The Atlanta Journal-Constitution
Steelmakers seek ways to curb climate impact
One tries hydrogen to make steel, uses bacteria to tackle carbon dioxide.
Few materials are more essential than steel, yet steel mills are among the leading polluters. They burn coke, a derivative of coal, and belch millions of tons of greenhouse gases. Roughly 2 tons of carbon dioxide rises into the atmosphere for every ton of steel made using blast furnaces.
With climate concerns growing, a crunch appears inevitable for these companies. Carbon taxes are rising, and investors are wary of putting their money into businesses that could be regulated out of existence.
None of this has been lost on the giant steelmaker ArcelorMittal.
For a half-century, Lakshmi Mittal devoted himself to building and running what became the world’s largest empire of huge steel mills, employing nearly 170,000 people.
Now his son, Aditya Mittal, 44, who recently succeeded his father as chief executive, says the industry that has made the family’s name and fortune needs to change its polluting ways.
“The largest challenge the world
is going to face over the next 30 years is how we decarbonize,” he said.
The company is spending about $390 million on pilot programs that include making steel with hydrogen and using bacteria to turn carbon dioxide into useful chemicals. The amount is less than 1% of the company’s 2020 revenue. But Mittal, who had been ArcelorMittal’s chief financial officer, said the company had greater technical resources and global scale than most rivals and was well positioned to lead the cleanup.
“We can now imagine that it is possible to make steel without carbon emissions,” he said.
But the future costs of converting a string of blast furnaces into climate-friendly operations are likely to run into tens of billions in Europe alone, the company says.
In recent years, the oil and gas industry has come under pressure from governments embracing increasingly ambitious climate goals. One result is greatly expanded investments in renewable energy. Now many see the regulatory focus turning to the steel industry and other heavy polluters.
Iron and steel are the source of an estimated 7% of global carbon dioxide emissions. Though the metal will be needed for the foreseeable future in many products, including electric vehicles and wind turbines, the process of producing steel is now viewed as a potential red flag for investors, even customers.
The task is tall at ArcelorMittal.
“They have a lot of things to improve,” said Gerrit Ledderhof, a responsible-investment manager at Aegon, a Dutch investment manager. “Big facilities in Belgium, France, all over the place.”
Aegon is nudging ArcelorMittal to clean up on behalf of a group of large investors called Climate Action 100+, and its representatives hope Mittal may accelerate change.
“I think he has the openness,” Heike Cosse, who leads Aegon’s dialogue with ArcelorMittal, said of the new chief executive.
ArcelorMittal has plants all over the world, but the environmental pressures are particularly acute in Europe, where it makes about half its steel. The company’s headquarters are in Luxembourg, and Ursula von der Leyen, who became the European Commission president in 2019, is increasing efforts to tighten up on pollution.
It is expected that the penalties for emissions under Europe’s carbon-trading program and other measures will rise rapidly in the coming years, cutting into steelmakers’ already slim profits.
“Everyone expects the regulations to be imposed to be very strict,” said Akio Ito, a senior partner at the consultants Roland Berger in Munich.
Ito said that in a few years, the carbon tariff might increase to as much as 150 euros per ton of steel, around 20% of the current price of a ton of the metal. If so, it could become too costly to make steel in Europe, he said.
In 2019, ArcelorMittal’s global operations made 90 million metric tons of steel, about 5% of the world total, while producing 185 million metric tons of carbon dioxide emissions.
Mittal is moving cautiously, trying several approaches. The company’s flagship mill near Ghent in Belgium is central to this effort. In one of several experiments, workers are erecting large tanks where bacteria will feast on carbon dioxide from plant exhaust and turn it into ethanol, which can then be used in making chemicals. At another plant, in Hamburg, Germany, the staff has run laboratory tests using hydrogen, which is gaining favor as a clean fuel in place of coke. Mittal is also contemplating hooking up the company’s electric furnaces, which are cleaner than blast furnaces, to a source of renewable power to produce steel branded as low-carbon.
Executives indicate that using hydrogen may eventually be the best solution but is many years away. Hydrogen made without causing emissions is expensive and limited.
“Today, this is impossible because there is no hydrogen,” said Geert Van Poelvoorde, CEO of ArcelorMittal Europe.
ArcelorMittal says up to 40 billion euros of investment will be needed over the next three decades to remove the emissions from steelmaking in Europe alone, depending on the methods.