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For eons, this has been a quiet, unremarkable place — thousands of square miles of flat land covered in shrubs and red dirt. The sun is withering, and the wind blows hard.
It is exactly those features that qualify this remote parcel of the Australian Outback for an imminent transformation. A consortium of energy companies led by BP plans to cover an expanse of land eight times as large as New York City with as many as 1,743 wind turbines, each nearly as tall as the Empire State Building, along with 10 million or so solar panels and more than 1,000 miles of access roads to connect them all.
But none of the 26 gigawatts of energy the site expects to produce, equivalent to one-third of what Australia’s grid currently requires, will go toward public use. Instead, it will be used to manufacture a novel kind of industrial fuel: green hydrogen.
This patch of desert, more than 100 miles from the nearest town, sits next to the biggest problem that green hydrogen could help solve: vast iron ore mines that are full of machines powered by immense amounts of dirty fossil fuels. Three of the world’s four biggest ore miners operate dozens of mines here.
Proponents hope green hydrogen will clean up not only mining but also other industries by replacing fossil fuel use in steelmaking, shipping, cement and elsewhere.
Green hydrogen is made by using renewable electricity to split water’s molecules. (Currently, most hydrogen is made by using natural gas, a fossil fuel.) The hydrogen is then burned to power vehicles or do other work. Because burning hydrogen emits only water vapor, green hydrogen avoids carbon dioxide emissions from beginning to end.
In the Pilbara region of Western Australia and in dozens of spots around the globe endowed with abundant wind and sun, investors see an opportunity to generate renewable electricity so cheaply that using it to make green hydrogen becomes economical. Even if only some of the projects come to fruition, vast stretches of land would be duly transformed.
The project is one example of a global gamble, worth hundreds of billions of dollars, being made by investors, including some of the most polluting industries in the world.
Last year, government subsidies sped up action in the European Union, India, Australia, the United States and elsewhere. The Inflation Reduction Act, the Biden administration’s landmark climate legislation, aims to drive the domestic cost of green hydrogen down to one-quarter of what it is now in less than a decade through tax incentives and $9.5 billion in grants.
“We are about to jump from the starting blocks,” said Anja-Isabel Dotzenrath, who once led Germany’s biggest renewable energy company and now runs BP’s gas and low-carbon operations. “I think hydrogen will grow even faster than wind and solar have.”
Not everyone sees it that way. Challenges loom on every level, from molecular to geopolitical.
Some energy experts say green hydrogen’s business rationale is mostly hype. Doubters accuse its champions of self-interest or even self-delusion. Others see hydrogen as diverting crucial investment away from surer emissions-reduction technologies, presenting a threat to climate action.
Still, if the rosiest projections hold, green hydrogen in heavy industry could reduce global carbon emissions by 5 per cent, if not two or three times that. In those scenarios, which are far from certain, hydrogen plays a crucial role in limiting global warming.
Fatih Birol, the Turkish economist who leads the International Energy Agency, said he seldom meets people who don’t find green hydrogen alluring, with its elegant elementality. His organisation forecasts that green hydrogen will fulfill 10 per cent of global energy needs by 2050.
He said the agency’s expectations were based on the fact that, if the world wants to limit warming to 1.5 degrees, “so much green hydrogen needs to be part of the game.”
A ‘Monstrous Challenge’
For green hydrogen to have a substantial climate impact, its most essential use will be in steelmaking, a sprawling industry that produces nearly one-tenth of global carbon dioxide emissions — more than all the world’s cars.
In climate lingo, steel emissions are “hard to abate.” Blast furnaces, freight trains, cargo ships and the gargantuan trucks used in mining require heavy fuels like coal and oil. Even if they could be electrified (and, as a practical matter, today many can’t be), they would strain grids enormously.
Day and night, 2-mile-long ore trains weighing more than 90 million pounds depart Christmas Creek for Port Hedland. From the port, an endless stream of cargo ships (once again, burning heavy fuel) sail for East Asia, where ore becomes steel in coal-burning mills.
Nearly 40 per cent of the world’s iron ore comes from the Pilbara. Wherever you are, when you look out at the world, some of what you see is likely born of materials mined in and around Christmas Creek.
It wouldn’t be an overstatement to call the mine’s owner, Andrew Forrest, the most bullish of hydrogen’s backers. When he said two years ago that he was going to rapidly switch the mining operations of his company, Fortescue Metals Group, to running fully on electric batteries, green hydrogen and green ammonia, a fuel derived from hydrogen, he was “met with mirth,” he said recently.
“Back then, there was a distinct, visible horizon of disbelief that the world could actually change,” said Forrest, who is also one of the richest people in the world. He’s adamant that there’s a market, even if others see folly.
Both Fortescue and BP envision themselves as vying for the lead in green hydrogen and have announced plans to invest hundreds of billions of dollars in projects across dozens of countries beyond Australia, from Oman to Mauritania to Brazil and the United States. Those would still account for only a smidgen of the hundreds of millions of tons the IEA and others say would be needed to create a market in which green hydrogen was cheap enough that steel and concrete makers were convinced to convert their operations.
Even though both companies are hugely profitable, Australia’s government has made hundreds of millions of dollars available to them through subsidies and land allocations over the past two years, mostly in Western Australia, which is six times the size of California but has only 2 million people.
“Diesel has had 120 years to become plentiful and affordable,” said Jim Herring, who oversees Fortescue’s green industry development. “We want to scale hydrogen up in a tenth of that time. It’s a monstrous challenge, honestly.”
The ‘Absolute Zero’ problem
To liquefy hydrogen for shipping, it must be chilled to negative 252.87 degrees Celsius, just shy of absolute zero, the theoretical temperature at which atoms are completely still. Hydrogen is also very flammable, making storage difficult.
They’re just two of many obstacles.
Saul Griffith, a prominent inventor in renewable energy who started his career at an Australian steel mill, doesn’t see a big role for green hydrogen. To replace fossil fuels, he said, “the electricity you use to make it would have to be ridiculously cheap. And if you have that, why use it to make hydrogen?”
He calls it “not a fuel that will save the world.” Better to spend the money, he and others argue, on reducing renewable electricity costs so that nearly everything can be electrified.
Forrest said sceptics simply lack scientific knowledge. Fortescue, he said, will mix hydrogen with carbon dioxide so it is similar enough in consistency to liquefied natural gas that it can be transported in the same tankers. “It’s is as simple as it sounds,” he said.
Forrest said he believed that by the decade’s end, he would save his shareholders at least $1 billion a year by converting mining operations to green hydrogen and that his company would ultimately produce hydrogen at dozens of sites worldwide. BP said it will be exporting large quantities of green hydrogen and ammonia by then, too.
The interest taken in hydrogen by oil and gas companies concerns some climate activists. While BP, for instance, has presented green hydrogen as part of its pivot toward cleaner energy, the company this year scaled back plans to phase down oil and gas production over the coming decades amid record industrywide profits.
Energy companies already produce most of the world’s hydrogen fuel but make it from natural gas, which is, of course, a fossil fuel. Some, including BP, stand to receive federal subsidies in the United States because the company plans to capture the carbon and store it rather than release it.
This is called “blue hydrogen,” and some critics consider it a loophole in the Biden legislation that incentivizes fossil fuel production.
Dotzenrath said opposing blue hydrogen amounted to letting the perfect be the enemy of the good. “That’s absolutely nonsense,” she said. “It’s ultimately all about the carbon intensity.”
But in Australia, at least, BP’s green hydrogen investments are pushing ahead.
One of the impediments to huge green hydrogen projects is the short supply of electrolyzers, the machines that use electricity to split water molecules apart, isolating the hydrogen.
One issue is that China, which produces most of the world’s solar panels, wind turbines and renewable energy tech, hasn’t embraced electrolyzer production. Analysts said there was a shrewd calculus to that: China is heavily invested in coal, and much of that is tied to steel and cement production.
“It’s still a question: Will China go all-in on hydrogen?” said Marina Domingues, a clean technology analyst at Rystad Energy.
Despite the challenges, dozens of countries are betting on green hydrogen. Last year, Spain, Portugal and France agreed to build an undersea hydrogen pipeline by 2030 that would eventually supply the rest of Europe. Japan, Taiwan and Singapore, which import nearly all their energy, have also said hydrogen will be key to becoming carbon-neutral economies.
And Fortescue, for its part, is going into the business of making electrolyzers. This month in Australia, it is opening its first factory, the world’s biggest.
This article originally appeared in The New York Times
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