Microsoft and ArcelorMittal back MIT spinout trying to green the $1.6 trillion steel industry
Removing molten iron from a pilot scale facility at the Boston Metal facilities in Woburn, Mass.
Photo courtesy Boston Metal
The $1.6 trillion steel industry is the backbone of the modern world. It’s also a significant contributor to global warming, representing between 7% and 9% of global carbon dioxide emissions, according to the World Steel Association.
That’s why massive global businesses, including international steel giant ArcelorMittal and tech stalwart Microsoft, are investing in Boston Metal, a company that spun out of Massachusetts Institute of Technology and developed a new way of making clean steel.
“There is no economy, there is no infrastructure without steel,” Boston Metal CEO Tadeu Carneiro told CNBC in a video call on Wednesday. So when it comes to decarbonizing industry to fight climate change, “it’s a big piece of the puzzle. I don’t think this is obvious to everybody,” Carneiro said.
In 2013, MIT professors Donald Sadoway and Antoine Allanore published a paper in the journal Nature with lab results proving that it is possible to generate steel without releasing carbon dioxide emissions. The same year they launched a company, Boston Electrometallurgical Corp., to scale and commercialize that technology.
In 2017, Carneiro joined the company as a CEO. He is a veteran of 40 years career in the steel industry, mostly at Brazilian metals giant CBMM. In 2018, Boston Metal raised its first round of funding, $20 million, in a round led by Breakthrough Energy Ventures, the climate investing firm founded by Microsoft co-founder Bill Gates.
Gates has for years emphasized the need to think about decarbonizing the manufacturing sector. Transportation gets a whole lot of attention but is responsible for only 16% of global emissions, where manufacturing generates 31%, according to Gates’ book, “How to Avoid a Climate Disaster.”
“Whenever I hear an idea for what we can do to keep global warming in check — whether it’s over a conference table or a cheeseburger — I always ask this question: ‘What’s your plan for steel?'” Gates wrote on his own blog in 2019.
On Friday, Boston Metal announced it has raised $120 million Series C round, led by multinational steel giant ArcelorMittal, with funding from Microsoft’s Climate Innovation Fund as well.
With the funding, Boston Metal will ramp up production of green steel at its pilot facility on Woburn, Massachusetts, and support the construction of its Brazilian subsidiary, Boston Metal do Brasil, where the company will manufacture various metals. It plans to begin construction of a demonstration steel plant in 2024 and a commercial sized plant in 2026, Carneiro told CNBC.
The Boston Metal team.
Photo courtesy Boston Metal
The cost of carbon for ArcelorMittal
For ArcelorMittal, making steel without greenhouse gas emissions is not only a responsibility, but also a business necessity according to Irina Gorbounova, a vice president and the Head of XCarb Innovation Fund at ArcelorMittal.
“Our customers are asking for it, our investors expect us to transition and our employees — and our future workforce — want to work for a company that is part of the solution and not part of the world’s climate problem,” Gorbounova told CNBC.
“Increasingly, we are also seeing a cost of carbon,” Gorbounova told CNBC. In Europe, the Emissions Trading System, or ETS, already puts a price on carbon emissions, Gorbounova told CNBC.
“The EU has been at the forefront of climate policy, but it’s reasonable to expect other regions to follow. So, there is a business case for us to decarbonize as well,” Gorbounova told CNBC. “Zero or near-zero carbon emissions steel will become a reality. The only question is how quickly we can make that journey happen. If steel companies don’t decarbonize, they will not stand the test of time.”
Ironically, steel is a primary component ingredient in many of the technologies being constructed to decarbonize, such as wind toward and electric vehicles, Gorbounova said.
Microsoft does not build cars or make steel, but it is trying to meet its own aggressive climate goals, which include being carbon negative by 2030 and removing all of the company’s historic carbon emissions since the company was founded in 1975.
Boston Metal CEO Tadeu Carneiro worked in the steel industry for decades before coming on to lead the MIT spin out.
Photo courtesy Boston Metal
How does Boston Metal do it?
Traditionally, the first step in steel production is to combine iron ore or iron oxide, which is mined out of the ground, with coal in a very hot blast furnace. That process generates significant CO2 emissions.
Scrap recycling is also a key part of the global industry, accounting for 30% of steel production (70%in the United States), and has a “much smaller” carbon footprint, Carneiro said.
Boston Metal’s technology, Molten Oxide Electrolysis, passes electricity through the iron oxide mixed with what Carneiro calls a “soup of other oxides” to make iron and oxygen. Oxides are chemical compounds that contain at least one oxygen atom, and Boston’s process includes common oxides like alumina, silica, calcium and magnesium.
“There’s no carbon involved” in the process of making the iron from this method, Carneiro said.
That said, heating this soup to the required 1,600 degrees Celsius requires significant electrical energy — making one million tons of steel per year will require 500 megawatts of baseload clean electricity, or about half the electricity necessary to power a midsize city. “The availability of electricity will dictate how fast the process will be implemented,” Carneiro said.
The electricity has to be clean as well, or it defeats the entire purpose.
“We believe in the future, we will have abundant and reliable and green and cheap electricity in order to use this process and manufacture green steel,” Carniero said.
There are other processes being developed to make clean steel with hydrogen, but they require very pure iron oxide, and only about 4% of the iron ore that is commercialized is suitable, Carniero said.
Boston Metal will eventually license its technology to steel companies, not be a steel manufacturer itself.
“Every steelmaking company is in contact with us to understand our progress and when we will become commercial,” Carneiro told CNBC. “They all making pledges to be carbon-neutral by 2050. And they don’t really have a solution right now. So, they really need a solution for large scale, and our technology is the only one that can scale up to this billions of tons of capacity.”
Technology
Bitcoin just completed its fourth-ever ‘halving,’ here’s what investors need to watch now
The Bitcoin network on Friday evening completed its fourth “halving,” reducing the rewards earned by miners to 3.125 bitcoins from 6.25.
The price of bitcoin has been volatile ahead of the event, and fell about 4% this week to trade around $64,100, according to Coin Metrics.
Mechanically, the halving itself shouldn’t affect the price of bitcoin in the short term, but many investors are expecting big gains in the months ahead, based on the cryptocurrency’s performance after previous halvings. After the 2012, 2016 and 2020 halvings, the bitcoin price ran up about 93x, 30x and 8x, respectively, from its halving day price to its cycle top.
The event is a big test for mining companies, however.
“All else equal, the halving will cut industry revenues in half, triggering a wave of consolidation and business closures, while (hopefully) rationalizing the network hashrate and industry capex, which is ultimately good for the remaining operators,” JPMorgan analyst Reginald Smith said in a recent note to investors.
Hash rates are a measure of the computational power used to process transactions on the bitcoin network. The larger a miner’s hash rate, the greater of a revenue opportunity it has.
Mining stocks have been volatile in the days leading up to the event. Many are down by double digits for the year, after rallying between about 300% and 600% in 2023. Riot Platforms, for instance, is down about 41% in 2024 through Friday’s close, but it surged 356% in 2023.
“The market so far has seen bitcoin mining stocks as mere BTC proxies, in absence of bitcoin ETFs,” said Bernstein analyst Gautam Chhugani. “[The] halving would further differentiate the low cost, high-scale consolidating winners vs. rest of smaller miners which may be disadvantaged post-halving.”
Mining stocks in 2023 and 2024
| 2024 YTD | 2023 return | |
|---|---|---|
| MARATHON DIGITAL (MARA) | -30.2% | 586.84% |
| RIOT PLATFORMS (RIOT) | -41.08% | 356.34% |
| CLEANSPARK (CLSK) | 54.4% | 440.69% |
| IRIS ENERGY (IREN) | -31.68% | 472% |
| CIPHER MINING (CIFR) | -7.63% | 637.50% |
Still, speculators may still trade on the event. Another JPMorgan analyst, Nikolaos Panigirtzoglou, said Thursday that he expects the near-term bitcoin price to fall after the halving, citing overbought conditions and prices that are still above the cryptocurrency’s comparison to gold when adjusted for volatility. He also pointed to subdued venture capital funding of crypto projects.
Analysts at Deutsche Bank have a similar view.
“[The] Bitcoin halving is already partially priced in by the market and we do not expect prices to increase significantly following the halving event,” the firm’s Marion Laboure said in a note Thursday, adding that it “has been widely anticipated in advance due to the nature of the Bitcoin algorithm.”
“Looking ahead, we continue to expect prices to stay high,” she added, citing expectations of future spot Ethereum ETF approvals, future central bank rate cuts and regulatory developments.
Bitcoin is currently trading at just under $64,000, roughly 13% off its March 14 all-time high of $73,797.68.
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