Oil Ban Could Devastate a Small Italian City

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    Like thousands of Sicilians who live near Priolo Gargallo, part of an industrial petrochemical hub on this island’s southeastern coast, Davide Mauro has tied his livelihood to the giant Russian-owned Lukoil refinery — a landscape of towering chimney stacks, steel cranes and flat-topped gas tanks that rise above the Ionian Sea’s brilliant turquoise waters.Ever since the European Union agreed to ban most imports of crude oil from Russia because of its invasion of Ukraine, the future of this refinery — the largest in Italy — has been thrown into doubt. The deadline for the embargo is less than three months away, but workers still have no idea whether they will have jobs once it goes into effect on Dec. 5.“The company never says anything official,” said Mr. Mauro, a shift operator who has worked for 20 years at a plant that supplies the oil refinery with power. There has been talk of the Italian government’s possibly nationalizing the facility or guaranteeing new lines of credit. Most recently, there has been talk of an interested American buyer. But Mr. Mauro said: “It’s all rumors. Nothing’s clear.”The uncertainty hanging over the Lukoil refinery is a potent example of how the hard-won unified opposition to Russia’s invasion of Ukraine is rippling, sometimes in unintended ways, through Europe, straining local economies and fanning political tensions.Davide Mauro, a shift worker at the ISAB Lukoil refinery, at his home in Siracusa. He fears losing his job after Europe’s embargo on Russian oil goes into effect.Gianni Cipriano for The New York TimesSoaring fuel and food prices have eroded living standards. European leaders have already warned that rationing, factory closures and blackouts may be coming this winter. But in places like the Siracusa province of Sicily, the economic sanctions against Russia — previously Europe’s largest supplier of energy — carry a particular sting.Areas bearing a disproportionate share of the economic burden can be found all over the continent: in Schwedt, Germany, where an oil refinery also depends on Russian crude; in Arques, France, where an energy-hungry glass factory can’t afford to keep the furnaces running; and in Tertre, Belgium, where high natural gas prices have compelled the fertilizer company Yara to shutter its operation.If the Lukoil site in Priolo closes, Mr. Mauro said, he will probably have to leave this place, where he was born. The unemployment rate in Sicily is nearly 19 percent — one of the highest in the European Union. Finding a well-paying job like the one Mr. Mauro has with Lukoil would be next to impossible.“It’s a nightmare,” he said. “My entire life is here.”Lukoil, the largest private corporation in Russia, was not singled out by sanctions by any country when the Ukraine war started in February. Still, many banks and other financial institutions decided to avoid doing business with Russian companies after the European Union imposed sanctions. And so Lukoil lost lines of credit, which it had used to finance purchases of crude from suppliers outside Russia.Before the war, the Priolo refinery, known as ISAB after its former owner, got roughly 40 to 50 percent of its oil from Russia. Now with those other sources off limits, its only alternative was to get all of its crude from Lukoil.Oil tankers at the ISAB Lukoil oil terminal. Before the war in Ukraine, the Priolo refinery got roughly 40 to 50 percent of its oil from Russia.Gianni Cipriano for The New York TimesA Lukoil gas station in Priolo. Although Lukoil is not under sanctions, lenders have stopped providing financing after the European Union imposed sanctions on Moscow for its invasion of Ukraine.Gianni Cipriano for The New York TimesBut when the European Union’s oil embargo kicks in, no Russian oil will be allowed in. Without a financial rescue plan that would allow it to buy non-Russian oil, the plant faces closure and job cuts.“The impact on the community will be devastating,” Giuseppe Gianni, the mayor of Priolo, said from his office, lighting a small cigar. Above his desk hung a gold crucifix and an enormous painting of a Madonna and Child under a fig tree. Outside the window is a small pastel-colored playground with a view of the refinery as a backdrop.Mr. Gianni acknowledged that the petrochemical complex had been linked to toxic air, water pollution and cancer, which he said needed to be resolved, but he maintained that closing the refinery would blight the area’s economy.The refinery, which processes more than a fifth of Italy’s crude oil in addition to exports to other countries, employs about 1,000 workers directly. Two thousand more are contractors working on maintenance and mechanical projects. Another 7,500 in the area — from truck drivers to seamen — would be affected by the widespread layoffs.Several other energy and petrochemical companies including Sasol, Sonatrach and Versalis are in the area, and representatives have said that because the plants produce and buy products from one another and share contractors and supply chains, their economic futures are linked.Giuseppe Gianni, the mayor of Priolo, said closing the Priolo refinery would blight the local economy.Gianni Cipriano for The New York TimesWorkers for ISAB taking a bus home after their shift in Priolo.Gianni Cipriano for The New York Times“The effect would be destabilizing for the whole industrial area,” said Carmelo Rapisarda, the head of the industrial sector of the C.G.I.L. trade union in Siracusa, adding that the 35-kilometer industrial hub accounts for half the province’s economy.The looming oil embargo has forced the region to suddenly confront a long-simmering crisis. The European Union’s decision to transition away from fossil fuels to renewable energy sources means that the life span of the ISAB refinery and two others on Sicily’s coast is limited.“The situation was already critical regardless of the war,” Mr. Rapisarda said.Last year, Confindustria Siracusa, the area’s industrial association, proposed a $3 billion conversion plan to develop new clean facilities that could reduce carbon emissions and produce hydrogen. But both the Italian government and the European Union have been reluctant to spend money to help the oil industry transition.Aside from the economic fallout on the region, the refinery is important to Italy’s energy security, said Simone Tagliapietra, a senior fellow at Bruegel, a research group in Brussels. “They cannot let the refinery close down” right away, he said. It is needed “to ensure the provision of oil products, mainly to southern Italy” during the transition.The political situation is complicating the search for a quick solution. Mario Draghi’s national unity government fell in July, and he is in a caretaker role until elections on Sunday. Giorgia Meloni, the hard-right leader of Brothers of Italy, is leading in the polls.Once a vocal admirer of President Vladimir V. Putin of Russia, Ms. Meloni has recently said she supports following the European Union sanctions and sending weapons to Ukraine.Whoever wins the election will inherit the fallout from the oil embargo. But in the meantime, the situation is becoming urgent. To meet the Dec. 5 deadline of ending seaborne imports, the plant would have to start preparing for a shutdown in November and halt deliveries. Various figures, including the outgoing ecological minister, have mentioned the possibility of nationalizing the refinery. In Germany, the government last week took control of three refineries owned by the Russian oil company Rosneft.But Claudio Geraci, vice president of Confindustria Siracusa, dismissed the idea of nationalization as absurd. Mr. Geraci, who is deputy general manager for human resources and external relations at ISAB in Sicily, emphasized that he was speaking solely in his capacity as vice president of the industrial association. “As ISAB’s manager, there is no comment,” he said. In response to queries, press representatives at Lukoil’s headquarters in Moscow declined to comment.Carmelo Rapisarda, a C.G.I.L. union representative, said closing the refinery “would be destabilizing for the whole industrial area.”Gianni Cipriano for The New York TimesA Lukoil gas station near the ISAB Lukoil refinery in Priolo.Gianni Cipriano for The New York TimesMr. Geraci said “the only possibility” was for the government to guarantee a line of credit so that the company could buy crude from non-Russian sources. But he added that “from Confindustria’s point of view, the situation is difficult,” because the Italian government does not want to be seen as helping a Russian company.Local political leaders said there had been interest from potential outside investors. According to union officials, representatives from Crossbridge Energy Partners, a New York-based company that converts traditional energy infrastructure, had recently visited the plant. Crossbridge said it had no comment.Any meaningful and sustainable conversion plan would need significant public investment, said Lucrezia Reichlin, the founder and president of the Ortygia Foundation, a nonprofit devoted to promoting development in southern Italy and located about five miles south of Priolo.Given the region’s important industrial tradition, such an approach makes sense, Ms. Reichlin said. But with the political uncertainty, she added, “I doubt that we’ll have a government that is ambitious enough to look at this situation with a long-term view toward the energy transition.”Ms. Reichlin, who is also an economics professor at the London Business School, said the Italian government was likely to fall back on a familiar and expensive stopgap measure: public assistance for employees who lose their jobs.For now, it seems that workers like Mr. Mauro, politicians like Mayor Gianni and industrial leaders like Mr. Geraci are operating on a wing and a prayer, inveighing against the inaction, while hoping for a last-minute miracle.“It’s like the bank that is too big to fail,” Mr. Mauro said of the refinery and his hope for a bailout. But the precise solution is still murky. “It’s a typical Italian situation,” he added. “I’m sure we will know what happens only at the last moment.”The Bar La Conchiglia, a cafe frequented by refinery workers in Priolo.Gianni Cipriano for The New York Times More

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    Soaring Cost of Diesel Ripples Through the Global Economy

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    Farmers are spending more to keep tractors and combines running. Shipping and trucking companies are passing higher costs to retailers, which are beginning to pass them on to shoppers. And local governments are paying hundreds of thousands of dollars extra to fill up school buses. Construction costs could soon rise, too.The source is the sudden surge in the price of diesel, which is quietly undercutting the American and global economies by pushing up inflation and pressuring supply chains from manufacturing to retail. It is one more cost of the war in Ukraine. Russia is a major exporter of both diesel and the crude oil that diesel is made from in refineries.Car owners in the United States have been shocked by gasoline prices of more than $4 a gallon, but there has been an even bigger increase in the price of diesel, which plays a critical role in the global economy because it powers so many different kinds of vehicles and equipment. A gallon of diesel is selling for an average of $5.19 in the United States, according to government figures, up from $3.61 in January. In Germany, the retail price has shot up to 2.15 euros a liter, or $9.10 a gallon, from €1.66 at the end of February, according to ADAC, the country’s version of AAA.Fueling stations in Argentina have begun rationing diesel, jeopardizing one of the world’s leading agricultural economies, and energy analysts warn that the same could soon happen in Europe, where some businesses report spending twice as much on diesel as they did a year ago.“Not only is it a historic level, but it’s increased at a historic pace,” said Mac Pinkerton, president of North American surface transportation for C.H. Robinson, which provides supply chain services to trucking companies and other customers. “We have never experienced anything like this before.”The sharp jump is putting immense pressure on trucking firms, especially smaller operations that are already suffering from driver shortages and scarce spare parts. Many can pass increased fuel costs on to their customers only after a few weeks or months.Eventually consumers will feel the effect in higher prices for all manner of goods. While hard to quantify, inflation will be most visible for big-ticket items like automobiles or home appliances, economists say.“Really, everything that we buy online or in a store is on a truck at some point,” said Bob Costello, the chief economist for American Trucking Associations.Trucks lining up on Terminal Island between the Port of Long Beach and the Port of Los Angeles.Alex Welsh for The New York TimesManufacturers are also heavy users of diesel, leading to higher prices for factory goods. Food will go up in price because farm equipment generally runs on diesel.“It’s not just the fuel we put into pickups, tractors, combines,” said Chris Edgington, an Iowa corn farmer. “It’s a cost of transporting those goods to the farm, it’s a cost of transporting them away.”At the start of the pandemic, diesel prices dropped steeply as the global economy slowed, factories shut down and stores closed. But beginning in early 2021 there was a sharp rebound as truck and rail traffic resumed. Prices, which increased pretty steadily last year, picked up momentum in January as Russia massed troops near Ukraine and then invaded. Low stockpiles of the fuel, particularly in Europe, have added to the price pressures.“Diesel is the most sensitive, the most cyclical product in the oil industry,” said Hendrik Mahlkow, a researcher at the Kiel Institute for the World Economy in Germany who has studied commodity prices. “Rising prices will distribute through the whole value chain.”Refineries, which turn crude oil into fuels that can be used in cars and trucks, have tried to play catch-up on both sides of the Atlantic in recent months. But they have not been able to make more diesel, gasoline and jet fuel fast enough. That is in part because refineries have closed in Europe and North America in recent years and more of the world’s fuels are being refined in Asia and the Middle East.Since January 2019, refinery capacity has declined 5 percent in the United States and 6 percent in Europe, according to Turner, Mason & Company, a consulting firm in Dallas.Europe is particularly vulnerable because it relies on Russia for as much as 10 percent of its diesel. Europe’s own diesel production is also dependent on Russia, which is a big supplier of crude oil to the continent. Some analysts say Europe may have to begin rationing diesel as early as next month unless the shortage eases.Diesel prices and Germany’s dependence on Russian energy were among the factors that on Wednesday prompted Germany’s Council of Economic Experts to cut its forecast for growth in 2022 by more than half, to 1.8 percent.Russian diesel has been flowing to Europe since the invasion last month, but traders, banks, insurance companies and shippers are increasingly turning away from the country’s diesel, oil and other exports.Several large European oil companies have announced that they are leaving Russia. TotalEnergies, the French oil giant, said this month that it would stop buying Russian diesel and oil by the end of the year.The market for oil and diesel is global, and companies can usually find another source if their main supplier can’t deliver. But no oil company or country can quickly make up for the loss of Russian energy.Saudi Arabia, for example, has not increased diesel exports because one of its largest refineries is undergoing maintenance. The kingdom and its allies in OPEC Plus have also refused to ramp up crude oil production because they are happy to have oil prices stay high. Russia belongs to the group and has significant sway over its fellow members.Christine Hemmel is a manager of a trucking company in Ober-Ramstadt, Germany, that has been in her family for four generations. Her family’s business has almost all the challenges that medium-size haulers have faced since the pandemic’s outbreak.The Russia-Ukraine War and the Global EconomyCard 1 of 6Rising concerns. More

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    Mexico Is Buying a Texas Oil Refinery in a Quest for Energy Independence

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    President López Obrador wants to halt most oil exports and imports of gasoline and other fuels. Critics say he is reneging on Mexico’s climate change commitments.DEER PARK, Texas — Two giant murals, on storage tanks at an oil refinery here, depict the rebels led by Sam Houston who secured Texas’ independence from Mexico in the 1830s. This week those murals will become the property of the Mexican national oil company, which is acquiring full control of the refinery.The refinery purchase is part of President Andres Manuel López Obrador’s own bid for an independence of sorts. In an effort to achieve energy self-sufficiency, the president of Mexico is investing heavily in the state-owned oil company, placing a renewed emphasis on petroleum production and retreating from renewable energy even as some oil giants like BP and Royal Dutch Shell are investing more in that sector.Mr. López Obrador aims to eliminate most Mexican oil exports over the next two years so the country can process more of it domestically. He wants to replace the gasoline and diesel supplies the country currently buys from other refineries in the United States with fuel produced domestically or by the refinery in Deer Park, which would be made from crude oil it imports from Mexico. The shift would be an ambitious leap for Petroleos Mexicanos, the company commonly known as Pemex. The company’s oil production, comparable to Chevron’s in recent years, has been falling for more than a decade, and it shoulders more than $100 billion in debt, the largest of any oil company in the world.The decision to pay $596 million for a controlling interest in the Deer Park refinery, which sits on the Houston ship channel and would be the only major Pemex operation outside Mexico, is central to fulfilling Mr. López Obrador’s plans to rehabilitate the long-ailing oil sector and establishing eight productive refineries for Mexican use. Mexico also agreed to pay off $1.2 billion in debts that Pemex and Shell jointly owe as co-owners of the refinery, which is profitable.“It’s something historic,” Mr. López Obrador said last month. In a separate news conference last year, he said, “The most important thing is that in 2023 we will be self-sufficient in gasoline and diesel and there will be no increase in fuel prices.”While Mr. Lopez Obrador’s policies diverge from the rising global concern over climate change, they reflect a lasting temptation for leaders and lawmakers worldwide: replacing imported energy sources with domestically produced fuels. Further, the generally well-paying jobs the oil and other fossil fuel industries provide are politically popular across Latin America, Africa as well as industrialized countries like the United States.In the 1930s, the Mexican government took over Royal Dutch Shell’s operations south of the border as it nationalized the entire oil industry then dominated by foreigners. Now Mr. López Obrador is poised to go one step further, taking complete control of a big Shell oil refinery.The takeover is all the more pointed because it is happening in an industrial suburb that calls itself “the birthplace of Texas,” where rebels marched to the San Jacinto battlefield to defeat the Mexican Army — the event commemorated on the refinery murals. The battlefield is a five-mile drive from the refinery.It is hard to overestimate the connection between oil and politics in Mexico, where the day petroleum was nationalized, March 18, is a national holiday. Oil provides the Mexican government with a third of its revenues, and Pemex is one of the nation’s biggest employers, with about 120,000 workers. Mr. López Obrador hails from the oil-producing state of Tabasco, and the powerful Pemex labor union is a crucial part of his political base. He ran on a platform of rebuilding the company, and has raised its production budget, cut taxes it pays and reversed efforts by his predecessor to restructure its monopoly over oil production in the country.When he took office three years ago, Mr. López Obrador began undoing changes made in 2013 to the country’s Constitution intended to open the oil and gas industry to private and foreign investment. He is also pushing to reverse electricity reforms that his predecessor, Enrique Peña Nieto, put in place to increase the use of privately funded wind and solar farms and move away from state-run power plants fueled by oil and coal.Energy experts say Mexico is backtracking on a commitment it made a decade ago under President Felipe Calderón, to generate more than a third of its power from clean energy sources by 2024. Mexico now produces just over a quarter of its power from renewables.“They are going to heavier fuels rather than to lighter fuels,” said David Goldwyn, a top State Department energy official in the Obama administration. “Virtually every foreign company — Ford, Walmart, G.E., everybody who operates there — has their own net-zero target now. If they can’t get access to clean energy, Mexico becomes a liability.”Mr. López Obrador’s government has said it will combat climate change by investing in hydroelectric power and reforestation.Many of the Mexican president’s initiatives are being contested by opposition lawmakers and the business community. But Mr. López Obrador can do a lot on his own. He plans to spend $8 billion on a project to build an oil refinery in Tabasco state, and more than $3 billion more to modernize six refineries.President Andres Manuel López Obrador hails from the oil-producing state of Tabasco, and the powerful Pemex labor union is a crucial part of his political base.Gustavo Graf Maldonado/ReutersThe purchase of the Deer Park refinery is crucial to his plans because the Tabasco complex will not be completed until 2023 or 2024 and will not produce enough gasoline, diesel and other fuels to meet all of Mexico’s needs.Long a partner of Pemex, Shell, which operates the Deer Park refinery, is selling its stake in part to satisfy investors concerned about climate change who want the oil giant to invest more in renewable energy and hydrogen.Under Mexican ownership the refinery will continue its practice of using Mexican crude oil, but it will probably sell more of the gasoline and other fuels it produces to Mexico. In the future, some energy experts said, Pemex could also use the Deer Park refinery to process oil from other countries that also produce the kinds of heavy crude that Mexico does.“I think it’s a good deal and makes sense for Pemex,” said Tom Kloza, global head of energy analysis at Oil Price Information Service, who noted that Deer Park could perhaps process Venezuelan oil if the United States lifted sanctions against that country.The Mexican policy changes would have only a modest and temporary impact on American refineries, which can replace Mexican oil with crude from Colombia, Brazil, Saudi Arabia and Canada. Refiners could lose as much as a half-million barrels of transportation fuel sales a day to Mexico, but energy experts say refiners would be able to find other markets.Guy Hackwell, the general manager of the Deer Park complex, said, “Best practices will remain in place.” He said the “vast majority of the work force will report to the same job the day after the deal closes.”As for the murals, a Pemex spokeswoman, Jimena Alvarado, said, “We would never remove a historical mural.”Residents in Deer Park, in the heart of the Gulf of Mexico petrochemical complex, say they feel assured that locals will run the plant and Shell will continue to own an adjoining chemical plant. “The phone numbers will remain the same for who we contact in the event of an emergency and we will still have the same people and relationships, so I feel good about that,” Deer Park’s city manager, Jay Stokes, said.But some energy experts said Mr. López Obrador’s approach to energy, including the refinery purchase, would waste precious government resources that could be better used to reduce greenhouse gas emissions and local air pollution. There are also doubts that Mexico can build enough refining capacity to fulfill the president’s objectives.Shell, which operates the Deer Park refinery, is selling its stake in part to satisfy investors concerned about climate change who want the oil giant to invest more in renewable energy and hydrogen.Brandon Thibodeaux for The New York TimesJorge Piñon, a former president of Amoco Oil de Mexico, said Mexico most likely would not be able to immediately profit from slashing exports of crude and processing its own fuels since the refinery business typically has low profit margins, especially in Latin America.He said the Mexican refineries could not match American refineries in handling Mexico’s high-sulfur heavy crude. Mexican fuels made from heavy oil caused severe air pollution problems in many cities before the country began importing cleaner-burning American gasoline and diesel over the last 20 years.By exporting less oil, Mexico would also almost certainly use more of it for domestic power generation, potentially pushing out solar and wind generation and producing more air pollution and greenhouse gas emissions.“His nationalistic decisions will have a negative impact on climate change,” Mr. Piñon said. “He is marching back to the 1930s.”Mr. López Obrador is unapologetic. “Oil is the best business in the world,” he said at a news conference last May. More